#аббревиатуры  #авиационныйсправочник  #handbook  #aviationhandbook

Мы постоянно совершенствуем и добавляем новую информацию.



A : Aeroplane

A : Amber

A:  Prededing 4 digits Altimeter (Metar)

A : Ampere

A : At or Above (constrained altitude)

A : Autotuned NAVAID

A : Austria

A01: Automated Observation Without Precipitation Discriminator

A02: Automated Observation With Precipitation Discriminator

A SMGCS : Advanced Surface Movement Guidance and Control Systems

A/A : Air/Air

A/C, a/c : Aircraft

A/D : Analog-to-Digital

A/D Converter : Analogue-to Digital Converter

A/G : Air-Ground

A/I : Accident(s)/Incident(s)

A/l : Anti-ice

A/L : Auto Land

A/P : Autopilot

A/T : Autothrottle

AA : American

AA : Approved agency

AAA : Advanced ATC System Amsterdam

AAA : Asian Airliners Association

AAA : (or AAB, AAC...etc., in sequence) Amended meteorological message (message type designator)

AAATS : Australian Advanced Air Traffic Services

AAC : Alpha Attenuation Coefficient

AAC : Aeronautical Administration Communication (a class of communication which supports administrative communication)

AAC : Airline Administrative Communication

AACC : Airport Associations Co-ordinating Council

AACE : Airfield Approach Control Element

AACI : Airports Association Council International

AACO : Arab Air Carriers Organisation

AAD : Assigned Altitude Deviation

AAF : ATM Added Functions

AAFCE : Allied Air Forces Central Europe

AAFG : ATM Added Functionality Sub-Group

AAG : AIS Automation Group

AAGDI / AGADE : Automated Air/Ground Data Interchange

AAH : Autonomous Aircraft Hybrid

AAIB : Air Accident Investigation Branch (UK equivalent of NTSB)

AAIM : Aircraft Autonomous Integrity Monitoring

AAIS : Automated AIS

AAL : Above Aerodrome level

AALS : Advanced Approach and Landing System

AAM : Airbus Asset Management

AAM :  Airline Administration Message

AAME : Association of Aviation Medical Examiners

AAP : Advanced Automation Program

AAPA: Association of Asia Pacific Airlines

AAR : Airport Acceptance Rate or Airport Arrival Rate

AAR : Air-to-Air Refuelling

AAS : Advanced Automation System (the end systems for all FAA air traffic control, located at the ARTCCs

AASA : Air Lines Association of Southern Africa

AASC : Airport Authorities Steering Committee

AASI : Aeronautical Applications Service Interface

AASR : Airways and Airport Surveillance Radar

AAT : Alpha Attenuation Test

AATF : Airworthiness Assurance Task Force

AATMS : Advanced Air Traffic Management System

AATT : Advanced Aviation Transportation Technology

AAUI : Aeronautical Applications User Interface

AAWF: Auxiliary Aviation Weather Facility

AB : Action Button (mouse)

ABAS : Aircraft-based Augmentation System

ABC : ATC Bypass Complex

ABET : Airspace Behavioural Engineering Technology

ABFG : ATM Basic Functions Sub-Group

ABI : Advance Boundary Information

ABM : Abeam

ABN : Aerodrome Airport Beacon

ABPSK : Aviation Binary Phase Shift Keying

ABT : About

ABV : Above

AC : Air Canada

AC : Alternating Current

AC : Altocumulus

AC : Assessment Centre

AC : Assistant Controller

AC : Advisory Circular

ACA : Air Traffic Centre Architecture

ACA : Airport Co-ordinators Association

ACA : Airspace Control Activity

ACA : AUP / UUP Composition application (software)

ACA : Austrian Cockpit Association

ACAC : Arab Civil Aviation Council

Acad : Academic establishments

ACAD : Auto Computer Aided Design (Operator-Input + Display System)

ACAG : Airspace Co-ordination Agencies

ACAM : Airport Capacity Airside Modelling

ACAMS : Aircraft Condition Analysis and Management System

ACARS : Aircraft Communications, Addressing and Reporting System

ACARS ARINC communications and address reporting system (digital communications system used primarily for aircraft-to-airline messages)

ACARS MU ACARS Management Unit

ACAS : Airborne Collision Avoidance System

ACAS I : Aircraft Collision Avoidance System Version 1

ACAS II : Aircraft Collision Avoidance System Version 2

ACAS III : Aircraft Collision Avoidance System Version 3

ACASA : ACAS Analysis

ACATF : ATC Centre Communications Architecture Task Force

ACB : Aeroclub

ACC : Area Control Centre

ACC Controller : Area Controller

ACC Loop : Anticipation-Action-Comparison Loop

ACCA : Air Charters Carriers Association

ACCC : Australian Competition and Consumer Commission

ACCEL : Accelerate

ACCESS : Aircraft Control Console for Experiments and Simulations Studies

ACCID : Notification of an aircraft accident

ACC-PC : ACC Planning Controller

ACCS : Air Command and Control System

ACC-TC : ACC Tactical Controller

ACCUM : Accumulate

ACDAC : Asociacion Colombiana de Aviadores Civiles

ACDMD : Air Collaborative Decision Making Demonstrator

ACE : Allied Command Europe

ACE : Altimeter Control Equipment

ACE : ATC Communications Environment

ACF : Area Control Facility. See ACC or ARTC

ACFS : Advanced Concepts Flight Simulator (a generic "glass cockpit")

ACFT : Aircraft

ACG : Advanced ATS Concept Group

ACG : Advanced Concept Group

ACG : ATN/CNS Consultation Group

ACG : ATS System Concept Working Group

ACG : Austro Control GmbH

ACH : ATC Flight Plan Change Message

ACH : ATC Flight Plan Change

ACI : Airports Council International

ACI : Area of Common Interest

ACID : Aircraft Identification (ICAO)

ACIPLA : Asociacian Civil de Pilotos de Lineas Aereas (Uruquay)

ACK : Acknowledge(ment) message

ACL : Altimeter Check Location

ACL : ATC Clearances

ACM : Acceptance of (Radar) Co-ordination Message

ACM : Acceptable Means of Compliance

ACM : Airspace Control Measures

ACM : ATC Communication Management

ACMS : Aircraft Condition Monitoring System

ACN : Aircraft Classification Number

ACN : Airspace Co-ordination Notification

ACN : Austrian Communication Network

ACNZ : Airways Corporation of New Zealand

ACO : Airspace Co-ordination Order

ACOD : Area Conflict Detection

ACP : Accept Message

ACP : Acceptance Message

ACP : African, Caribbean and Pacific States

ACP : Aircraft Control Position (window)

ACP : Airspace Control Plan

ACP : Airspace Crossing Acceptance Message

ACP : Allied Communications Publication

ACP : Azimuth Change/Count Pulses

ACP : Area Control Procedural

ACPO : Aircraft Position Operator

ACPSC : Advisory Committee on Procurement and Sales Contracts (Eurocontrol/DF)

ACPT : Accept or Accepted

ACR : Air Carrier

ACR : Atlantic Co-ordinated Route

ACRPWG : Aircraft Crash Recovery Procedures Working Group

ACS : Advanced Communication System

ACS : Airspace Control System

ACS : Area Control Surveillance

ACSA : Allied Communications Security Agency

ACSE : Application Control Service Element

ACT : Active

ACT : Activation message designator

ACT : ATC Activation message

ACT/LAM : Activation Message / Logical Acknowledgement Message

ACTF : Aeronautical Charting Task Force

ACU : Airspace / Antenna Control Unit. See BSU

ACYC: Anticyclonic

AD : Administrative Domain (ENOC)

AD : Aerodrome

AD : Air Defence

AD : Airworthiness Directive

AD : CFMU/FDOD - Airspace Data Section

ADA : Advisory Area

ADAGES : Action Plan Definition on the Basis of Architecture studies from GAAS for EATMS

ADAP : Automated Downlink of Airborne Parameters

ADAPT : ATS Data Acquisition, Processing and Transfer Panel (ICAO)

ADC : Air Defence Centre / Command / Clearance

ADC : Air Data Computer

ADC : Analog to Digital Converter

ADCA : Air Defence Classification Area

ADCE : Aircraft Data Circuit-Terminating Equipment

ADCP : Air Defence Command Post

ADD : Architectural Design Document

ADD : Average Delay per Delayed Flight

ADDI : Automated Digital Data Interchange (ICAO)

ADDN : Addition or Additional

ADDR : Address

ADE : Air Defence Element

ADE : Autonomous Display Equipment

ADEG : ATS Data Exchange Group

ADEP : Aerodrome of Departure

ADES : Aerodrome of Destination

ADEXA : Air Defence Exercise Area

ADEXP : ATS Data Exchange Presentation (message format used for IFPS) ; ATS Data Exchange Program Format

ADF : Automatic Direction Finder

ADFL : Augmented Dynamic Flight Leg ADIRS : Air Data Inertial Reference System

ADGE : Air Defence Ground Environment

ADJ : Adjacent

ADI : Aerodrome Control Instrument

ADI : Attitude Director lndicator

ADI : Attitude Display Indicator

ADIDS : Advanced Data & Image Distribution System (CCTV Application)

ADIRS : Air Data Inertial Reference System

ADIRU : Air Data Inertial Reference Unit

ADIS : Automatic dependent surveillance and Data Link Interim System

ADIS : Automatic dependent surveillance and Data Link Interim System

ADIS (P) : Automated Data Interchange System (Panel) - ICAO

ADIZ : Air Defence Identification Zone

ADLP : Aircraft Data Link Processor (the Mode S subnetwork function onboard the aircraft that implements the OSI network layer protocols)

ADM : Administrative / Administration

ADM : Aeronautical Decision Making

ADM : Average Delay per Movement

ADM : Airborne Data Bus

ADM : Air Data Module

ADMA : Aviation Distributors and Manufacturers Association

ADMD : Airspace Data Management & Distribution

ADNC : Air Defence Notification Centre (GR)

ADNS : Aeronautical Radio Incorporated Data Network Service

ADOC : Air Defence Operations Centre

ADOLT : Air Defence Liaison Team

ADORA : Analysis and Definition of the Operational Requirements for ATM

ADP : Activity Predictor Display

ADP : ATFM Daily Plan

ADP : Automated Data Processing or Auxiliary Data Processing

ADPG : ATM Data Processing Sub-Group

ADR : Advisory Route

ADR : Air Data Reference

ADR : Airfield Damage Repair

ADR : Average Delay per Regulated Flight

ADREP : Accident/Incident Reporting System

ADRS : Air Defence Radar Site

ADS : Air Data System

ADS : Automatic Dependent Surveillance

ADS-A : Automatic Dependent Surveillance-Addressed

ADS-B : Automatic Dependent Surveillance-Broadcast

ADS-C : Automatic Dependent Surveillance-Contract

ADS-P : Automatic Dependent Surveillance-Panel (ICAO)

ADS-R : Automatic Dependent Surveillance-Report

ADSEL : Address Selective SSR System (UK)

ADSIA : Allied Data Systems Interoperability Agency

ADSP : ADS Processor

ADSP : Automatic Dependent Surveillance Panel (ICAO)


ADT : Air Data Tester

ADT : Approved Departure Time

ADTI : Additional Technical Information (ODS - ESCO)

ADUG : Airport Database User Group

ADV: Advise

ADV : Aerodrome Control Visual

ADVCTN : Advection

ADVON : Advanced Echelon

ADVY : Advisory

ADZ : Advise

ADZD : Advised

ADZY : Advisory

AE : ATM Engineering

AE : Application Entity

AE : United  Arab Emirates (ISO Country Code)

AEA : Association of European Airlines

AECB : Atomic Energy Control Board

AECG : ACAS Evaluation and Co-ordination Group

AFCS Automatic Flight Control System

AEEC : Airlines Electronic Engineering Committee

AEFMP : Algeria, Spain, France, Maroc, Portugal Project

AEGIS : Airborne Early Warning Ground Environment Integrated Segment

AEGIS : ATM European Group for Improvement of Scenarios

AEG-TFK : AEG-Telefunken

AEM : Airports & Environment Management (Eurocontrol)

AENA : Aeropuertos Españoles y Navegatión Aérea (ES) / Spanish Airport and Air navigation Administration

AERA : Automated En-Route Air Traffic Control

AEREA : Association of European Research Establishments in Aeronautics

AEROSAT : Aeronautical Satellite Council

AES : Aircraft / Airborne Earth Station (ICAO - ADS)

AES : ATC Engineering Section

AES : Automatic Enhanced Surveillance

AEV : Annual Equivalent Value

AEW : Airborne Early Warning

AEWPD : Adapted EATM Work Programme Document

AF : Air Force

AF : Air France (airline)

AF : Audio Frequency (VCS)

AF : DME Arc to a Fix (ARINC 424 Path Terminator)

AFA : Association of Flight Attendants

AFAS : Aircraft in the Future ATM System

AFAST : Active Final Approach Spacing Tool

AFB : Air Force Base

AFC : Airport Facilities Control (ICAO)

AFC : Area Forecast Center

AFC : ATC Frequency Change (service)

AFCAC : African Civil Aviation Commission

AFCNF : Air Force Central NOTAM Facility

AFCS : Automatic Flight Control System

AFD : Airport Facility Directory

AFD : Associated Flight Details

AFDK : After Dark

AFDS : Autopilot Flight Director System (also A/P F/D)

AFFSC (E) : Air Forces Flight Safety Committee (Europe)

AFG : Advisory Financial Group (ex-FCG/Eurocontrol)

AFI : Africa-Indian Ocean Region (ICAO)

AFIL : Air Filed Flight Plan

AFIS : Airport/Aerodrome Flight Information Service

AFISO : Aerodrome Flight information Service Officer

AFIZ : Aerodrome Flight information Zone

AFL : Actual Flight Level

AFL : Assigned Flight Level

AFM : Yes or Affirm or Affirmative or That is Correct

AFM : Airplane Flight Manual

AFMS : Advanced Flight Management System

AFMSG : Audit and Financial Matters Sub-Group

AFN : Air Traffic Services Facilities Notification

AFN: Airspace / Flow Management & Navigation Business Division (Eurocontrol)

AFP : Active Flight Plan Processing

AFP : Area Forecast Panel

AFP : ATC Flight Plan Proposal

AFPA : Automated Flight Plan to Track Association

AFPL : ADEXP Filed Flight Plan

AFRAA : African Airlines Association

AFS : Advanced Functional Simulator

AFS : Aeronautical Fixed Services

AFS : Automatic Flight System

AFSATCOM : Airborne Satellite Communication

AFSS : Automated Flight Service Station

AFT : After (time or place)

AFTN : Aeronautical Fixed Telecommunication Network

AFW : Area Flows Window

AFWA : Automatic Flight Weather Advisory

AGA : Aerodromes and Ground Aids

AGARD : Advisory Group on Aeronautical Research and Developments

AGAS : European Action Group for ATM Safety

AGATE :Advanced General Aviation Transport Experiments

AGC : Automatic Gain Control (VCS)

AGCS : Air-Ground Communication System

AGCSG : Air/Ground Communication Sub-Group Meeting

AGDC : Air/Ground Data Communications

AGDC-SG : Air/Ground Data Communications Sub Group. See AGSG

AGDC-TF : Air/Ground Data Communications-TF (ODT)

AGDL : Air-Ground Data Link

AGDLS : Air-Ground Data Link System

AGL : Above Ground Level

AGLAE : Air-Ground Data Link Applications Experimentation

AGN : Again

AGN : Agenda

AGOD : Advisory Group on Deliverables

AGR : Agreement

AGSG : Air / Ground Data Communication Sub group

AGVC-SG : Air/Ground Voice Communication Sub Group

AHDG : Assigned Heading

AHEAD : Automation and Harmonisation of European Aeronautical Data

AHGSO : Ad Hoc Group of Senior Officials

AHMI : Airborne Human Machine Interface

AHRS : Attitude and Heading Reference System

AHS : American Helicopter Association

AI : Artificial Intelligence

AI : Air India (airline)

AIA : Aerospace Industries Association

AIAA : American Institute of Aeronautics and Astronautics

AIAA : Area of Intense Aerial Activity

AIB : Aeronautical Information Bulletin (EAD)

AIC : Aeronautical Information Circular

AICB : Air Initiated Comm-B Protocol

AICG : Ab Initio Co-ordination Group

AICG : ACAS Implementation Co-ordination Group

AICG : Airport Interface Co-ordination Group

AICM : Aeronautical Information Conceptual Model (EAD)

AID : Aid or Aircraft Identification

AIDA : Aeronautical Information and Data handling Austria

AIDC : ATS Interfacility Data Communications (ICAO)

AIDS : Aircraft Integrated Data System

AIG : ACAS Implementation Group ; Automatic Input Generation

AIG : Accident Investigation and Prevention

AIL : Aeronautical Item Location Bank

AIM : Airman’s Information Manual

AIM : ATFM Information Message

AIM-FANS : Airbus Interoperable Modular FANS

AIMS : Airplane Information Management System (Boeing 777)

AIMS : Aircraft Integrated Monitoring (Information Management) System

AIP : Aeronautical Information Publication

AIPN : Appointing authority

AIR : Armament Initiative and Requirements

AIR 4653 : Aerospace Information Report 4653 - (Flight Management Systems Review)

AIR : Air Control

AIRAC : Aeronautical Information Regulation and Control

AIRCOM : Aircraft Communications

AIREP : Air-Report (ICAO)

AIRMET : Air Meteorological Information Report which may affect the safety of low-level aircraft operations

AIRPROX : The code word used in air traffic incident report to designate aircraft proximity (ICAO)

AIRS : Advanced Infrared Sounder

AIS : Aeronautical Information Services

AISAP : AIS Automation Specialist Panel

AISAS : Aeronautical Information Services Automated System

AISC : Aeronautical Mobile Communications System Panel

AISC : Aeronautical Industry Service Communication

AISG : AIS Automation Group

AISPOP : AIS Planning and Operations Subgroup

AISS : Aeronautical Information Server System

AIS-TF : AIS Training Task Force

AISU : Aeronautical Information Service Unit

AITSC : Administrative IT Steering Committee

AIXM : Aeronautical Information Exchange Model

AKARD : Available Knowledge And required system Research and Development

AL : Aircraft Label

AL : Albania (ISO Country Code)

AL : Alerting Service

AL : Allegheny

ALA : Alighting Area

ALB : Alternative Label

ALCC : Airlift Central Co-ordination Centre

ALCE : Airlift Control Element

ALCM : Air Launched Cruise Missile

ALD : Airlift Division

ALERFA : Alert Phase

Alert : Alert phase

Alert Indicator : (visual or auditory) which provides information to the flightcrew in a timely manner about an event requiring pilot awareness

ALF : Aloft

ALIM : Altitude Limit (Positive RA Altitude Threshold)

ALLA : Allied Long Lines Agency

ALMC : Airlift Movement Cell

ALO : Air Force Liaison Officer

ALPA : Air Line Pilots Association

ALQDS : All Quadrants

ALR : Alerting message

ALRS : Alerting Service

ALRT : Alert

ALS : Approach Lighting System

ALS : Architecture Layer Structure (ISO)

ALS : Automatic Line Switch (RMCDE)

ALS : Automatizovany Letisni System (CZ) / Automated Airport System

ALSEC : All Sectors

ALSF-2 : High Intensity Approach Lighting Systerm with Sequenced Flashing Lights

ALSTG : Altimeter Setting

ALT : Airborne Link Terminal

ALT : Altitude

ALT : Alternate

ALTM : Altimeter

ALTN : Alternate Aerodrome

ALTNLY : Alternately

ALT HOLD : Altitude Hold Mode

ALTRV : Altitude Reservation System

ALWF : Actual Wind Factor

AM : Aeromexico

AM : Airspace Management

AM : Amplitude Modulation

AM : Armenia (ISO Country Code)

AM : Arrival Manager

AM : Attribute Modification

AMA : Area Minimum Altitude

AMA : Airlift Management Agency

AMAN : Arrival Manager (APATSI)

AMC : Airspace Management Cell

AMC : ATC Microphone Check (service)

AMC : Avionics Maintenance Conference

AMC/CADF : Airspace Management Cell - ECAC Centralized Airspace Data Function

AMCP : Aeronautical Mobile Communication Panel (ICAO)

AMD : Administrative Management Domain

AMD : Advisory Map Display

AMD : Amend or Amended

AMD : Arrival manager Display

AMDP : Airspace Management Data Processing

AMDP-TF : EATCHIP Airspace Management Data Processing Task Force

AMDT : Amendment (ICAO)

AMDWP : Aeromedical Working Party

AME : ATM Message Exchange

AMEG : Air Miss Evaluation Group

AMGR : Airport Manager

AMHS : Aeronautical Message Handling Service

AMI : Airline Modifiable Information

AMI : Administrative and Management Information Software

AMID : Approach Multi-Input Device (ODID)

AMJ : Advisory Material Joint

AMLCD : Active Matrix Liquid Crystal Display

AML (WP) : Airfield Markings and Lighting (Working Party)

AMN : Airspace Management and Navigation (EATM Unit)

AMOC : ATFM Air Traffic Flow Management

AMOC : ATFM Modelling Capability

AMOS : Automatic Meteorological Observing System

AMOS : ARTAS Maintenance and Operational Support organization

AMOSS : Airline Maintenance and Operation Support System

AMPS : American Mobile Phone System

AMS : Aeronautical Mobile Service

AMS : Air Mass

AMS : Airspace Management Service

AMS : ATC Model-Simulations Studies

AMS(R)S : Aeronautical Mobile Satellite (Route) Service

AMSC : Allied Military Security Code

AMSL : Above Mean Sea Level

AMSS : Aeronautical Mobile Satellite Services

AMSS : Aeronautical Mobile Satellite System

AMSS : Automatic Message Switching System

AMSSP : Aeronautical Mobile Satellite Service Panel

AMT : ADS Mediterranean Trials

AMTI : Adaptive Moving Target Indicator

AN : Access Node (RMCDE)

ANA : Aeroportos e Navegaçao Aérea (PT)

ANA : All Nippon Airways

ANA-EP : Aeroportos e Navegaçao Aérea Empresa Pública (PT)

ANC : Access Network Computer

ANC : Air Navigation Commission / Conference (ICAO)

ANCAT : Abatement of Nuisances Caused by Air Transport (ECAC environmental policy committee (ENV : AL)

ANDRA : Advanced Node for Data Relay in ATN

ANDS : ANS Department

ANERC : Advanced New En-Route Centre (UK)

ANLYS : Analysis

ANM : ATFM Notification Message (CFMU / ECAC States)

ANOVA : Analysis of Variance

ANP : Actual Navigation Performance

ANP : Air Navigation Plan

ANPP : Air Navigation Plan Publication

ANS : Air Navigation Service

ANS : Answer

ANS/CR : Air Navigation Services of the Czech Republic

ANSA : International Advisory Group Air Navigation Services

ANSEP : Air Navigation Services Economics Panel (ICAO)

ANSI : American National Standards Institute

ANSIR : Advanced Navigation System Inertial Reference

ANSO : Air Navigation Services Offices (Irish aviation authority)

ANSP : Air Navigation Service Provider

ANT : Airspace and Navigation Team

AO : Aircraft Operator

AO : Airlines Operator

AO : Arrival Operations

AO : ATM Operations

AOA : Aircraft Operating Agency (e.g. Airlines)

AOA : Angle-of-Attack

AOA : Airport Operations Area

AOB : Air Order of Battle

AOB : Angle of Bank

AOC : Advanced Operational Capability

AOC : Aerodrome Obstruction/Obstacle Chart

AOC : Aeronautical Operational Communications

AOC : Aircraft Operating Company

AOC : Aircraft Operations Centre (ICAO)

AOC : Airline Operation Control

AOC Aeronautical Operation Control (communications which support safety and regularity of flight that normally take place between aircraft and the operator)

AOC : Assume of Control (ODID)

AOC : Auxiliary Output Chip

AOC : Aeronautical Operational Control

AOC : Air Operator's Certificate

AOC : Airline Operational Communications

AOCC : Aircraft Operator Control Centre

AOCI : Airport Operators Council International

AOCP : Airborne Operational Computer Programme

AOCS : Attitude and Orbit Control System

AOCU : Aircraft Operator Control Unit

AOF : AIS Office (EAD)

AOF : Allocation of Functions

AOG : Aircraft On Ground

AOI : Aircraft Operations Information

AOI : Area of Operational Interest

AOI : AIS Office

AOIS : Aeronautical Operational Information System

AOM : Aircraft Operations Manual

AOP : Aeronautical OSI Profile

AOPA : Aircraft Owner and Pilot Associations

AOPG : Aerodrome Operations Group (ICAO)

AOPTF : Aerodrome Operations Task Force

AOR : Area of Responsibility

AOR : Atlantic Ocean Region (ICAO)

AOR-E : Atlantic Ocean Region - East (ICAO)

AORTF : ATM Added Functionality Operational Requirements Task Force

AOR-W : Atlantic Ocean Region - West (ICAO)

AOS : Airport Operations Strategy Drafting Group

AOT : Airport Operations Team

AOU : Aircraft Operator Unit

AOWIR : Aircraft Operator What-If Re-routing

AOWP : Airport Operations Work Plan

AP : Airport

AP : Auto-Pilot

AP : Application Process

APA Allied Pilots Association

APANPIRG : Asia/Pacific Air Navigation Planning and Implementation Regional Group

APAPI : Abbreviated Precision Approach Path Indicator

APATSI : Airport / Air Traffic Systems Interface (ECAC)

APB : APATSI Project Board

APC : Aeronautical Passenger Communications /Correspondence

APC : Aeronautical Public Correspondence

APC : Assistant Planning Controller

APCH : Approach

APD : Activity Predictor Display

APDLC : Aircraft Proximity Data Link Communication (ICAO)

APDSG : ATM Procedures Development Sub-Group

APE : Analysis Programme for Evaluation

API : Application Programming Interface

APIS : Advanced Passenger Information system

APIRG : Africa-Indian Ocean Planning and Implementation Regional Group (ICAO)

APL : Abbreviated Flight Plan

APL : Applied Physics Laboratory

APL : ATC Flight Plan

APLGT : Airport Lighting

APM : Architecture Project Management

APMB : ACAS Programme Management Board

APMS Automated Performance Measurement System

APO : Airport Operator

APO : Aircraft Performance and Operations

APOD : Airport of Debarkation

APP : Approach Centre / Control (office/service)

APP controller/director : Approach controller/director

App. : Appendix

APPA-SG : ATFM Policies and Principles Advisory Sub- Group

APP-ASS : Approach-Assistant

APPR : Approach/Approach Mode

APR : Automatic Position Reporting

APRT : Airport

APRX : Approximate or Approximately

APS : Approach Control Surveillance

APSG : ACAS Programme Steering Group

APSG : After Passing

APT : Airport(s)

APT : Airspace Planning Team  became ANT (March 94)

APU : Auxiliary Power Unit

APV : Approve or Approved or Approval

APW : Area Proximity Warning

AQAP : Allied Quality Assurance Publication

AQG : Agency Quality Group

AQP : Advanced Qualification Programme

A-QPSK : Aviation Quadrature Phase Shift Keying

AR : Agency Representative (CIP)

AR : Air Route

AR : Automatic Reminder

AR : Argentina (ISO Country Code)

AR-1 : Approach Radar 1

ARAC : Aviation Rulemaking Advisory Committee

ARB : Authoritative Representative Body

ARC 2000 : Automatic Radar Control for the 21st Century (CEE)

ARC : Airlift Requirement Centre

arc : assigned rate of climb/descent

ARC : Advanced Research for/in Air Traffic Control

ARC (ARCH) : CFMU – Archive System

ARCC : Air Rescue Co-ordination Centre

ARCH : Archives and Quality Control System

ARCID : Aircraft Identification

ARCOS : Arrival Co-ordination System

ARCP : Air Refuelling Control Point

ARDEP : Analysis / Assessment of Research and Development in Eurocontrol Programmes

ARDRS : Automatic Radar Data Recording System

ARDS : ATM Architecture and overall system engineering

ARETA : ATM with RNAV in Extended Terminal Area

ARFA : Allied Radio Frequency Agency

ARFF : Airport Rescue and Fire Fighting

ARFOR : Area Forecast

ARH : Architecture

ARIBA : ATM system safety criticality Raised Issues in Balancing Actors Responsibility

ARINC : Aeronautical Radio Incorporated (a nonprofit corporation owned by member airlines to define form, fit and functions of avionics equipment)

ARINC 306 : Guidance For Designers Of Aircraft- Electronic Installations

ARINC 307 : Aircraft Integrated Data System Wire Bundle Provisions

ARINC 404A : Air Transport Equipment Cases And Racking

ARINC 406A : Airborne Electronic Equipment

ARINC 408A : Air Transport Indicator Cases And Mounting

ARINC 413A : Guidance For Aircraft Power Utilisation And Transient Protection

ARINC 414 : General Guidance For Equipment And Installation Engineers

ARINC 415 : Operation/Technical Guidelines On Failure Warning and Functional Test

ARINC 419 : Digital Data System Compendium

ARINC 421 : Guidance For Standard Subdivision of ATA Spec 100 Numbering System for Avionics

ARINC 422 : Guidance For Modification Status Indicators & Avionics Service Bulletins

ARINC 424 : Navigation System Data Base

ARINC 429 : Mark 33 Digital Information Transfer System

ARINC 528 : Airborne Tape Recorder

ARINC 533A : Airborne HF SSB/AM System

ARINC 541 : Airborne Magnetic Flight Data Recorder

ARINC 542 : Airborne Oscillograph Flight Data Recorder

ARINC 542A : Digital Flight Data Recorder

ARINC 551 : Airborne Glide Slope Receiver - Mark 2

ARINC 557 : Airborne Voice Recorder

ARINC 559A : Mark 2 Airborne HF SSB/AM System

ARINC 561 : Air Transport Inertial Navigation System - INS

ARINC 566 : Airborne VHF Communications Transceiver And Mark 1 VHF SATCOM System

ARINC 566A : Mark 3 VHF Communications Transceiver

ARINC 569 : Airborne Distance Measuring Equipment

ARINC 569 : Heading and Altitude Sensor (HAS)

ARINC 571 : Inertial Reference System (INS)

ARINC 572 : Mark 2 Air Traffic Control Transponder

ARINC 573 : Aircraft Integrated Data System (AIDS) Mark 2

ARINC 574 : Passenger Announcement, Entertainment & Service Multiplex System

ARINC 575 : Mark 3 Subsonic Air Data System (Digital)

ARINC 576 : Mark 4 Subsonic Air Data System

ARINC 577 : Audible Warning System

ARINC 578 : Airborne ILS Receiver

ARINC 579 : Airborne VOR Receiver

ARINC 585 : Electronic Chronometer System

ARINC 591 : Quick Access Recorder For Aids System (OAR)

ARINC 592 : Airborne Passenger Tape Record

ARINC 594 : Ground Proximity Warning System (GPWS)

ARINC 595 : Barometric Altitude Rate Computer

ARINC 596 : Mark 2 Airborne SELCAL System

ARINC 597 : Aircraft Communications Addressing And Reporting System (ACARS)

ARINC 597A : Enhanced ACARS Avionics

ARINC 59MA : Airborne Announcement Tape Reproducer

ARINC 600 : Air Transport Avionics Equipment Interfaces

ARINC 601 : Control/Display Interfaces

ARINC 602 : Test Equipment Guidance

ARINC 602A : Test Equipment Guidance

ARINC 603 : Airborne Computer Data Loader

ARINC 604 : Guidance For Design And Use Of built-In Test Equipment (BITE)

ARINC 605 : Users Guide For ARINC 616 Avionics Subset Of ATLAS Language

ARINC 606 : Guidance For Electrostatic Sensitive Device Utilization & Protection, Sup. 1

ARINC 608 : Standard Modular Avionics Repair And Test System (SMART)

ARINC 609 : Design Guidance For Aircraft Electrical Power Systems

ARINC 610 : Guidance For Design and Integration of Aircraft Avionics Equipment In Simulators, Supplement 1

ARINC 611 : Guidance For The Design and Installation Of Fuel Quantity Systems, Sup. 1

ARINC 612 : BITE Glossary

ARINC 613 : Guidance for Using the Ada Programming Language in Avionics Systems

ARINC 614 : Standard Firmware Loader For Avionics Shops

ARINC 615 : Airborne Computer High Speed Data Loader, Supplement 3

ARINC 616 : Avionics Subset of ATLAS Language

ARINC 620 : Data Link Ground System Standard And Interface Specification

ARINC 622-1 : The ACARS Convergence Process

ARINC 624 : Design Guidance For Onboard Maintenance System

ARINC 626 : Standard ATLAS For Modular Test

ARINC 627 : Programmers Guide For Smart Systems Using ARINC 626 ATLAS

ARINC 629 : Multi Tester Data Bus : Part 1 - Technical Description

ARINC 629 : Multi-Transmitter Data Bus

ARINC 631 : Aviation Packet Communications Functional Description

ARINC 651 : Design Guidance For Integrated Modular Electronics

ARINC 659 : Backplane Data Bus for Integrated Modular Avionics

ARINC 701 : Flight Control Computer System

ARINC 702 : Flight Management Computer, Supplement 4 & 5

ARINC 703 : Thrust Control Computer

ARINC 704 : Inertial Reference System, Supplement 6

ARINC 705 : Altitude and Heading Reference System (AHRS)

ARINC 706 : Subsonic Air Data System

ARINC 707 : Radio Altimeter, Supplement 6

ARINC 708 : Airborne Weather Radar

ARINC 709 : Airborne Distance Measuring Equipment, Supplement 8

ARINC 709A : Precision Airborne Distance Measuring Equipment

ARINC 710 : Mark 2 Airborne ILS Receiver

ARINC 711 : Mark 2 Airborne VOR Receiver

ARINC 714 : Mark 3 Airborne SELCAL Systems

ARINC 715 : Airborne Passenger Address Amplifier

ARINC 716 : Airborne VHF Communications Transceiver

ARINC 717 : Flight Data Acquisition And Recording System

ARINC 718 : Mark 3 ATC Transponder

ARINC 719 : Airborne HF/SSB System

ARINC 720 : Digital Frequency/Function Selection for Airborne

ARINC 722 : Electronic Equipment Protection Video System

ARINC 723 : Ground Proximity Warning System (GPWS)

ARINC 724 : Mark 2 Aircraft Communications

ARINC 724A : Mark 2 ACARS Avionics

ARINC 724B : Aircraft Communications Addressing and Reporting System (ACARS)

ARINC 725 : Electronic Flight Instruments (EFIS)

ARINC 726 : Flight Warning Computer System

ARINC 727 : Airborne Microwave Landing System

ARINC 728 : Avionics Refrigeration and Cooling System (ARCS)

ARINC 729 : Analog And Discrete Data Converter System

ARINC 730 : Airborne Separator Assurance System

ARINC 731 : Electronic Chronometer

ARINC 732 : Mark 2 Airborne Passenger Audio Entertainment Tape Reproducer, Supplement 1

ARINC 735 : Traffic Alert and Collision Avoidance System (TCAS), Supplement 1

ARINC 737 : On Board Weight and Balance System. Supplement 1

ARINC 738 : Air Data and Inertial Reference System (ADIRS)

ARINC 739 : Multi-Purpose Control and Display Unit

ARINC 740 : Multiple-Input Cockpit Printer

ARINC 7411P2 : Aviation Satellite Communication System : Part 2 - Satellite Design

ARINC 741P1 : Aviation Satellite Communication System : Part I- Aircraft Installation Provisions

ARINC 741P4 : Aviation Satellite Communications System : Part 4 - Specification and Description Language

ARINC 742 : Design Guidance For Windshear Warning and Guidance Equipment

ARINC 743 : Airborne Global Positioning System Receiver


ARINC 744 : Full Format Printer

ARINC 745 : Automatic Dependent Surveillance, Supplement 1

ARINC 746 : Cabin Communications System, Supplement 1

ARINC 747 : Flight Data Recorder

ARINC 748 : Communications Management Unit (CMU)

ARINC 750 : VHF Data Radio (VDR)

ARINC 751 : Gate-Aircraft Terminal Environment Link (Gatelink) - Aircraft Side

ARINC 752 : TFTS Airborne Radio Sub-System

ARINC 753 : HF Data Link System

ARINC 757 : Cockpit Voice Recorder (CVR)

ARINC539A : Airborne 400 Hz AC Tape Reproducer

ARLO : Air Liaison Officer

ARM : ADS Report Message

ARM : Air Request Message

ARM : Anti Radiation Missile

ARM : Armenia

ARMATS : State Closed Joint-Stock Company of Armenian Air Traffic Services

ARN : ATS Routes and Associated Navigation Means

ARN-1 (Table) : Basic ATS Route Network in the Lower and Upper Airspace

ARN-2 (Table) : Radio Navigation Aids Associated with the Basic ATS Route Network Terminal Area and Instrument Approach Procedures

ARN-V2 : ATS Route Network - Version 2 (ECAC, EATM)

ARN-V3 : ATS Route Network - Version 3 (ECAC, EATM)

ARNG : Arrange

ARO : Air Traffic Service Reporting Office

ARP : Aerodrome Reference Point

ARP :  Aerospace Recommended Practice

ARP : Automated Route Planning

ARPA : Advanced Research Project Agency

ARPL : ADEXP Format Repetitive Flight Plans Message

ARQ : Automatic error Correction

ARQ : Automatic Request Repeat

ARQ : Automatic Response to Query

ARR : Arrive or Arrival or Arrival Message

ARR SP : Arrival Sequence Planner

ARS : Aeronautical Radio Navigation Service

ARS : Avoidance Routing Scheme

ARS : Special air-report (message type designator)

ARSA : Airport Radar Serve Area

ARSC : Air Rescue Sub Centre

ARSR : Air Route Surveillance Radar

ARST :Arresting (specify (part of) aircraft arresting equipment)

ART : Analysis and Replay Tool

ARTAS : Air Traffic Management Surveillance Tracker and Server System


ARTCC : Air Route Traffic Control Centre

Artemis : An ESA experimental telecommunications satellite hosting an EGNOS navigation transponder

ARTES-9 : Advanced Research in Telecommunication Systems

ARTS : Area Radar Training Squadron

ARTS : Automated Radar Terminal System

ARU : Archive to UNIX

ARU : Airspace Reservation Unit

AS : Airspeed

AS : Airspace

AS : Altostratus

AS, A-S : Anti-Spoofing

ASA : Aircraft Situation Awareness

ASA : Automated Support to ATC

ASA : Automatic Slot Assignment

ASA System : Automatic Slot Assignment System

ASAP : Aircraft Separation Assurance Programme

ASAP : As soon as possible / practicable

ASARS : Air Surveillance Airborne Radar System

ASAS : Airborne Separation Assurance System

ASC : Ascend to or Ascending to

ASCAP : Automatic SSR Code Assignment Procedure

ASCB : Avionics Standard Communication Bus

ASCII : American Standard Code for Information Interchange / Exchange

ASCOT : Airport Slots Compliance Tools

ASDA : Accelerated Stop Distance Available

ASDAR : Aircraft to Satellite Data Relay

ASD : CFMU/ENGD - Architecture & System Design Section

ASDE : Airport Surface Detection Equipment

ASD-TF : Air Situation Display Task Force

 ASE : Altimetry System Error

ASE : Application Service Element

ASECNA : Agency for the Safety of Air Navigation in Africa and Madagascar

ASEP : ACCS Surveillance Exploratory Prototype (NATO / SHAPE)

ASHTAM : NOTAM relating to volcanic and/or dust activity (ICAO)

ASI : Aerospace Sciences Inc.

ASI : Asia Region (ICAO)

ASI Air Speed Indicator

ASIC : Application-Specific Integrated Circuit

ASM : Ad-hoc Schedule Message

ASM : AirSpace Management

ASMAC : Automated System for Management of Aeronautical Information and Charting

ASMC : Airspace Management Communications

ASMGCS : Advanced Surface Movement Guidance and Control Systems

ASMI : Airport Surface Movement Indicator

ASMT : ATM Safety Monitoring Tool

ASMTF : Airspace Management Task Force

ASN : Abstract Syntax Notation

ASN 1 : Abstract Syntax Notation One

ASNO : Approach Sequence Number

ASO : Air Surveillance Officer

ASOC : Air Sovereignty Operations Centre

ASOC : Army Support Operations Centre

ASOP : Airspace Organisation and Procedures

ASOS : Automatic Surface Observing System

ASP : Adjustable System Parameter

ASP : Aeronautical Fixed Service Systems Planning for Data Interchange Panel

ASP : Air Space

ASP : AIRCOM Service Processor (SITA)

ASP : Arrival Sequence Planner

asp : assigned speed

ASPH : Asphalt

ASPP : Aeronautical Fixed Service Systems Planning for Data Interchange Panel

ASQF : Application Specific Qualification Facility (part of EGNOS)

ASR : Airport Surveillance Radar (TAR)

ASR : Altimeter Setting Region

ASRS : Aviation Safety Reporting System

ASRT : Air Support Radar Team

ASSR : Assigned SSR code (FPPS/DECADE)

ASTA : Airport Surface Traffic Automation

ASTER : Aviation Safety Targets for Effective Regulation

ASTERIX : All-purpose Structured Eurocontrol Radar Information Exchange

ASTP : ADS Studies and Trials Project

ASW : Anti Submarine Warfare

ASW : Air Situation Window

AT At (an altitude)

AT : Actual Time Count Down

AT : Air Transport

AT : At Time

AT…: At (following by time at which weather change is forecast to occur)

AT : Austria (ISO Country Code)

AT : Royal Air Maroc (airline)

ATA : Actual Time of Arrival

ATA : Air Transport Association (of America)

ATA : Airport Traffic Area

ATAC : Airspace Traffic Data Capture

ATAF : Allied Tactical Air Force

ATAFF : Air Traffic Arbitrated Free Flight

ATAG : Air Transport Action Group

ATAR : Automatic Air Reporting

ATARS : Automatic Traffic Avoidance and Resolution System

ATAS : Air Traffic Advisory Service

ATC : Air Traffic Control

ATCA : Air Traffic Control Association (US)

ATCA : Allied Tactical Communications Agency

ATCA : Air Traffic Control Assistant

ATCAP : Air Traffic Control Automation Panel (ICAO)

ATCAS : (Sweden) ATC Automated System

ATCC : Air Traffic Control Centre

ATCC : Air Traffic Control Clearance

ATCCC : Air Traffic Control Command Centre

ATCEUC : Air Traffic Controllers European Unions Co- ordination

ATCgram : Illustration in graph form of the main functional levels of ATC systems

ATC-HMI : Air Traffic Control Human Machine Interface

ATCI : Airport ATC and Information systems

ATCO : Air Traffic Controller or Air Traffic Control Officer

ATCRBS : Air Traffic Control Radar Beacon System

ATCRU : Air Traffic Control Radar Unit

ATCS : Air Traffic Control Service

ATCS Advanced Train Control Systems

ATCSCC Air Traffic Control System Command Center

ATCSQ : ATC Safety Questionnaire

ATCT : Airport Traffic Control Tower

ATCU : Air Traffic Control Unit

ATD : Actual Time of Departure

ATD : Along Track Distance

ATDS : Airborne Tactical Data System

ATE : Automatic Test Equipment

ATFC : Air Traffic Flow Controller

ATFM : Air Traffic Flow Management

ATFM : CFMU/DEVD - ATFM Application Section

ATFMC : Air Traffic Flow Management Communications

ATFMO : Air Traffic Flow Management Organisation

ATFMP : Air Traffic Flow Management Position

ATFMS : Air Traffic Flow Management System

ATFMU : Air Traffic Flow Management Unit

ATFR : Air Traffic Flow Regulator

ATG : Air Traffic Generator

ATHR Autothrust System

ATI : Automatic Tracking Initiation

ATIC : Administrative and Technical Inspection Committee (Agency structure)

ATIF : ATN Trials Infrastructure

ATILO : Administrative Tribunal of the International Labour Organisation

ATIS : Automatic Terminal Information Service

ATLAS : Air Traffic Land and Air Study [or Airborne Systems] (European Commission)

ATLC : Atlantic

Atm : Tyre Pressure (KG/cm3)

ATM : Air Traffic Management

ATM : Air Transportation Management

ATM : Asynchronous Transfer Mode

ATM 2000+ : Eurocontrol ATM Strategy for the Years 2000+

ATMAS : Air Traffic Management Automated System (It. ATFM)

ATMC : Air Traffic Management Centre

ATMCP : ATM Operational Concept Panel (ICAO)

ATMCT : Air Terminal Movement Control Team Centre (NATS UK)

ATMG : Air Traffic Management Group

ATMO : Air Traffic Management Organisation

ATMOS : Air Traffic Management Operating System

ATMS : Advanced Air Traffic Management System

ATN Aeronautical Telecommunications Network (the collection of ground sub networks, air/ground sub networks and airborne sub networks interconnected by ATN routers that support computer-to-computer, internetwork communication and message transfer between host computers using the OSI ISO protocol architecture)


ATN RD : Aeronautical Telecommunication Network Routing Domain

ATN RDC : Aeronautical Telecommunication Network Routing Domain Confederation

ATNC : ATN and Communication Architecture

ATNI : Aeronautical Telecommunication Network Internet

ATNP : Aeronautical Telecommunication Network Panel (ICAO)

ATNSI : ATN System Inc. (US)

ATO : Actual Time Overhead of Overflying (CFMU - CASA)

ATO : Airborne Traffic Observation

ATOC : Allied Tactical Operations Centre

ATOPS : Advanced Transport Operating System

ATOT : Actual Take Off Time

ATP : At…(time or place)

ATP : Airline Transport Pilot

ATPL : Airline Transport Pilot License

ATRAC : Air Navigation Services Employee Training Concept

ATRACC : ATC System for Riga Area Control Centre

ATRK : Alone Track Error

ATS : Air Traffic Services

ATS : Automatic Throttle System

ATSA : Air traffic Services Authority (Bulgaria &Croatia)

AT-SAT : Air Traffic Selection and Training

ATSD : Air Traffic Situation Display

ATSC Air Traffic Service Communications (Communications related to air traffic services. This includes ATC, aeronautical and meteorological information, position reporting and services related to safety and regularity of flight)

ATSEP : Air Traffic Safety Electronics Personnel

ATSIS : Air Traffic Services Investigation System

ATSN : Air Traffic Service Network

ATSO : Air Traffic Services Operator

ATSORA : Air Traffic Services Outside Regulated Airspace

ATSP : Air Traffic Service Providers

ATSSD : ATS Standards Department

ATSU : Air Traffic Service Unit

ATSup : Air Traffic Supervisor

ATT : Along Track Tolerance

ATT : Attitude Indicator

ATTN : Attention

ATWR : Apron TWR

ATYP :  Aircraft Type

ATZ : Aerodrome Traffic Zone

AU : Arbitrary Unit

AU : Australia (ISO Country Code)

AUA : ATC Unit Airspace

Aud : Audio aids

AUP : Airspace Use Plan

AURBO : Aurora Borealis

AUS : Airspace Utilisation Service

AUSOTS : Australian Organised Track Structure

AUSTRO CONTROL : Österreichische Gesellschaft für Zivilluftfahrt mbH (AT)

AUTH : Authority

AUTH : Autorized or Authorization

AUTO : Automated (Metar) No Human Intervention

AUTOB : Automatic Weather Reporting System

AUTOCAD : Automatic Computer Aided Design

AutoNav : Auto-Navigation

AUTOVON : Automatic Voice Network

AUW : All Up Weight

AUX : Auxilliary

AV : Audio-visual aids

AV : Avianca

AVAIL : Available

AVBL : Available

A-VASIS : Advanced Visual Approach Slope Indicator System

AVENUE : ATM Validation Environment for Use towards EATMS

AVG : Average

AVGAS : Aviation Gasoline

AVHRR Advanced Very High-Resolution Radiometer

AVI : Audio/Video Interleaved

AVOL : Aerodrome Visibility Operational Level

AVPAC : Aviation VHF Packet Communications

AW : Area Width

AW : Aerial Work

AW/P : Active Way Point

AWACS : Airborne Warning and Control System

AWAS Automated Weather Advisory Station

AWIPS Advanced Weather Interactive Processing System

AWIR : Automatically generated What-If Re-routing

AWOG : All Weather Operations Group

AWOP : All Weather Operations Panel (ICAO)

AWOS : Automatic Weather Observing System

AWSS : Automated Weather Sensor System

AWP : Ancillary Working Position

AWP : Arrival Waypoint

AWP : Aviation Weather Processors

AWR/Rn : Alternative flight plan on the basis of the Aircraft Operator „What-If“ Re-route Function (AOWIR), whereby „n“ designates the current number of the AOWIR alternative flight plan

AWTA : Advise at What Time Table

AWX : All Weather

AWY : Airway

AY : Finnair (airline)

AZ : Aerodrome zone

AZ : Alitalia (airline)

AZ : Azerbaijan (ISO countries Codes)

AZM : Azimuth




B : At or Below (constrained altitude)

B: Beginning of Precipitation (Time in minutes) WX Reports only

B : Belgium

B : Blue

B&D : Bearing and Distance

B&H : Bosnia and Herzegovina

B/C : Benefit / Cost

B/CRS : Back Course

BA  : Barometric Altitude

BA : Bosnia and Herzegovina (ISO Country Code)

BA : Breaking Action

BA : British Airways (airline)

BAA : British Airport Authority

BADA : Base of Aircraft Data ; Aircraft performance Data Base

BAF : Belgian Air Force

BA FAIR : Braking action Fair

BALPA British Air Line Pilots Association

BA NIL : Braking Action Nil

BA POOR : Braking Action Poor

BARS : Behaviour Anchored Rating Scales

BARTCC : Berlin Air Route Traffic Control Centre

BASE : Cloud Base

Base AM : Base Arrival Manager

Base AMD : Base Arrival Manager Display

BASIS British Airways Safety Information System

BAST : Basic ATC Skills Trainer

BATAP : `Type-B' Application To Application Protocol

BAZ : Bundesamt für Zivilluftfahrt (Austria) (AT) / Austrian aviation authority

BC : Patches (meteo)

BC : Back Course

BCA : Border Crossing Authority

B-CAS : Beacon Collision Avoidance System

BCBP : Bilateral Communication Plan Co-ordination

BCD : Binary-Coded Decimal

BCFG : Fog Patches

BCH: Beach

BCKG: Backing

BCMT : Beginning of Civil morning twilight

BCN : Beacon

BCST : Broadcast

Bd : Baud

BD : British Midland (airline)

BDP : Brussels ACC Computer

BDR : Battle Damage Repair

BDRY : Boundary

BE : Belgium (ISO Country Code)

BECMG : Becoming (meteo)

BEM : Boundary Estimate Message (SARP)

BENELUX : Belgium, Netherlands and Luxembourg

BER : Bite Error Rate

BERM : Snowbank(s) Containing Earth/Gravel

BF MarkAir

BFD : Basic Flight Data message

BFDK: Before Dark

BFL : Blocked Flight Level Area

BFR : Before

BFWG : Budgetary and Financial Working Group

BG : Bulgaria (ISO Country Code)

BGD : Background

BHL-System : (Name of HR-registration system)

BIAC : Brussels International Airport Company

BIF : Deliver Implementation Benefits Faster (EATCHIP Adaptation)

BINOVC: Breaks in Overcast

BIRDTAM : NOTAM on Bird Activity

BIS : Boundary Intermediate System

BIST : Build-In Self Test

BIT : Built-In Test

BITE : Built-In Test Equipment

BKN : Broken (meteo)

BL: Between Layers

BL : Blowing (meteo)

BLD : Build

BLDG : Building

BLDUP : Buildup

BLKT: Blanket (WX)

BLO : Below clouds

BLW : Below

BLZD : Blizzard

BMUN : Better Meet User Needs (EATCHIP Adaptation)

BMS : Basic Meteorological Services

BN : Backbone Node (RMCDE/ RADNET)

BNC : Backbone Network Computer

BND : Bound

BNDRY : Boundary

BNF : Backus Naur Form

BNL : Benelux

BOI : Biographical Oriented Interview

BOMB : Bombing

BOS : Behaviour anchored Rating Scales

BOVC : Base of Overcast

BP : Business Plan

BPF : Band Pass Filter

BPN : Boundary Point of Entry

bps : bits per second

BPS : Boundary Point Sector

BPSK : Binary Phase Shift Keying

BPSX : Boundary Point Sector Exit

BR : Mist (meteo)

BR : Brazil (ISO Country Code)

BR : Eva Air (airline)

BRA : Basic Rate Access

BRA : Bearing, Range and Altitude

BRF : Brief

BRF : Short (used to indicate the type of approach desired or required)

BRG : Bearing

BRITE : Basic Research in Industrial Technologies for Europe = EURAM

BRITE : Bright Radar Indicator Tower Equipment

BRK: Break

BRKHIC : Breaks in Higher Overcast

BRM : Barometer

B-RNAV : Basic Area Navigation

BRNAV : Basic Air NAVair Traffic Control Unit

BRKG : Braking

BRT Brightness

BS : Band Stop (ACS)

BS : BootStrap (RADNET Introduction - MAS)

BS : Commercial Broadcasting station

BSC : Binary Synchronous Communications

BSP : Aircraft Parameter Downlink (service)

BSS : Best Signal Selection

BSU : Beam Steering Unit

BTC : Basic Training Course

BTEC : Business and Technician Education Council

BTH (R) : Beyond the Horizon (Radar)

BTL : Between Layers

BTN : Between

BTWN : Between

BVR : Beyond Visual Range

BW : Bandwidth

BWP : Budget and Work Programme Planning

BY : Belarus (ISO countries Codes)

BYD : Beyond




C : Centre (runway indentification)

C : Degree Celcius

C/A Code : Course / Acquisition Code

C/d : Capacity demand ratio

C/M : Carrier-to Multi-Path Ratio

C/N : Carrier-to-Noise Ratio

C/N0 : Carrier-to-Noise-Density Ratio

C/S : Call Sign

C102 (TSO) : Helicopter Radar Approach, Issued 04/02/84 (RTCA DO-172, Issued 03/83)

C104(TSO) : Microwave Landing System (MLS) Receiving Equipment, Issued 06/82 (RTCA DO-174, Issued 03/82)

C105(TSO) : Optional Display For Weather Radar, Issued 06/84 (RTCA DO-174, Issued 03/81)

C110(TSO) : Airborne Thunderstorm Detector, Issued 01/01/01,(RTCA DO-187, Issued 11/84

C115(TSO) : RNAV Equipment Using Multi-Sensor, Issued 06/86 (RTCA DO-187, Issued 11/84)

C118(TSO) : Airborne TCAS I Equipmen4 Issued 08/88 (RTCA DO-197, Issued 3/87)

C119(TSO) : Airborne TCAS II Equipment (RTCA Do-185, Issued 09/83)

C120(TSO) : RNAV Equipment Using OMEGA/VLF, Issued 01/88 (RTCA DO-185 issued 9/83)

C2 level : Security level in the United States Department of Defense

C31d(TSO) : High Frequency (HF) Communications Transmitting Equipment, Issued 04/84 (RTCA DO-163, Issued 03/76)

C32d(TSO) : High Frequency (HF) Communications Receiving Equipment, Issued /83

C34e(TSO) : ILS Glide Slope Receive Equipment, Issued 01/88 (RCTA DO-192, Issued 07/86)

C35d(TSO) : Radio Marker Receiving Equipment, Issued 04/71 (RTCA DO-143, Issued 01/70)

C36e(TSO) : ILS Localizer Receiver Equipment, Issued 01/88 (RTCA) DO-195, Issued 11/86)

C37d(TSO) : VHF Comm transmitting Equipment, Issued 08181 (RTCA DO-157, Issued 08/81 (RTCA DO-157, Issued 08/74)

C38c(TSO) : VHF Comm Receiving Equipment; Issued 08/81 (RTCA DO-156, Issued 08/74)

C38d(TSO) : VHF Comm: Receiving Equipment, Issued 08/81 (RTCA DO-186, Issued 1/84)

C3CM(TSO) : Command, Control and Communications Countermeasures

C3T : Controller Tools and Transition Trials. See EVP

C40c(TSO) : Airborne VOR Receiving Equipment, Issued 01/88 (RTCA DO-1996, Issued 11/86)

C41d(TSO) : Airborne ADF Equipment, Issued 05/86 (RTCA DO-179, Issued 05/82)

C50c(TSO) : Audio Selector Panel and Amps, Issued 01/83 (RTCA DO-170, Issued 01/80)

C57a(TSO) : Headsets And Speakers, Issued 01/83 (RTCA DO-170, Issued 01/80)

C58a : Aircraft Microphones, Issued 01/83 (RTCA DO-170, Issued 01/80)

C59 : Selective Calling (SELCAL) Equipment, Issued 01/01 (RTCA DO-93, Issued 2/59)

C60b : RNAV Equipment Using LORAN -C, Issued 05/88 (RTCA DO-194, Issued 11/86)

C63c : Airborne Weather Radar, Issued 08/83 (RTCA DO- 173 Issued 11/80)

C65a : Doppler Radar Air Speed Equipment, Issued 08/83 (RTCA DO-158, Issued 11/75)

C66b : Airborne DME (Distance Measuring Equipment), Issued 08/81 (RTCA DO-1514, Issued 04/60)

C67 : Airborne Radar Altimeters, Issued 11/64 (RTCA DO- 103, Issued 4/60)

C68a : Dead Reckoning Computer Equipment, Issued 08/83 (RTCA DO-158, Issued 10/75)

C74e : Airborne ATC Transponder Equipment, Issued 01/01 (RTCA DO 161A, Issued 05/76)

C87a : Low Range Radar Altimeters, Issued 01/01 (RTCA DO-155, Issued 01/74)

C91a : Emergency Locator Transmitter, Issued 04/85 (RTCA DO-183, Issued 5/83)

C92b : Ground Proximity Warning (GPWS) Equipment, 01/01 (RTCA DO-161A, Issued 05/76)

C94a : OMEGA Receiving Equipment, Issued 08/81 (RTCA DO-164A, Issued 09/79)

C : Centigrade

CA : Canada (ISO Country Code)

CA : Civil Aviation

CA : Conflict Alert

CA : Course to an Altitude (ARINC 424 Path Terminator)

CA : Clear Above (Pirep only)

CAA : Civil Aviation Authority (Great Britain)

CAAC : Civil Aviation Authority of China

CAAS : Class A Airspace

CAAS : Computer Aided Approach Sequencing

CAB : Civil Aeronautics Board

CAC : Centralized Approach Control

CAD : Computer Aided / Assisted Design

CADAS : Computer Controlled Avionics Data Acquisition System

CADF : Centralized Airspace Data Function (ECAC)

CADIN : Czech Automated Data Interchange Network

CADS : Combined Arrival and Departure Sequencing/Study (APATSI)

CADS : Computer aided Departure System

CAE : Computer Aided Engineering

CAEP : Committee on Aviation [Environmental] Protection Emissions Operational (Measures Working Group, WG/4) ; Commission on Aviation Environmental Protection (ICAO)

CAERAF : Common American-European Reference ATN Facility

CAI : Civil Aviation Inspection

CAI : Computer Assisted Input

CAIIS : Computer Aided Imagery Interpretation System

CAIR : Confidential Aviation Incident Reporting

CAIRDE : Civil Aviation Integrated Radar Display Equipment (IRE)

CAL : Computer Aided Learning

CALLSGN : Call sign

CALM : Computer Assisted Landing Management System

CALS : Computer-aided Acquisition and Logistic Support

CAM : Computer Aided Manufacturing

CAM : Conflict Alert Message

CAMI : Civil Aeromedical Institute

CAMOS : Central ARTAS Maintenance & Operational Support

CAMPS : Computer Aided Message Processing System

CAMUS : Czech Automated Multi radar System

CAN Proj. : Croatian Air Navigation Project

CANAC : Computer Assisted National ATC Centre (B)

CANSO : Civil Air Navigation Services Organization

CAO : Computer Assisted Operations

CAOFA : Co-ordination of Air Operations in the Forward Area

CAP : Combat Air Patrol

CAP : Controller Access Parameters

CAPAN : Capacity Analyzer

CAPC : Civil Aviation Planning Committee

CAPE : Computer Assisted Planning Experiment

CAPP : CFMU/DEVD - Client Applications Section

CAPSIN : CAA Packet Switched Integrated Network (UK)

CAR : Caribbean Region

CARAT : Computer-Aided (Assited) Route Allocation Tool

CARD : CNS Applications - Research and Development

CARD : Conflict And Risk Display (ODID)

CARE : Co-operative Actions of ATM Research and Development in Eurocontrol

CARFE : Conference on Airport and Route Facility Economics (ICAO)

CART : Classification And Regression Trees

CAS : Calibrated (Computed) Air Speed

CAS : Close Air Support

CAS : Collision Avoidance System

CAS : Computerized Assessment System

CASA : Computer Assisted Slot Allocation

CASE : Computer Aided Software Engineering

CASI : CFMU Aircraft Situation Image

CASOR : Civil Area Services Operations Room

CAST : Consequences of future ATM systems for air traffic controller Selection and Training

CASTA : Controller Associate for Strategic and Technical Advice

CAT x : Category x Precision Approach (I, II of III)

CAT I Facility providing operation down to 200 feet decision height and runway visual range not less than 2600 feet.

CAT II Facility providing operation down to 100 feet decision height and runway visual range not less than 1200 feet.

CAT II a Facility providing operation with no decision height limit to and along the surface of the runway with external visual reference during final phase of landing and with a runway visual range not less than 700 feet.

Cat : Category

CAT : Clear Air Turbulence

CAT : Computer Aided Testing

CAT : Commercial Air Transport

CAT : Computer Assisted Teaching / Training

CAT : Continuous Attention Task

CATCAS : Copenhagen Air Traffic Control Automated System (DK)

CATCO : Chief ATC Operations

CATIA : TF on CNS/ATM Implementation Aspects

CATSA : Croatian air Traffic Services Authority

CATSIM : CAA Air Traffic Simulator (UK)

C-ATSU : Controlling ATS Unit

CAUTRA : Automated Computer System for Air Traffic

CAVOK : Clouds and Visibility OK (Visibility, cloud and presend weather better than prescribed values or conditions)

CAVU : Clear or Scattered Clouds and Visibility Greater than Ten Miles (ceiling and visibility Unlimited)

CAWS : Common Aviation Weather Sub-System

CB : Central Battery

CB : Suckling Airways (airline)

CB : Cumulonimbus (meteo)

CBA : Cost Benefit Analysis

CBA : Cross Border Area

CBAA :  Canadian Business Aviation Association

CBAS : Class B Airspace

CBSA : Class B Surface Area

C-Band : Frequency Band

CBI : Computer Based Instruction

CBN : Common Backbone Network (sub network RAPNET = system of the national ATS, DFS = PSN)

CBPM : Computer-Based Performance Measure

CBS : Cost/Benefit Studies

CBT : Computer Based Tool

CBT : Computer Based Training

CC : Contractual Conditions

CC : Cirrocumulus

CCA : (or CCB, CCC..etc..in sequence) corrected meteorological message (message type designator) CCAS : Class C Airspace

CCB : Change Control Board

CCC : Cellular CNS Concept

CCC : Central Computer Complex

CCC : Command, Control and Communications

CCC : Common Core Content (of ATC Training)

CCCC : Cross Channel Co-ordination Centre

CCCI, C3I : Command, Control, Communications and Intelligence (network)

CCDS : Code Callsign Distribution System

CCF : Centralised Control Function (LATCC)

CCFT : Cold Cathode Fluorescent Tube

CCG : CEATS Co-ordination Group

C-Channel : Circuit Mode Channel

CCIP : Code-Callsign Input Position

CCIS : Closed Circuit Information System

CCL : Code Callsign List

CCLKWS : Counterclockwise

CCM : Computerized Control and Monitoring

CCMS : Committee on the Challenges of Modern Society

CCP : Circuit Switched Public Data Network

CCP : Configuration Control Plan

CCR : Cancel Contract Request

CCR : Constant Current Regulator

CCS : Code CallSign

CCSA : Class C Surface Area

CCTV : Closed Circuit TeleVision

CCW : Counter-Clockwise

CD : Candela

CD : Clearance Delivery

CD : Conflict Display (ODID)

CD : Council Directive

CD : Course to a DME Distance (ARINC 424 Path Terminator)

CD&A : Conflict Detection and Avoidance

CD2 : Common Digitizer 2

CD-2 : Transmission format for radar data

CDA : Client Defined Area

CDA : Conflict Display Area. Coordination Approval / CoorDination Acceptance (message)

CDA : Current Data Authority (ICAO)

CDB : Central Data Base

CDFNT : Cold Front

CDG : Roissy Charles-de-Gaulle Airport

CDI : Coordination Information

CDI : Course Deviation Indicator

CDM : Collaborate (Cooperative) Decision Making (central supporting features of gate to gate, and for enhancing capacity [airports])

CDMA : Code Division Multiple Access

CDN : Airspace Crossing Co-ordination Message / Co- ordination (message type designator)

CDP : Central Data Processing

CDP : Computer Diagnostics Program

CDPS : Central Data Processing System

CDR : Coded Departure Routes. Predefined routes used to route air traffic around areas of severe weather.

CDR : Conditional Route

CDR : Conflict Detection and Resolution

CDR : Co-ordination Request (message)

CDR : Critical Design Review

CDRL : Contracts Data Requirements List (MAS/DFS - ODS)

CD-ROM : Compact Disk / Read Only Memory

CDS : Controller Display Support

CDSEPT : Committee to Develop Standards for Educational and Psychological Testing of The American Educational research Association, The American Psychological Association, and The National Council on Measurement in Education.

CDT : Command Delivery Time

CDTI : Cockpit Display of Traffic Information

CDTS : Console Detailed Technical Specification

CDU : Control and Display Unit (pilots' interface to the FMS)

CE : Committee of Management

CE : European Commission / Commission européenne

CEAC : Committee for European Airspace Co-ordination (NATO Group) renamed on 27.4.98 by the North Atlantic Council (=NATMC)

CEAS : Class E Airspace

CEATS : Central European Air Traffic Services (Austria, Croatia, Czech Republik, Hungary, Italy, Slovakia and Slovenia [Bosnia, Herzegowina])

CEATS LSG : Central European Air Traffic Services Legal Sub Group

CEATS UAC : Central European Air Traffic Services Upper Airspace Control Centre

CEC : Commission of the European Communities ; European Commission / Commission des Communautés Européennes (=CEE) ; Commission européenne

CEECs : Countries of Central and Eastern Europe ; Central and Eastern Europe Countries


CEF : Capacity Enhancement Function

CEFA : Co-operation for Environmentally Friendly Aviation (ERA, ACI, AEA, AECMA, EBAA, EUROCAE)

CEO : Chief Executive Officers

CEP : Circular Error Probable

CER : Cancel Emergency Mode Request

CES : Central and Eastern European States

CESA : Class E Surface Area

CESAR : Course Evaluation Sheets Analysis and Reporting

CESC : Chief Executive Standing Conference (see CEO)

CEU : Central Executive Unit (ATM / CFMU)

CEU-E : Central executive unit with Responsibility for Eastern Europe

CEU-W : Central executive unit with Responsibility for Western Europe

CEW : Civil Engineering Works

CF : Change frequency to….

CF : Course to a Fix (ARINC 424 Path Terminator)

CFAR : Constant False Alarm Rate (or Regulation)

CFB : Central Flight plan Bank

CFCF : Central Flow Control Facility

CFD : Change to Flight Data Message

CFDS : Central Flight Data Suite (PALLAS system)

CFE : Customer Furnished Equipment

CFEP : Communications Front End Processor

CFP : Cold Front Passag

CFR : Crash Fire Resque

CGL : Circling Guidance Light(s)

CFI : Certified Flight Instructor

CFII : Certified Flight Instructor Instrument

CFIT : Controlled Flight into Terrain

CFL : Cleared (Current) Flight Level

CFM : CFM International is a joint venture between GE Aviation, a division of General Electric of the United States and Safran Aircraft Engines (formerly known as Snecma), a division of Safran of France. The names of CFM International and the CFM56 product line are derived from the two parent companies’ commercial engine designations: GE's CF6 and Snecma's M56.

CFM : Central Flow Management (services)

CFM : EEC business area - support to ATFM

CFMU :  Central Flow Management Unit

CFMUSC : CFMU Steering Committee

CFTPD : Central File of Transponder Performance Data (ECC)

CFR : Code of Federal Regulations

CG : Center of Gravity

CGAS : Class G Airspace

CGS Centimeter-gram-second

CH : Channel

CH : Compass Heading

CH : Switzerland (ISO Country Code)

CHA : Character

CHAID : Chi Square Automatic Interaction Detection

CHAN : Channel

Chap. : Chapter

CHARC : Characteristic

CHC : Change

CHG : Change Message

CHG : Change of Modification

CHI : Computer-Human Interface

CHIEF : Project Switzerland (CH), Italy (I), Spain (E), France (F)

CHIRP : Confidential human Factors Incident Reporting Programme

CHMI : CFMU Human Machine Interface

CI : Cirrus

CI : Configuration Item

Cl : Cost Index

CI : China Airlines (airline)

CI : Course to Intercept (ARINC 424 Path Terminator)

CIA : CFMU Internet Application

CIADN : Croatian Integrated Aeronautical Data Network

CIC : Clearances and Information Communications

CICT : Convergence and Implementation Coordination Team (renaming of SICT)

CID : Computer Interface Device

CIDIN : Common ICAO Data Interchange Network

CIEL : Common Interface Exchange Language

CIG(s) : Ceiling(s)

CIM : Customer Information Management

CIMIL : Civil/Military Co-ordination

CINCAT : Capacity Increase through Computer Assistance Tools

CINCENT : Commander in Chief Central Europe

CINTIA : Control of Inbound Trajectories of Individual Aircraft

CIO : Conventional International Origin

CIP : CFMU Implementation Plan

CIP : Convergence and Implementation Programme

CIS : Commonwealth of Independent States (States of former USSR)

CIS : Cooperative Independent Surveillance

CIS : Critical Incident Stress

CISD : Critical Incident Stress Debriefing

CISM : Critical Incident Stress Management (HRT)

CISMO : Centralized International System Management Organization

CIT : Compressor Inlet Temperature

CIT : Critical Incidence Technique

CIT : Near or over large towns

CITRAC : Common Interface for Trajectory Calculation

CIU : Cabin Interface Unit

CIV : Civil

CJEC : Court of Justice of The European Communities (=CJEC, COJEC now European Court of Justice)

CJI : Controller Justification Indicator

CK : Check

CL : Center Line

CL : Centerline Lighting System

CL : Cleared

CL : Connectionless Mode Service

CLA : Clear type of ice formation

CLA : OCM Clearnace Echoback Message (message in the OCM Service)

CLB Climb Detent of the Thrust Levers

CLBR : Calibration

CLD : Cloud

CLD : DCL Clearance Message (message in the DCL Service)

CLG : Calling

CLIMAX : Multi-station carrier offset mode, with voting override

CLKWS : Clockwise

CLNP : Connection Less Network Protocol

CLNS : Connection Less Network Service

CLR : Clear or cleared to or clearance

CLR : Clear or Below 12,000 Feet (AWOS/ASOS/METAR)

CLRS : Clear and Smooth

CLSD : Closed

CLTP : Connection Less Transport Protocol

CLW : Communications List Window

CLX : OCM Clearance Message

cm : Centimeter

CM : Configuration (Context) Management

CM : Common Memory (CBN - CNG)

CM : Conformance Monitoring

CM : Critical Milestone (MAS/DFS - ODS)

CMA : Central Monitoring Agency (NAT)

CMA : Context Management Application

CMB : Climb

CMB : Combined (PSR and SSR)

CMC Central Maintenance Computer

CMC : Central Master Clock

CMC : Constant Mach Blimb

CMCSG : Civil and Military Co-ordination Sub-Group

CMG : Crisis management Group

CMIC : Civil Military Interface Standing Committee (New Convention)

CMIP : Contract Management and Inspection Procedures

CMIS/CMIP : Common Management Information System / Protocol

CMMC : Central Monitoring and Management Centre

CMMC : Common Maintenance Monitoring and Control

CMOS : Complementary Metal Oxid Semiconductor

CMPL : Completed or Completion or complete

CMS : Central Message Switch

CMS : Common Modular Simulator (CMTP)

CMSA : Carrier Sense Multiple Access (ICAO-ADS)

CMSND : Commisissioned

CMT : Core Management Team

CMT : Critical Milestone Test (MAS/DFS - ODS)

CMTP : Common Medium Term Plan

CMU : Communications Management Unit

CMV : Coverage Measurement Volume

CN : Change Notice

CN : China (ISO Country Code)

CN : Common Network (INTNET/RADNET)

CN : Permanent Commission for the safety of air navigation

CNACC : Common National Area Control Centre

CNATCC : Common National Air Traffic Control Centre (Bulgaria)

CNCL : Cancel

CNDN : Canadian

CNG : Common Network Group

CNL : Cancel(lation) message (ICAO)

CNS : Communication, Navigation and Surveillance

CNS : Study Group of Alternates

CNS/ATM : Communication, Navigation and Surveillance / Air Traffic Management

CNS/ATM-1 : Communication, Navigation and Surveillance / Air Traffic Management Package 1

CNTRLN : Centerline

CNVTV : Convective

CO : Connection Mode Service

CO Continetnal

COBALT : Common Objective Alignment Team

COBT : Calculated Off Block Time

COC : Combat Operations Centre or Concept

COCESNA : Central American Corporation For Air Navigation Service

COCOS : Computer Controlled SSR Code Assignment Procedures

COD : Common Medium-Term Plan Overview Document

CODA : Central Office of Delay Analysis

CODE : Aircraft address (expressed in the form of an alphanumerical code of six hexadecimal characters) when required by the appropriate ATS authority

CODEC : Coder/Decorder (ACS)

CoE : Centre of Expertise

COF : Change of Frequency

COFA : Comando Operacional Força Aérea (PT)

COFAR : Common Options for Airport Regions

COFEE : Consolidated (Checked) Operational data FEEder

COG : Coordination Group (meeting of the EANPG Programme) ICAO

COHO : Coherent Oscillator

COLL : Collapse

COLOC : Change of Location of Command

COM : Cockpit Operating Manual

COM : Communications (ICAO)

CoM : EUROCONTROL Committee of Management

COM/DIV : ICAO Communications Divisional Meeting

COM/MET : Communications / Meteorology Divisional Meeting

COM/OPS : Communications / Operations

COMALF-E : Commander of Airlift Forces - Europe

COMED : Combined Map and Electronic Display

COMG : Communications Group

COMIL : Coordination Centre for Military Airspace Use

COMIL-1N : ATS Coordination Centre for Military Airspace Utilization - Phase 1 Network

COMLAN : COMmunication Local Area Network

Comm-B  : Mode S downlink format DF20 or 21

COMNAV : Groupe de travail sur les Télécommunications et les installations de navigation (CEAC)

COMP : Operating Company

COMPAS : Computer Oriented Metering Planning and Advisory System

COMSEC : Communications Security

COMT : Communications Team

COMX : Undefined Future Communication System

CON : Continuous

CONC : Concrete

COND : Condition

CONDAR : Conflict Detection and Resolution

CONDOR : Confidential Direct Occurrence Report

CONF : Conflict

CONFACP : Conflict Accept

CONFDC : Confidence

CONOPS : Concept of Operations of Mode S in Europe

CONP : Connection Oriented Network Protocol

CONS : Continuous

CONST : Construction or Constructed

CONT : Continue

Cont'd : Continued

CONTDVD : Continental Divide

CONUS : Continental United States

COO : Coordinator

COOR : Co-ordinate or coordination

COORD : Co-ordination

COP : Change over Point

COP : Contingency Operations Plan

COP : Co-ordination Point

COPG : Common Operating Procedures Group

COPP : Connection Oriented Presentation Protocol

COPS : Common Operational Performance Specifications

COR : Correct or Corrected or Correction

COR : Correlate

CORA : Conflict Resolution Assistant

CorC++ : Computer language

CORE : Controlled Requirements Expression

CORE : CORE Requirements for ATM Working Positions

COROM : Cognitive Competencies Model

CO ROUTE Company Route (also CO RTE)

CORUM : Training and Human Resources Consultancy Company

COS : Chief of Staff

COS : Computer Operating Station

COSAAC : Common Simulator to Assess ATMF Concepts

COSP : Connection Oriented Session Protocol

COSPAS : Space system for the search of vessels in distress (translate. from Russian)

COST : (European) Cooperation in the Field of Scientific and Technical Research

COSU : CFMU/ENGD - Core Systems Unit

COSYNUS : AIRBUS Training Database

COT : At the Coast

COTP : Connection Oriented Transport Protocol

COTR Contracting Officer's Technical Representative

COTS : Commercial Off-The-Shelf (System)

COV : Cover or Covered or Covering

CP : Circular Polarisation

CP : Conflict Probe (PATs)

CP : Contact Person (Eurocontrol)

CP : Control Panel

CP : CWP Processor Unit

CPA : Closest Point of Approach

CPC : Constant Pitch Climb

CPC : Control and Processing Centre

CPCs : Certified Professional Controllers

CPCS : Cabin Pressure Control System

CPD : Continuous Professional Development

CPD : Coupled

CPDLC : Controller Pilot Data Link Communications

CPF : Central Processing Facility

CPI : Californian Psychological Inventory

CPL : Commercial Pilots License

CPL : Current Flight Plan (message)

CPL : Customer Priority Listing (NOG)

CPR : Conflict Prediction and Resolution

CPS : Central Print Service  / Central Processing System

CPS : Characters Per Second

CPU : Central Processing Unit

CR : Central Region

CR : Course to a VOR Radial (ARINC 424 Path Terminator)

CR : Czech Republic

CR(A)OC : Central Region (Air) Operations Centre

CRAF : Central Reservation Airspace Facility

CRAF : Civil Reserve Air Fleet

CRAF : Computer Resolution Advisory Function

CRAFS : Civilian Request for Airspace and Flight Data System

CRAM : Conditional Route Availability Message

CRATF : Communications Requirements Analysis Task Force

CRC : Control and Reporting Centre

CRC : Cyclic Redundancy Check

CRCO : Central Route Charges Office

CRD : Conflict Risk Display

CRDA : Converging Runway Display Aid

CRDS : CEATS Research & Development & Simulation Centre

CRDS : Colour Raster Scan Display

CRE : Class Rating Examiner

CREME : Creating the EATCHIP Management Environment

CRF : Central Repair Facility (RMCDE - MAS)

CRI : Class Rating Instructor

CRITTER Civil Rotorcraft IFR Terminal-Area Technology Enhancement Research

CRM : Cockpit / Crew Resource Management

CRM : Collision Risk Modelling (ICAO - ADS)

CRM : Co-ordination Revision Message

CRMCS : Central RADNET Monitoring and Control System

CRNA : Centre Régional de la Navigation Aérienne (DGAC/DNA/SCTA, France)

CRS : Contingency Routing System

CRS : Controller Route Sequence (FPPS/DECADE)

CRS : Course

CRT : Choice Reaction Time

CRZ : Cruise

CS : Callsign or Contract Signature

CS : Cirrostratus

CS : Collapsed Sector

CSAC : Cooperative Structural Airspace Concept (ICAO)

CSAR : CFMU System Anomaly Report (FORM)

CSC : Common Signalling Channel

CSCE : Conference on Security and Cooperation in Europe

CSCW : Computer Supported Co-operative Work

CSD : Concept and System Domain

CSD Constant Speed Drive

CSD : Context and Scope Document

CSD : Context Specification Document

CSDT : Concept & Systems Development Team

CSDT : Context and System Domain Team

CSEL : Combat survivor evader locator

CSF : Critical Success Factor (EATMS, CSD)

CSFR : Czech and Slovak Federal Republic

CSI : Combined Safety Investigation

CSI : Critical Success Indicator

CSM : Central Service Modules (RMCDE / RADNET)

CSM : Chaotic Situation Management

CSMA : Carrier Sense Multiple Access

CSMA/CD : Carrier Sense Multiple Access with Collision Detect

CSN : Channel Sequence Numbers

CSO : CFMU/ENGD/SOS - CFMU System Operations HELPDESK Team

CSP : Communication Service Provider

CSPD Unit : CEATS Strategy, Planning and Development Unit

CSPDU : CEATS Strategic Planning & Development Unit

CSR : Cursor

CSR : Customer Service Requests (NOG - database for DPN operators)

CSSR : Conventional SSR

CST : Coast

CSU : Control Sector Unit

CSU-P : Centre Supervisor

CT : Centre (select)

CT : Control Tower

CT : Cooperative Tools (PATs)

CT : Core Tasks

CT : Core Team

CTA : Calculate Time of Arrival

CTA : Controlled-Time of Arrival

CTA : Cognitive Task Analysis

CTA : Control Area (ICAO Term)

CTAF : Common Traffic Advisory Frequency

CTAM : Climb to and maintain

CTAS Center TRACON Automation System

CTB : Co-operative Tube Based

CTC : Cancel All Contracts And Terminate Connection Request (ICAO)

CTC : Centralized Train Central

CTC : Contact

CTD : Calculated time of Departure

CTF : Communication Task Force

CTG : Common Training Group (of AISAP)

CTGY : Category

CTI : Collegiate Training Initiative

CTL : Control

CTMO : Central Air Traffic Flow Management Organisation (ICAO concept)

CTN : Caution

CTO : Calculated Time Over

CTO : Computed Time Over (CFMU - CASA)

CTOT : Calculated Take Off Time

CTR : Center

CTR : Civil Tilt Rotor

CTR : Controller or Control Zone

CTRL Control

CTRS : Common Time Reference System

CTS : Command Tracking Stations

CTSKLS : Catskills

CTWUEC : Committe of Transport Workers' Unions in the European Community (now FST : Federation of Transport Workers' Unions in the European Union = acronym formed from its French title)

CU : Control Unit

CU : Cumulus

CUF : Cumuliform

CUG : Closed User Group

CUP : Computer Utility Program

CUP : CWP-Unit Processor

CUR : Current Sector or Centre or Controller

CUST : Customs

CV : Curriculum Vitae

CVFR : Controlled Visual Flight Rules

CVO : Code Validity Overlap

CVR : Cockpit Voice Recorder

CVR : Console Voice Recorder

CVSM : Conventional Vertical Separation Minimum

CVSRF Crew-Vehicle Simulation Research Facility (NASA Ames)

CW : Clockwise

CW : Continuous Wave

CWAR : Continuous Wave Acquisition Radar

CWBS : Contract/Complete Work Breakdown Structure

CWDPS : Central Weather Data Processing System

CWIR : CFMU Generated What-If Re-routing

CWP : Controller Working Position

CWS : Control Wheel Steering

CWS : Collision Warning System

CWY : Clearway

CX : Cathay Pacific Airways (airline)

CY : Cyprus (ISO Country Code)

CY : Cyprus Airways (airline)

CYG : Cyclonic

CYGLGN : Cyclogenesis

CYPRO : Cyprus Project for ATC Improvements

CYTA : Cyprus Telecommunications Authority

CZ : Czech Republic (ISO Country Code)

CZM : Conventional Zero Meridian

CZW : Conflict Zoom Window (ODID)



D…: Danger Area

D : Day

D : Derated

D : Downward (tendency in RVR during previous 10 minutes)

D : Germany

D&D : Distress and Diversion

D.O.T : Department of Transport

D/A : Digital-to-Analog

D/D Drift Down

D/L : Data Link

DA : Decision Altitude

DA : Descent Adviser

DA : Dimensional Aspect

DA : Direct Access (VCS)

DA/H : Decision Altitude Height

DAA : Dynamic Airspace Allocation

DAAIS : Danger Area Activity Information Service

DAARWIN : Distributed ATM Architecture based on RNAV, Workstations, Intelligent tools, and Networks

DABRK : Daybreak

DABS : Discrete Address Beacon System (U.S.A)

DAC : Deployable ACCS Component

DAC : Direction Aviation Civile

DAC : Dynamic Air Traffic Control Test

DACT : Dissimilar Air Combat Training

DAF : Demand Adjustment Factors

DADC Digital Air Data Computer

DAFIF : Digital Aeronautical Flight Information File

DAI : Direct Access Intercom (VCS)

DAISY : Distributed Airport Information System (RUN)

DAIW : Danger Area Altitude Warning (or Area Proximity Warning)

DALGT : Daylight

DAP : Directorate of Airspace Policy

DAP : Downlink Aircraft Parameter

DAPs : Downlinked Aircraft Parameters

DARC : Direct Access Radar Channel

DAS : Directorate ATM Strategies (Eurocontrol)

DAS : DME Based Azimuth System

DAS : Dual Attachment Station (ODS - FDDI)

DASA, Dasa : Deutsche Aerospace

DASR : Department of ATC Systems Research

DAT : Differential Aptitude Test

DATALINK Digitized Information Transfer (air/ground)

DATAS : Datalink and Transponder Analysis System

D-ATIS : Digital ATIS

DATS TF : Delegation of ATS Task Force (ANT)

D-ATSU : Downstream Air Traffic Service Unit

DAVINCI : Departure and Arrival Integrated Management System for Cooperative Improvement of Airport Traffic Flow

DB : Data Base

dB : decibel



dBi : decibel with respect to an isotropic antenna

dBm : decibel, referenced to 1 milliwatt

DBMS : Data Base/Data Bank Management System

DBRITE : Digital Bright Radar Indicator Tower Equipment

DBS : Data Base System

DBS Direct Broadcast Satellite

dBW : decibel, referenced to 1 watt

dBZ : decibel, units of reflectivity

DC : Departure Clearance (ICAO)

DC, d.c. : Direct Current Electricity / Device Control

DCA : Department of Civil Aviation (various countries)

DCA : Director(ate) of Civil Aviation

DCAVU : Clear/Scattered Clouds, Visibility Greater than 10, Remainder of Report Missing

DCAM : Department Civil Aviation of Malta

DCC : Data Country Code (CCITT X.121 Structure)

DCD : Double Channel Duplex

DCDU : Datalink Control and Display Unit

DCE : Data Circuit-terminating Equipment (RADNET / RMCDE)

DCE : Data Communications Equipment

DCF : Discounted Cash Flow

DCF77 : German time standard, emitting on 77.5 kHz with callsign DCF

DCFEP : Data (Digital) Communications Front End Processor

DCIA : Dependent Convergent Instrument Approaches

DCKG : Docking

DCL : Departure Clearance

DCM : Decomposition and Consolidation Matrix

DCM : Document Configuration Management (EATCHIP/EATM)

DCM : Downstream Clearance Message (Service)

DCMSN : Decommission

DCMSND : Decommissioned

DCOS : Deputy Chief of Staff

DCP : Display Control Panel

DCPC  : Direct Controller Pilot Communication

DCPs : Dedicated Personal Computers

DCR : Design Certification Review

DCR : Display Control Readout (EAS)

DCRCO : Director Central Route Charges Office

DCS : Data Communications System

DCS : Double Channel Simplex

DCT : Direct (Routing)

DCT-LB : Direct Telephone - Local Battery

DCTS : Digital Communications Terminal System (UACM)

DCU : Display Control Unit

DCW : Digital Chart of the World

DDA : Downstream Data Authority

DDB : Dynamic Databank/Database

DDC : Data Display Console

DDD : Detailed Design Document

DDE : Dynamic Data Exchange

 DDL : Data Description Language

DDM : Data Display Monitor

DDP : Declaration of Design Performance

DDP : Distributed Data Processing

DDU : Display Drive Unit

DE : Germany (ISO Country Code)

DEA : Data Exchange Agreement

Debrief : Debriefing

DEC Digital Equipment Corporation


Development (ESCO)

DECCA : Hyperbolic Area Navigation System

DECR Decrement

DED : Director EATCHIP Development (in the former Agency structure)

DEE : Data Entry Equipment

DEEC : Director of the Eurocontrol Experimental Centre

DEFAMM : Demonstration Facilities for Airport Movement Management (Alcatel) (F)

DEG : Data Environment Generator

Deg : Degrees (Radar Standard)

DEGS : Degrees

DEI : Directorate EATCHIP Implementation (in the former Agency structure)

DEL : Delete

DEL : Deliverable

DEM : German Marks

DEMETER : Distance Measuring Equipment Tracer

DEMETER : DME Metering (analysis tool for DME coverage / NAVSEP)

Demo : Demonstration

DEP TC : Departure Tactical Controller

DEP : Depart, Departure (Message)

DEPA : Departure Airfield

DEPCOS : Departure Coordination System

DEP PROC : Departure Procedure

DEP-VKL : Departure Controller

DER : Departure End of the Runway

DERA : Defense Evaluation and Research Agency (UK)

DERD-X : Display of Extracted Radar Data - Extention (- Mini Computer)

DERD-X/XL : Display of Extracted Radar Data - Expanded/Expanded with LAN

DES : Data Exchange System

DES : De-Suspension Message

DES : Descent

DES : Draft Eurocontrol Standard Document

DESC : Descending

DEST : Destination Aerodrome (Airfield)

DETF : Data Exchange Trest Facility

DE-TO PR Derated Takeoff Engine Pressure Ratio

DE-TO Nl Derated Takeoff Engine Fan Speed

DETR : Department of the Environment, Transport and the Regions (UK)

DETRESFA : Distress Phase

DEV : Deviation

DEV : Domain Executive View

DEVD : CFMU – Development Division

DF : Direct to a Fix (ARINC 424 Path Terminator)

DF : Direction Finding or Display Field (VCS)

DF : Directorate Finance / Direction des Finances

DFDAU : Digital Flight Data Acquisition Unit

DFDR Digital Flight Data Recorder

DFGS/C Digital Flight Guidance System/Computer

DFIS : Data Link Flight Information Service (ICAO)

DFL : Division Flight Level

DFL : Dynamic Flight Leg

DFS : Detailed Functional Specification (CBN - CNG)

DFS : German ATC Corporation (Deutsche Flugsicherung GmbH)

DFTI : Distance from Touchdown Indicator

DG : Directional Gyro

DGAC : Direction Générale de l'Aviation Civile (F)

DGCA : Director General of Civil Aviation of ECAC Member States

DGE : Director General Eurocontrol

DGNSS : Differential Global Navigation Satellite System

DGOF : Director General's Office

DGON : Deutsches German Institute for Navigation

D-GPS : Differential Global Positioning System (ICAO - ADS)

DGS : Director General Secretariat

DGVII : Directorate General of Transport / European Commission

DH : Decision Height

DHMI : Devlet Hava Meydanlari Isletmesi (TU) / State Agency for Airports and air Traffic Control (Turkey)

DHP : Direct Host Processor

DHR : Directorate Human Resources

Di : Detectability

DIADAM : Distributed ATM Data Management

DIANS : Director Institute of Air Navigation Services

DIB : Directory Information Base

DICE : Direct Course Error

DID : Direct Identification Data

DIF : Diffuse

DIGEST : Digital Exchange Standards

DIL : Data Items List

DILCS : Dedicated Intelligence Loop Circuits System

DIN : Deutsche Industrie Norm

DIR Direct

DIR/INTC Direct Intercept

DIRA : Department for Interdisciplinary Relations of Aviation

DIRCAM : Direction de la Circulation Aérienne Militaire

DIS : Data Displayed

DIS : Directorate Infrastructure ATC Systems and Support (Eurocontrol, EATM)

DIS : Distance

DISABLD : Disabled

DISCR : Discrepancy

DIS/HUM : ATM Human Resources Unit (also know as HUM unit)

DIST : Distance

DIV : DIVert(ing) or DIVerging

DK : Denmark (ISO Country Code)

DKTS : Dakotas

DL : Data Link

DL : Delta

DL : Delta Airlines (airline)

DLA : Delay or Delayed (Message)

DLA : ATS message indicator for delay (ICAO)

DLARD : Data Link Application Requirements Document (Description) (ICAO)

DLASD : DL Application System Document

DLCRD : Data Link Communication Requirement Document

DLF : Data Link Frame

DLH : Deutsche Lufthansa (Germany)

DLIC : Data Link Initiation Capability (ICAO)

DLL : Data Link Layer

DLL : Delay Locked Loop

DLP Data Link Processor (the FAA's ground automation system that supports the Mode S subnetwork (GDLP), internetwork (ATN router) and non-ATC data link application processes)

DLPU : Data Link Processing (Processor) Unit

DLR : German Aerospace Centre (formerly the `German Aerospace Research Institute)

DLS : Data Link Splitter

DLT : Delete

DLY : Daily

DLW : Departure List Window (ODID)

DM : Maerks Air Denmark (airline)

DM : Departure Manager (PATs)

DMA : Decision Making Aids

DMA : Defense Mapping Agency

DMA : Direct Memory Access

DMA : Divergence Monitoring and Alert

DMAN : Departure Manager

DMAS : Director Maastricht Control Centre

DMC : Display Management Computer

DMC : Detachment of Military Coordinators

DME : Distance Measuring Equipment

DME/P : Precise DME

DML : Data Manipulation Language

DMR : Data Modification Reques

DMS : Database Management System

DMSH : Diminish

DMSTN : Demonstration

DMU : Data Management Unit

DNAs : ECAC Directors of Air Navigation

DNG : Danger or Dangerous

DNIC : Data Network Identification Codes (CCITT X.121 Structure)

DNS : Dense

DNS : Digital Network Signalling

DNSLP : Downslope

DNSTRM : Downstream

DNTKFX : DownTrack Fix

DOC : Designated Operational Coverage

DOC : Direct Operating Cost

DOC : Document (ICAO)

DoD MIL : Department of Defence - military

DoD : Department of Defence (US)

DODAR : Diagnosis, Options, Decision, Assessment and Revision

DOF : Date of Flight

DOI : Department of Industry

DOM : Domestic

DOP : Daily Operations Plan

DOP : Dilution of Precision

DORA : Directorate Operational Research and Analysis (UK)

DOS : Disk Operating System

DOT Department of Transportation

D-OTIS : Data Link Operational Terminal Information Service

DOTS : Dynamic Ocean Tracking System

DP : Dewpoint Temperatue

DP : Discussion Paper

DP&P : Data Processing and Peripherals

DPA : Distinguishing Path Attribute

DPC : Defence Planning Committee

DPDG : Diplomatic and Protocol Drafting Group

DPE : Digital Plot Extractor

dpi : dots per inch

DPL : Deputy Project Leader

DPL : Displayed Flight Plan

DPL : Duplicate Plan

DPNG : Deepening

DPS : ATM Data Processing System

DPS : Detailed Production Specification

DPS : Distributed Processing System

DPSADD-TF : Data Processing Systems Architecture Description Document Task Force (ATD)

DPSK : Differential Phase Shift Keying

DPT : Depth

DPT : Dynamic Time-based Planning

DPTH : Depth

DR…: Low drifting (followed by DU SA or SN)

DR : Drifting (meteo)

DR : Dead Reckoning

DR : Disaster Recovery

DRA : Defense Research Agency (UK)

DRAM : Dynamic Random Access Memory

DRC : Defence Review Committee

DRC : Dynamic Route Change

DRCP : Data Reduction Computer Program

DRDF : Digital Readout Direction Finder

DRF : Departure Flow Regulation

DRFT : Drift

DRFT : Snowbank(s) caused by wind action

DRG : During

DRMS : Distance Root Mean Square

DRU Data Retrival Unit

DRUG : Dutch Radars Users Group (NL-Eurocontrol)

DRUM : Diagnostic Recorder for Usability Measurement

DRZL : Drizzle

DS : Data Source

DS : Dust Storm (meteo)

DSA : Director(ate) Safety, Airspace, Airports and Information Services (Eurocontrol, EATM)

DSA : Directory System Agent

DSAP : Destination Service Access Point (RMCDE / RADNET)

DSB : Double Side Band (8.33 User Guide)

DSC : Downstream Clearance

DSCVHF : Digital Selective Calling - Very High Frequency

DSF : Distribution and Switching Facility

DSI : Data Source Interface

DSI : Denmark Sweden Interface

DSIPT : Dissipate

DSM : Departure Suspense Message

DSP : Datalink Status Panel

DSP : Digital Signal Processor

DSP : Domain Specific Part

DSPLCD : Displaced

DSPY Display (annunciation on CDU)

DSS : Data Systems Specialist

DSS : Decision Support System

DSS : Direct Subsystem

DST : Decision Support Tools

DST : Direct Support Task

DSU : Data-Source Selector Unit

DSU : Direct Support Unit

DT&E : Development, Test and Evaluation

DTAM : Descend to and maintain

DTE : Data Terminal Equipment (RMCDE)

DTED : Digital Terrain Evaluation Data (militaries ECAC)

DTG : Date Time Group

DTF : Data Link Test Facility (ICAO)

DTG : Distance-to-go

DTLN : International Dateline

DTMF : Dual Tone Multifrequence (code)

DTN : Data Transport Network

DTP : Desk Top Publishing

DTRT : Deteriorate or Deteriorating

DTS : Data Terminal Set

DTS : Data Transmission System

DTU : Data Transmission Unit (VCS)

DTVOR : Doppler Terminal VOR

DTW : Dual Tandem Wheels

DU : Display Unit

DU : Dust (meteo)

DUA : Dedicated User Area

DUA : Directory User Agent

DUAT : Direct User Access Terminal

DUAU : Data Update and Access Unit

DUC : Dense Upper Cloud

DUR : Duration

DURC : During Climb (Pirep)

DURD : During Decent (Pirep)

DVAS : Documentation and Visual Aids Specialist

DVI : Direct Voice Input

DVO : Direct Voice Output

DVOR : Distance VOR

DVOR : Doppler VOR

DVORTAC : Doppler VOR and Tacan

DVP : Development and Verification Platform (part of EGNOS)

DVV : Downward Vertical Velocity

DW : Dual Wheels

DWP : Departure Waypoint

DYNAV : Dynamic Route Availability

DWNDRTS : Downdrafts

DWPNT : Dew Point

DZ : Drizzle

DZ : Algeria (ISO countries Codes)



E : East

ECA : Executive Controller Assistant

ECAC  : European Civil Aviation Conference

ECAC area : European Civil Aviation Conference Area

ECAC Reference Levels : European Civil Aviation

E : Easern Standard Time (Time Groups only)

E : Ending of Precipitation (In minutes Metar)

E : Equatorial (Air Mass)

E : Estimated (Weather reports only)

E : Spain

E/D End-of-Descent

E/O Engine-Out

E+M : signalling

EA : Europe Airsports

EAA : European Aviation Agency

EAC : East Assistant Controller

EACAC : Evolutionary AIR Ground Cooperative ATM Concept

EACG : European ATFM Consultation Group

EACNSISG : EATCHIP Architecture and CNS Infrastructure Sub-Group

EAD SGR : EAD Sub-Group

EAD : Earliest Arrival Date

EAD : European AIS Database

EADCOS : EAD Co-ordination Group

EADI : Electronic Attitude Director Indicator

EADTF : European AIS Database Task Force

EAG : European ATFM Consultation Group and its two Subgroups (Operations and Systems Sub-Group)

EAG : Event Analysis Group

EAIP / EAIP-TF : Electronic Aeronautical Information Publication (Task Force)

EAM : Eurocontrol Airspace Model

EAMG SSG : EAMG Systems Sub-Group

EAMG : European ATFM Management Group (supervision of the CFMU)

EAN : European ATSO Network

EANPG : European Air Navigation Planning Group (ICAO)

EAP : EATCHIP Alignment Process

EARTS : En-Route Automated Radar Tracking System

EAS Equivalent Airspeed

EAS : EUROCONTROL Advisory Service / Division

EAS : European AIS System

EASA : European Aviation Safety Authority (Agency)

EASG : EASIE ATM Support Group

EASIE : Enhanced Air Traffic Management and Mode S Implementation in Europe

EAT : Expected / Estimated Approach Time

EATCFMU : European Air Traffic Central Flow Management Unit

EATCHIP LO : EATCHIP Liaison Officer

EATCHIP OCD : Operational Concept Document

EATCHIP : European Air Traffic Control Harmonisation and Integration Programme (see EATM)

EATCOS : ECAC TF on the Integration of European ATC Systems

EATF : EATMS Architecture Task Force

EATM : European Air Traffic Management Programme (former EATCHIP)

EATMP : The European Air Traffic Management Programme

EATMS : (Future) European Air Traffic Management System

EATN : (European) Experimental Aeronautical Telecommunication Network

EAWDG : EATMS Architecture Workshop Drafting Group

EB : Eastbound

EB : Executive Board (of the EUROCONTROL Agency)

EBAA : European Business Aviation Association

EBCDIC : Extended Binary Coded Decimal Interchange Code

EBP : Emergency Bypass Processor

EC : European Commission

EC : European Community

EC : Executive Controller (also referred to as `Radar Controller')

EC : Eyes closedConference Area Reference Levels

ECAC Strategy : European Civil Aviation Conference Strategy

ECAF : ECAC Centralised Airspace Facility

ECAM : Electronic Centralised Aircraft Monitoring (airbone display)

ECARDA : European Coherent Approach to Research and Technological Development for ATM

ECBAG : EATCHIP Cost-Benefit Advisory Group

ECC : EATCHIP Co-ordination Committee

ECC-AIRS : European Co-ordination Centre for Aircraft Incident Reporting Systems (EC)

ECCG : Experimental Centre Consultation Group

eCE : enlarged Committee for Route Charges

ECEF : Earth-Centered-Earth-Fixed

ECET : End of Civil Evening Twilight

ECG : EATCHIP Communication Gateway

ECHO : EATCHIP CNS/ATM Holistic Model Using RM- ODP

ECHQ : Eurocontrol Headquarters

ECI : EAD Client Interface

ECIP : European Convergence and Implementation Plan

ECIPD : Document ECIP

ECIT : EAD Client Interface Terminal

ECM : EATCHIP Co-ordination Meeting

ECM : Electronic Counter Measure / Message

ECM : Executive Control Message

ECM : Extended Callsign Menu

ECMA : European Computer Manufacturers' Association

ECMT : European Conference of Ministers of Transport

eCN : enlarged Commission

ECON Economy (minimum cost speed schedule)

ECP : Engineering Change Proposal

ECP : Expedite Clearance Procedure

ECR : Event Contract Request (ICAO)

ECRSG : EATMS Concept & Requirements Sub-Group

ECRG : Experimental Centre Review Group

ECS Environmental Control System

ECSC : European Conference on Satellite Communications

ECT : European Coordination Team

ECTF : EATMS Concept Task Force

ECU : European Currency Unit

Ed(s) : Editor(s)

ED50 : European Datum 1950 (Geodetic system)

ED70 : European Datum 1970 (Geodetic system)

ED87 : European Datum 1987 (Geodetic system)

EDA : Electro-Dermal Activity measurement

EDAG : European Delay Analysis System Advisory Group

EDAS : European Delay Analysis System

EDAS : European Delay Analysis System

EDB : Environmental Data Base

EDCT : Expect Departure Clearance Time

EDD / TID : EDD / Touch Input Device

EDD : Electronic Data Display

EDDF : Environmental Data Processing and Distribution Function

EDDUS : EDD Update System

EDD-VKL : EDD-controller/planner-controller

EDI : Electronic Data Interchange

EDIFACT : Electrical Data Interface for Administration Commerce and Transport

EDISOFT : Empresa de Serviços e Desenvolvimento de Software, S.A. (PT)

EDMS : Engineering Data Management System (ODS - MAS)

EDP : Electronic Data Processing

EDP : Environmental Data Processing

EDPD : Environmental Data Processing and Distribution

EDS : Explosives Detection System

EE : Estonia (ISO Country Code)

EEB : European Environmental Bureau

EEC : Electronic Engine Control

EEC : EUROCONTROL Experimental Centre

EEC : European Economic Community

EEC/BSC : Eurocontrol Experimental Centre / Building Steering Committee (decision DG)

EEE : Etudes, Essais and Experimentation

EEG : Electroencephalogram

EEI : Essential Elements of Information

EEPROM : Electrically Erasable Programmable Read-Only Memory

EES : European Eastern States

EET : Estimated Elapsed Time

EFAS : Electronic Flash Approach Light

EFAS : En Route Flight Advisory Service

EFC : Expect(ed) Further Clearance

EFDFMG : EUROCONTROL Flow Data and Flow Management Group

EFDP : European Flight Data Processing

EFIS : Electronic Flight Instrument System

Eff : Effective from (date)

EFL : Entry Flight Level

EFL : Estimated Flight Level

EFMS : Experimental Flight Management System

EFP : España-France-Portugal Plan (co-operation agreement)

EFPD : Extended Flight Plan Description

EFPM : Extended Flight Plan Message

EFPS : External Front Processing System (PALLAS system)

EFQM : European Foundation for Quality Management

EFR : Extended Flight Rules (FREER)

EFS : Electronic Flight Strip

EFS : Extended Flight Store

EFTA : European Free Trade Association

EG : Egypt (ISO Countries Codes)

EGA : Enhanced Graphics Adapter

EGATCM : Eurocontrol Guild of Air Traffic Controllers - Maastricht

EGATS : EUROCONTROL Guild of Air Traffic Services

EGERIA : Engineering Group for European Integration ATC

EGIP : European Gateway for INO Provision

EGNOS : European Global Navigation Overlay Service (SNA)

EGNOS-EM : European Global Navigation Overlay Service - East Mediterranean

EGPWS : Enhanced Ground Proximity Warning System

EGT Exhaust Gas Temperature

EGU : European Gliding Union

EHA : European Helicopter Association

EHD : Danger Area  (followed by identification) [NL]

EHF : Extremely High Frequencies

EHQ : Eurocontrol Headquarters

EHR : Restricted Area (followed by identification) [NL]

EHSI : Electronic Horizontal Situation Indicator

EHT : Extemely High Tension

EI : Air Lingus (airline)

EIA : Electronic Industries Association

EIB : European, Investment Bank

EICAS : Engine Indicating Crew Alerting System

EIF : Extended Interface Function

EIIC : Electronics Installation and Implementation Centre

EIPA : European Institute of Public Administration

EIRP : Effective / Equivalent Isotropic Radiated Power

EIS : Environmental Information Sampling

EIU Electronic Interface Unit

EL : Electro-Luminescent

ELBA : Emergency Location Beacon-Aircraft

EL/KYB : EL Keyboard

ELEV : Elevation (environment)

ELINT : Electronic Intelligence

ELNGT : Elongate

ELM : Extended Length Message

ELR : Extra Long Range

ELS : Electronic Library Service (System)

ELS : Emergency Landing Strip

ELT : Emergency Locator Transmitter

ELW : Extended Label Window

EM : Emission

EMAC : European-Middle East Air Traffic Management Coordination

EMAS : Environmental Management Audit System (Hamburg Airport)

EMBD : Embedded (cumulonimbus) in a layer

EMBDD : Embedded (cumulonimbus) in a layer

EMC : ElectroMagnetic Compatibility

EMCC : EATM Management Coordination Committee

EMCON : Emission Control

END : Stop-end (related to RVR)

EME : Expert militaire d'Eurocontrol

EMER : Emergency

EMERALD : EMErging and Activities of reLevance to ATM concept Definition (European Commission)

EMERG : Emergency

EMEU : Eurocontrol Military Expert Unit

EMF : Exercise Management Facility (Simulator)

EMG : EAD Management Group

EMG : ElectroMyoGram

EMG : Emergency (ICAO)

EMH : EATCHIP Management Handbook

EMI : Electromagnetic Interference

EMIRA : Eurocontrol Maastricht Information Retriever Application

EMIS : EATCHIP Management Information System

EMM : Extractor Monitoring Message

EMOTION 7 : European Maintenance Of TCAS II Logic Version 7.0 (EMOTION 7)

EMP : ElectroMagnetic Pulse

EMS : EATCHIP Management Support

EMS Emergency Medical Services

EMS : European Mobile System

EMSO : EATCHIP Management Support Organisation

EMSS : European Mobile Satellite Services

EMSU : Environment Meteorological Support Unit

EMT : Eye-Movement tracking

EMTO : ECAC Medium Term Objectives Group (to deal with `Constraints to Growth'

EMU : Extended Memory Unit

EN : Euro Norm (CEE)

ENE : East-North-East

ENERN : East-Northeastern (Wx reports only)

ENEWD : East-Northeastward (Wx reports only)

ENG : Engineering / Engine

ENGD : CFMU – Engineering Division

ENHANCE : EuropeaN Harmonised Aircraft Noise Control modelling Environment (NATS-DORA)

ENJJPT : Euro-NATO Joint Jet Pilot Training

ENOC : European Network Operating(tion) Concept

ENPRM : European Notice of Proposed Rule-Making

ENR : En-route (ICAO)

ENRI : Electronic Navigation Research Institute (USA - ADS)

ENRT : En Route

ENV : Environment System

EO : Executive Objectives (EATMS - CSD)

EO : Eyes Open

EOBD : Estimated Off Block Date

EOBT : Estimated Off Block Time

EOC : Edge Of Coverage

EOCD : EATMS Operational Concept Document

EODP : EATMS Options Discussion Paper

EOF : Expected Operations Forecast 

EOG : ElectroOculoGram

EOIG : EGNOS Operators and Infrastructure Group - the ATS providers in the states formerly known as the IKD States

EOLIA : European Pre-operational Datalink Applications Project

EONS : Eurocontrol Open and Generic Graphic System

EOQ : European Organisation for Quality

EP : Expert Panel

EPAC : EATCHIP Policy and Allocation Committee

EPAC : Eurocontrol Programme Appraisal Committee

EPB : EATCHIP Project Board

EPC : Enhanced Planning and Coordination function (project of MDP phase I)

EPCM : Enhanced Planning Control Message

EPD : EATCHIP Planning Division

EPG : EASIE Policy Group

EPHOS : European Handbook for Open Systems

EPIC : European Programme for the Implementation of a Common geodetic reference frame (WGS 84)

EPIC : Extended PCM Interface Controller (ACS)

EPM : EATCHIP Planning Method

EPM : Electromagnetic Protection Modification

EPMB : EASIE Programme Management Board

EPR : Engine Pressure Ratio

EPR, DGS/EPR : External and Public Relations

EPROM : Erasable-Programmable Read-Only-Memory

EPRT : External Processing Response Time

EPS : Exercise Preparation Suite (Simulator)

EPSU : European Public Service Union

EPT : Estimated Parking Time

EPT : Eurocontrol English language Placement Test

Eqpt : Equipment

EQUATOR : Environment for Qualitative Temporal Reasoning (AI)

EQPT : Equipment

ER  : En-Route

ER TC : En-Route Tactical Controller

ERA : European Regional Airlines Organisation

ERABIS : (Swedish) Route Invoicing System

ERATO : En Route Air Traffic Organiser

ERCG : External Relations Coordination Group

ERCS : EXM Resistant Communications System

ERD : End Routing Domain

ERDF : European Regional Development Fund

ERFA : Conference on the Economics of Route Air Navigation Facilities and Airports (ICAO)

ERIP : EAD Remote Interface Package

ERM : En-Route Metering

ERM : Estimate Revision Message

ERN : Earth Referenced Navigation

ERNP : European Radio Navigation Plan (European Commission)

EROPS : Extended Range Operations by Twin-Engine Aircraft

ERP : Effective Radiated Power

ERP : Event-Related Potential

ERP : Extracted Route Points (FPPS/DECADE)

ER-PC : En-Route Planner Controller

ERR : Error Message

ERS : Early Retirment Scheme

ERS : Extracted Route Sequence

ERSS : Eurocontrol Radar Surveillance Standard

ERT : Estimate Revision Message

ERT : Execution Reference Time

ERV : ECM Resistant Voice

ES : Elementary Sector

ES : Emergency System

ES : End Service / System

ES : Eurocontrol Standard (Document)

ES : Spain (ISO Country Code)

ESA : Electronically Scanned Array

ESA : European Space Agency (=ASE)

ESE : East-South-East

ESARR : Eurocontrol Safety Regulatory requirements

ESCAPE : EUROCONTROL Simulation Capability And Platform for Experimentation

ESCAT : Emergency Security Control of Air Traffic

ESCO : Executive Support and Coordination Office

ESDF : Environmental Static Data Processing and Distribution Function

ESDI : Enhanced Small-Device Interface

ESERN : East-Southeastern (Wx reports only)

ESEWD : East-Southeastward (Wx reports only)

ESF : Essential Support Facilities

ESL : Entry Sequence List

ESME : Enhanced Simulation Modelling Environment

ESP : En-route Spacing (Program)

ESPRIT : European Strategic Programme for Research and Development in Inform.Technology

EST : Estimated

EST : Boundary Estimate Message

EST : Estimate message designator

ESTEC : European Space Technology and Research Centre

ESTEEM : Elaboration of a Strategy for the Transition from EATCHIP phase III to the EATMS

ESUP : Eurocat Support System

ET : (Shuttle) External Tank

ET : Executive Task

ETA : Estimated Time of Arrival / Estimating Arrival

ETD : Estimated Time of Departure

ETE : Estimated Time of Entry

ETFDD : Electronic Tabular Flight Data Display

ETFDM : Electronic Tabular Flight Data Message

ETFMS : Enhanced Tactical Flow Management System

ETG : European GNSS Tripartite Group (European Community, Eurocontrol, European Space Agency)

ETL : Extended Track Label

ETMA : Extended Terminal Manoeuvring Area

ETO : Estimated Time Overhead (significant point)

ETOPS : Extended Range Twin Engined Operations

ETOT : Estimated Take Off Time

ETR : ETSI Technical Report

ETRAS : Easy Transported Radar Analysis System

ETREM : Eurocontrol Technical Requirements Model (EAS)

ETRF : European Terrestrial Reference Frame

ETS : Early Termination of Service

ETSI : European Telecommunications Standardi(sation) Institute

ETX End of Transmission

ETX : Estimated Time of Exit

EU : Electronic Unit

EU : European Union

EU-ACA : European Union Airport Coordinators Association (represent more than 120 airports throughout the European Union)

EUCARF : European Central Altitude Reservation Facility

EUM, EUMED, Eumed : Europe Mediterranean Air navigation Region (ICAO)

EUR ANP : Air Navigation Plan in Europe (ICAO Region)

EUR ATN : European ATN

EUR RAN : European Regional Air Navigation (Meeting)

EUR RASC : Regional AIS System Centre inside the ICAO EUR region

EUR : Euro

EUR : European

EUR : European Region (ICAO)

EURACA : European Air Carrier Assembly

EURAM : European Research in Advanced Materials = BRITE

EURAP : European Regional ATS Packet Switching Network (DAKOS+CBN)

EURATN : European experimental Aeronautical Telecommunications Network / Réseau européen de télécommunications aéronautiques

EURET : European Research for Transport (European Communities) ; Specific Resource and Technological Development Programme in the Field of Transport

EURO : Eurocontrol

EURO/5-States RSG : Eurocontrol/5-States Route Structure Group

EUROCAE : European Organisation for Civil Aviation Equipment manufacturers

EUROCAEDS : European Organisation for Civil Aviation Equipment

EUROCONTROL : European Organisation for the Safety of Air Navigation

EUROSIM : Eurocontrol Simulator at the Institute of Air Navigation Services

EUROSTAT : Statistical Office of the European Communities

EUR-RAN : European Regional Air Navigation

EV : Every

EVAS : EATMS Validation Strategy

EVP : EATM Validation Project (formerly C3T)

EVS : Enhanced Visual System

EVS : Evaluation System

EW : Eurowings (airline)

EWA : Error Warning Area

EWAN : EGNOS Wide Area Network

EWBS : EATCHIP Work Breakdown Structure

EWG : Executive Working Group

EWP : EATCHIP Work Programme

EWP : EATM Work Programme

EWP : Enhanced Working Position

EWPA : EATCHIP Work Programme Adaptation

EWPD : EATCHIP Work Programme Document

EWPD : EATM Work Programme Document

EWS : Early Warning System

EWS : Experimental Workstation Simulator

EWT : EATMS Working Team (CSD)

ex GDR : ex German Democratic Republic

EXC : Executive Controller

EXC : Exept

EXEC Execute

EXER : Exercise(s) or Exercising or to Exercise

EXP : Expected

EXPLT : Extrapolate

EXSPEC : Exercise Specification

EXTD : Extend or Extending

extra EUR RASC : Regional AIS System Centre outside the ICAO EUR region

EXTRAP : Extrapolate

EXTRM : Extreme

EXY : Easyjet (airline)



F : Fahrenheit

F : France

F : Fixed

F&CM : Flow And Capacity Management

F/G : Foreground

F18 : Field 18 of Flight Plan

FA : Area Forecasts

FA Final Approach

FA : Course from a Fix to an Altitude (ARINC 424 Path Terminator)

FAA : Federal Aviation Administration

FAA : Federal Aviation Authority

FAA-STD-042 : National Airspace System Open System Interconnection Naming and Addressing (ISO Standards for Open Systems Interconnection and Data Communication published by ISO, International Standards Organisation).

FAATC : FAA Test Centre

FAC : Facilities

FAC : Final Approach Course (same as IS)

FAC : Flight Augmentation Computer

FACC : Feature and Attribute Coding Catalogue

FACF : Final Approach Course Fix

FACTOR : Development of Functional Concepts from the EATMS Operational Requirements

FACTS : Future Area Control Tools Support

FADEC : Full Authority Digital Engine Control

FAF : Final Approach Fix

FAI : Fédération Aéronautique Internationale (F)


Failure The inability of a system, subsytem, unit or part to perform within previously specified limits.

FAF Final Approach Fix

FAL : Facilitation of International Air Transport

FAN : False Alarm Normaliser (radar)

FANOMOS : Flight track and Aircraft NOise MOnitoring System (RMCDE)

FANS : Future Air Navigation Systems (ICAO)

FANS-1 : Future Air Navigation Systems 1, an initial operational datalink package for the South Pacific

FANS-A : Future Air Navigation Systems A, an initial operational datalink package for AIRBUS aircraft

FANSTIC : Future ATS and New Systems Impacts on Cockpit

FAP : Final Approach Point

FAP : Future ATM Profile (simulation Brétigny)

FAR : False Alarm Rate

FAR : Federal Aviation Regulations (federal rules under which flight operations are conducted)

FAR Federal Acquisition Regulation

FARAWAY : Fusion of Radar and ADS Data through two WAY datalink

FAS : Final Approach Segment

FAS : Flight level Allocation System

FASID : Facilities And Services Implementation Document (ICAO)

FAST Final Approach Spacing Tool

FASTER : Future AO-ATM-Airports Synergy Towards Enhanced Operations

FAT : Factory Acceptance Test

FAT : Force Aérienne Tactique

FATAC : French Air Force Tactical Air Command

FATMI : Finnish ATM Integration

FATO : Final Approach and Take-off Area

FATUREC : Federation of Air Transport User Representatives in the EEC

FAWP : Final Approach Waypoint

FAX : Facsimile

FB : FallBack

FBL : Light (used to indicate the intensity of weather phenomena, interference or static reports, e.g. FBL RA = light rain)

FBS : Fall-Back System

FBO : Fixed Based Operator

FBW : Fly By Wire

FC : Course from a Fix to a Distance (ARINC 424 Path Terminator)

FC : Feeder Controller

FC : Formalised Clearances

FC : Frequency Change

FC : Funnel Cloud (meteo) (tornado or water spout)

FCA : Funtional Configuration Audit (MAS - ODS)

FCB : Frequency Coordinating Body

FCC : Federal Committee for Communications

FCC : Flight Control Computer

FCC : Flow Co-ordination Cell

FCD : Flow Control Decision

FCDS : Frequency Channel and Distribution System

FCE : Flow Control Execution

FCG : Financial Consultation Group (AFG)

FCL : Flight Crew Licensing

FCM : Flight Confirmation Message

FCNP : Fire Control and Navigation Panel

FCO : Future Concepts (EATCHIP domain)

FCOM : Flight Crew Operating Manual

FCOT : Future Concepts Team

FCR : Flow Control Request

FCS : Frame Check Sequence (RMCDE)

FCST : Forecast

FCT : Friction Coefficient

FCTL : Flow Control

FCU : Flight Control Unit

FD : Course from a Fix to a DME Distance (ARINC 424 Path Terminator)

Fd : Doppler Frequency

FD : Flight Data

FD : Flight Director

FDA : Flight Data Assistant

FDB : Full Data Block

FDAMS Flight Data Acquisition and Management System

FDC Flight Data Company

FDDI : Fiber Distributed Data Interface (LAN - RMCDE / MAS)

FDDI : Fiberoptical Digital Data Interchange

FDE : Flight Data Exchange

FDE-ICD : Flight Data Entry - Interface Control Document

FDFM : Flight Data and Flow Management

FDFMG : Flight Data and Flow Management Group

FDG : Flight Data Group (MAS)

FDG : Flight plan Data Generator

FDM : Flight Data Message

FDMA : Frequency Division Multiplex Access

FDMAS : Flight Data Management Automated System (It. ATFM)

FDMD : Flight Data Management and Distribution

FDO : Flight Data Operations Division

FDOD : CFMU – Flight Data Operations Division

FDP : Flight Data Processing / Flight-plan Data Processor

FDPD : Flight DATA Processing and Distribution

FDPS : Flight Data Processing System

FDR : Flight Data Recorder (CDB / CFMU)

FDS : Flight Data Section

FDSU : Flight Data Storage Unit

FE : Flight Examiner

FE : tones injected by the Far End switch

FEAST : First European ATCO Selection Test Package

FEATS : Future European Air Traffic (Management) Systems (ICAO)

FEC : Forward Error Correction

FED : Fonds européen de développement

FEDER : Fonds européen de développement régional (= ERDF)

FEP : Front End Processor

FES : Fixed Earth Station

FEW : Few

FF : Fuel Flow

FFA : Functional Failure Analysis

FFAS : Free Flight Airspace

FFI : Final Factory Inspection (CBN - CNG)

FFM : Frankfurt/Main

FFM : Free Flight Mode

FFTF : Future Functions Task Force (4-States/Eurocontrol)

FFU : Fire Fighting Unit

FG : Fog (meteo)

FGS/C Flight Guidance System/Computer

FHA : Functional Hazard Assessment

FI/P : Flight Inspection Permanent

FI/T : Flight Inspection Tempray

FI : CFMU/MSB – Finance Team

FI : Finland (ISO Country Code)

FI : Iceland Air (airline)

FI : Flight Instructor

FIAT : First Installed Article Test

FIB : Forward Information Base

FIC : Flight Information Centre

FIC : Frequency Intercom

FIDS : (Swedish) Flight Information Display System

FIFO : First in, First out

FILTIM : Date and Time Stamp of original Message

FIN : Financial Services

FIN : Finland

FIO : Flight Information Office

FIR : Flight Information Region

FIRST : Flexible Independent Radar Skill Trainer (MAS)

FIS : Flight Information Service

FISA : Automated flight Information Service

FIS-B : Flight Information Service - Broadcast

FISC : Flight Information Services Communications

FISO : Flight Information Service Officer

FIT : Factory Inspection Test

FIT : Flight Integration Task

FIT : Flight Plan Input Terminal

FITAMS : Flight Trials of ATN and Mode S activity

FIW : Flight Input (Information) Workstation

FIX : Fixpoint, Position in space usually on aircraft's flight plan

FL : Flight Level

FLAS : Flight Level Allocation Scheme

FLAS : Flight Level Allocation System

FLCH Flight Level Change

FLD : Field

FLG : Flashing

FLIDRAS Flight Data Replay and Analysis System

FLIP : Flight Information Publication

FLIPCY : Flight Plan Consistency

FLO : ATS/ATFM Co-ordination meeting (ICAO)

FLO : Flow meetings

FLOE : Informal ATS / ATFM Co-ordination Meeting - Europe East

FLOEast : Informal Flow control Meeting - Europe East (ICAO/EANPG)

FLOS : Flight Level Orientation Scheme

FLOW : Informal ATS / ATFM Co-ordination Meeting - Europe West

FLOWest : Informal Flow control Meeting - Europe West (ICAO/EANPG)


FLR : Flares (Parachute flares)

FLS : Flight Suspension Message

FLT : Flight

FLT/PLN : Flight Plan

FLTAB : Flight Level Table

FLTCK : Flight Check

FLUC : Fluctuating or fluctuation or fluctuated

FLTP : Flexible Luxembourg Training Platform

FLW : Follow(s) or following

FLY : Fly or Flying

FM : Course from a Fix to a Manual Termination (ARINC 424 Path Terminator)

FM : Flow Manager

FM : Flight Management

FM : Frequency Management

FM : From

FM…: From (followed by time weather change is forecast to begin)

FMA Flight Mode Annunciator: display on or near the PFDs of the current modes of autoflight system

FMAQ : Flight Management Attitudes Questionnaire

FMC : Flight Management Computer (also FMCS - FMC System)

FMCG : Flow Management Co-ordination Group

FMD : CFMU – Flow Management Division

FMEA : Failure Modes and Effects Analysis

FMECA : Failure Modes, Effects and Criticality Analysis

FMG : Flow Management Group (ICAO)

FMGC : Flight Management and Guidance Computer

FMGS : Flight Management and Guidance System

FMP : Flow Management Planning / Position (CFMU - ECAC States)

FMPG : Flow Management Planning Group

FMS : Flight Management System

FMU : Flight Management Unit

FMU : Flow Management Unit

FN : False Negative

FNA : Final Approach

FNM : Flight Notification Message

FNPT : Flight and Navigation Procedure Trainer

FO First officer

FOC : Full Operational Capability

FOCA : Federal Office for Civil Aviation (Switzerland)

FOCA : Floor of Controlled Airspace

FOM : Figure of Merit (ICAO - ADS)

FOQA Flight Operations Quality Assurance

FOR-DEC : Facts, Options, Risks and Benefits, Decision, Execution and Check

FOU : Frequency of Use

Four-state BFWG : Four-State Budgetary and Financial working Group

FP 5 : Fifth Framework Programme of the European Community for Research, Technological Development and Demonstration

FP : False Positive

FP : Flight Plan

FP : Framework Programme (of the European Commission)

FPA : False Plot Analysis

FPA : Flight Path Angle

FPA : Focal Plane Array

FPAP : Flight Path Alignment Point

FPB : Flight Progress Board

FPCP : Flight Path Control Point

FPD : Flight Plan Data

FPDETF, FPRDETF : Flight Plan related Data Exchange Task Force

FPF : Flight Plan Fallback

FPFS : First Planned First Served

FPL : Filed Flight Plan (ICAO format)

FPL : Full-Performance Level

FPLA : Field Programmable Logic Array

FPLA : CFMU/DEVD - Flight Plan Application Section

FPLMTS : Future Public Land Mobile Telecommunications System

FPM : Feet-per-Minute

FPM : Flight Path Monitor (PATs)

FPM : Flight Position Monitor

FPM : Flight Progress Message

FPP : Flight Plan Processing

FPPS : Flight Plan Processing System

FPPU : Flight Planning and Flight Progress Updating

FPR : Flight Plan Route

FPS : Flight Plan Server

FPS : Flight Progress Strip

FPS : Functional Performance Specification

FPT : Flight Plan Terminal

FPWO : Flight Plan Work Station Operator

FPZ : Flight Path Zone (ODID)

FQIS Fuel Quantity Indicating System

FQR : Formal Qualification Review

FR : France (ISO Country Code)

FR : From

FR : Fuel Remaining

FRA : Failure Reporting and Analysis

FRA : Free Route Airspace

FRA Flap Retraction Altitude

FRA Federal Railroad Administration

FRB : Failure Review Board

FREER : Free Route Experimental Encounter Resolution

Freq : Next Sector frequency

FRF : Further Route of Flight

FRG : Federal Republic of Germany

FRH : Fly Runway Heading

FRM : Financial Resources Management Core Team

FRNG : Firing

FRONT : Front (relating to weather)

FRQ : Frequent

FRS : Functional Requirements Specifications

FRUIT : False Replies from Unsynchronized Interrogator Transmissions ; Friendly Replies Unsynchronized in Time

FRZN : Frozen (meteo)

FS : Foot Switch (VCS

FS : Functional Statement (ICAO - ADS)

FSA : First System Activation (message)

FSD TF : Functional Specification Development Task Force (EASIE/MODE S)

FSF : Flight Safety Foundation

FSK : Frequency Shift Keying

FSL : Full Stop Landing

FSM : Flight Schedule Monitor

FSM : Frequency Shift Modulation

FSP : Flight Strip Printer

FSPEC : Field SPECification : field of variable length, indicating which data fields are present in a record and in which order (see also Record)

FSS : Automated/Flight Service Station

FST : First

ft : Feet

FTC : Fast Time Constant

FTE : Flight Technical Error

FTE : Full Time Employee

FTE : Full Time Equivalent

FTFM : Filed Tactical Flight Model

FTmn : False Track Length Mean

FTO : Flight Training Organisation

FTP : File Transfer Protocol

FTprob : False Track Probability

FTS : Fast-Time Simulation System

FTsd : False Track Length Standard Deviation

FTT : Flight Technical Tolerance

FU : Smoke (meteo)

FUA : Flexible Use of Airspace

FUAG (FUSG) : Flexible Use of Airspace Group (sub- group of APT)

FUCOZOC : Fuel Consumption Estimator in a ZOC

FUSG : Flexible Use of Airspace Sub-Group (Sub-Group of ANT)

FUT, FCO : Future Concepts

FVS : Flight Verification System

FWC : Flight Warning Computer

FX : Field Extension Indicator (ASTERIX)

FY : Fiscal Year

FYP : Five Year Programme

FYROM : Former Yugoslav Republic of Macedonia

FZ : Freezing (meteo)

FZDZ : Freezing Drizzle

FZFG : Freezing Fog

FZRA : Freezing Rain



G/A : Ground to Air

G/G : Ground / Ground

G/T : Gain over noise Temperature Ratio

G : Green

G : Gusts (meteo) 

GA : Garuda (airline)

GA : General Aviation

GA : Go-Around

GAAP : Generally Accepted Accounting Principles

Ga-As : Gallium-Arsenid

GAAS : Generic Approach for ATM Systems

GAC : General Aviation Centre

GACS : Generic ATN Communication Service

GAF : German Air Force

GAFLO : German Air Force Liaison Officer

GAFO : German Air Force Office

GAFOR : General Aviation Forecast (Meteo)

GAIT : Ground-Based Augmentation and Integrity Technique

GAME : GEADGE/ADKAR Message Exchange

GAMET : Area forecast for low-level operations

GAR : Go-Around

GARTEUR : Group for Aeronautical Research and Technology in Europe

GASC : Global Aviation Satellite Communications System

GASR : Group of AGA Safety Regulators (AOT list)

GAT : General Air Traffic or Terminal

GATE : Group of ATM in the Eastern Part of the ICAO EUR Region, including Middle Asia

GB : United Kingdom (ISO Countries Codes)

GBA : Geostationary Broadcast Area

GBAS : Ground Based Augmentation System

GBCC : Ground Based Control Complex

GC : Graphics Controller

GC : Ground Control/Controller

GCA : German Cockpit Association

GCA : Government Quality Assurance

GCA : Ground Controlled Approach

GCAS : Ground-based Collision Avoidance System

GCE : General Certificate of Education

GCL : Graphical Information Category Cursor Line (EAS)

GCS : Ground Control Segment

GCSE : Generate Certificate of Secondary Education

GCST : Group for Coordination of STAR (Studies, Tests and Applied Research)

GCTA : Gestion des Courants de Trafic Aérien (=ATFM)

GCWP : Generic Controller Working Position

GDCA : General Directorate for Civil Aviation (SP)

GDCE : Ground Data Circuit Terminating Equipment

GDLP : Ground Data Link Processor (the Mode S subnetwork function within the ground system that implements the OSI network layer protocols)

GDM : Graphical Information Category Dynamic Maps

GDOP : Geometric Dilution of Precision

GDP : Diplomatic and Protocol Drafting Group

GDP : General Data Processor

GDP : Gross Domestic Product

GDP : Ground Delay Program

GE : Georgia (ISO Countries Codes)

GEADGE : German Air Defense Ground Environment

GEMS : Generic Error-Modelling System

GEN : General

GENOFIC : General North Sea Flight Information Centre

GEO : Geographic or True

GEO : Geostationary Satellite Orbit

GEOREF : Geographical Reference

GOES : Geostationary Operational Environmental Satellite

GEOSTAR : Multipurpose Satellite System Using Fixed Orbit Satellites

GERAC : EANGP WG on Coordination of the Implement & Operation of an Improved EUR AFTN/AFS

GERAC : Group on European Regional AFTN/AFS Implementation and Operation Coordination

GES : Ground Earth Station (ICAO - ADS)

GETALIS : Sistema de Gestão de Tráfego Aéreo de Lisboa (PT) / Future Lisboa Air Traffic Management System

GF : Gulf Air (airline)

GFDI : GNSS Fault Detection and Isolation

GFM : Graphical Information Category Fixec Maps

GGCS : Ground/Ground Communication System (ICAO)

GGDC : Ground/Ground Data Communication

GGDC-SG/GGDCSG : Ground/Ground Data Communications Sub-Group

GGVC-SG/GVCSG : Ground/Ground Voice Communications Sub-Group

GHMI : Ground Human-Machine Interface

GHz : Gigahertz

GIB : Global Navigation Satellite System Integrity Broadcast

GIB : GPS Integrity Broadcast

GIC : Geostationary Integrity Channel

GIC : GNSS Integrity Channel

GICB : Ground Initiated Comm B Protocol (Mode S)

GIPS : Giga Instructions Per Second

GIPS : General Image Processing System

GIPS : Global Initial Positioning System

GIS : Geographical Information System

GLD : Glider

GLONASS : Global Orbiting Navigation Satellite System (USSR)

GLOSS : Global Sea Level Observing System

GLSU : GPS Landing System Unit

GM : Guidance Material

GMC : Ground Movement control

GMD : General Meeting of Directors

GMS : Global Positioning System Monitoring System

GMS : Ground Monitoring System

GMS : Ground Movement Surveillance

GMT : Greenwich Mean Time. See UTC

GMU : GPS (Height) Monitoring Unit

GNC : Global NAVCOM (IATA/ICAO Conference)

GND : Ground Control service / facility

GND : Ground Level

GNDCK : Ground Check

GNE : Gross Navigational Error

GNLS : GNSS Navigation and Landing System

GNLU : GNSS Navigation and Landing Unit

GNP : Gross National Product

GNSS : Global Navigation Satellite System

GNSSP : Global Navigation Satellite System Panel (ICAO)

GOMS : Goals, Operators, Methods, Selection (rules)

GOTV : GNSS Operational Test and Validation

GOVT : Government

GP : Gilde Path

GPIWG : Glide Path Intercept Waypoint

GPS : (Satellite Navigation and) Global Positioning System / Geographical Paging System, a technique for deriving location from space-based assets.

GPS : Geographical (Paging) Positioning System

GPSSU : GPS Sensor Unit

GPTP : Guided Part-Task Practice

GPV : GNSS Performance Validation

GPWS : Ground Proximity Warning System (warns of inadequate separation from ground and excessive sink rate close to ground)

GR : Hail >5mm (meteo)

GR : Greece (ISO Country Code)

GRACE : Geographical Association and Classification of Events

GRADU : Gradual or Gradually

GRAF Ground Replay and Analysis Facility

GRADE : Ground Return Area Digital Eliminator

GRANAS : Global Radio Navigation System

GRASS : Grass landing area

GRIB : Processed meteorological data in the form of grid point values (aeronautical meteorological code)

GRIGRI : Gestures, Recognition on Interactive Graphical radar Images

GROBI : Graphical Object Interface

GROUP SIMUL : Group Simulation

GRP Geographical Reference Points

GRVL : Gravel

GS : Small hail or snow pellets (meteo)

GS : Glideslope

GS : Graphical Station

GS : Ground Speed

GS : Gound Stop

GSA : Guided Skill Acquisition

GSE : Ground Support Equipment

GSFC Goddard Space Flight Center

GSIMUL : Guided Simulation

GSM : Global System for Mobile Communications

GSM : Graphical Information Category Scale Marking

GSNA : Ground-Supported Navigation Advisory

GSO : Geosynchronous Orbit

GSO : Group of Senior Officials

GT : Ground Transmitter

GT2 : Ghost Track rate (radar standard)

GTB : General Tool Box

GTC : Gain Time Control

GTE : Groupe tripartite européen

GtG programme : Gate-to-Gate programme

GTID : Group training - Instructor-dependent

GTIS : Ground-based Traffic Information System

GTMD : Group Training - Material-dependent

GTO : Geosynchronous Transfer Orbit

GTP : Groupe de travail "Pensions" / Pensions Working Group (= PWG)

GTr : Ghost Track Rate

GTRC : General Technical Requirements and Conditions

GTS : Global Telecommunications System

GTVS : Ground based Transponder performance Verification System (SCT)

GUI : Graphical User Interface

GUIDE : General User Interface Device

GW Gross Weight

GWL : Graphical Information Category Weather Lines



H : Helicopter

H : Hungary

H, h : Hour

H24 : Continuous Day and Night Service

H/M/L : High/Medium/Low (ATC Complexity)

HA : Holding to an Altitude (ARINC 424 Path Terminator)

HAA : Height Above Airport

HAC Hughes Aircraft Co.

HAD : Human Aspects Development

HADAMARD : Multi-radar processing written in ADA

HAI Helicopter Association International

HALO : High Altitude, Low Opening

HALS / DTOP : High Approach Landing System / Displaced Threshold Operations

HAMMER : High-level All-purpose Monitoring and Management Equipment for RADNET

HAPI : Helicopter approach path indicator

HAT : Height Above Touchdown

HATR : Hazardous Air Traffic Report

HAW : Horizontal Aid Window (ODID)

HBARO Barometric Altitude

HBN : Hazard Beacon

HBS : Hotline Back-up System

HCA : Human-Centred Automation

HCAA : Hellenic Civil Aviation Authority

HCD : Hard Copy Device

HCI : Human Computer Interface

HCP : Hard Copy Printer

HD : Air Holland (airline)

HD : Harmonisation Documents

HDB : Historical Data Base

HDBK : Handbook

HDD : Head Down Display

HDF : High frequency direction-finding station

HDG : Heading

HDG SEL Heading Select

HDLC : High Level Data Link Communication

HDLC : High Level Data Link Control

HDOP : Horizontal Dilution of Precision

HE : Altitude Error

HED : Heading

HEIDI : Harmonisation of European Incident Definitions Initiative for ATM (SQS)

HEL : Helicopter

HEL : High Energy Laser

HELI : Heliport

HELLANET : Hellenic aeronautical Network

HEO : Highly inclined Elliptical Orbit

HERA : Human Error in ATM

HERAS : Hellenic Radar System

HERMES : Harmonised En-Route Metering and Spacing (Sequencing)

hex : hexadecimal

HF : High Frequency

HF : Holding to a Fix (ARINC 424 Path Terminator)

HF : Human Factors (Modules = HRT)

HFDL : High Frequency Data Link

HFIAI : Human Factors in Incident and Accident Investigation (HRT)

HFS : Human Factors Studies

HFSG : Human Factors Study Group (ICAO)

HFTE : Human Factors Testing and Evaluating

HFX : Holding Fix

Hg : Mercury

HGT : Height or Height Above

HHmm : Hours and minutes

HHMMSS : hour-hour / minute-minute / second-second

Hl : High

HI FI SIM : High-Fidelity Simulator

HIDE : Harmonised, Integrated Development Environment

HIFA : Human Integration in Future ATM Systems

HIPERLAN : High Performance Local Area Network

HIPS : Highly Interactive Problem Solver

HIRL : High Intensity Runway Lights

HIRO : High Intensity Runway Operations

HIRS High-Resolution Infrared Sounder

HIRTA : High Intensity Radio Transmission Area

HIT : Hardware Integration Test (MAS/DFS - ODS)

HIT : Hughes Improved Terminal

HIWAS : Hazardous Inflight Weather Advisory Service

HJ : Sinrise to Sunset

HLD : Hold List

HLDC : High Level Data Link Control

HLDG : Holding

HLLC : High Level Link Layer Control

HLT : Heavy Load Threshold

HM : Holding to a Manual Termination (ARINC 424 Path Terminator)

HMATTF : Handling of Military Air Traffic Task Force

HMD : Horizontal Miss Distance (filter) (TCAS/ACAS)

HMI : Human Machine Interface or interaction

HMR : Helicopter Main Routes

HMT : Hand Microphone Telephones

HMU : Height Monitoring Unit (in connection with RVSM)

HMZ : Slovenian National Hydrometeorological Institute

HN : Sunset to Sunrise

HND : Hand over keyboard button

HNS : Host Nation Support

HNSE : Horizontal Navigation System Error

HO : Service available to meet operational requirements

HOA : Hand-off Acceptance

H-OFF-A : Hand-Off Accept

H-OFF-P : Hand-Off Propose

HOL : High Order Language

HOL : Holiday

HOLD : Hold(ing)

HOOD : Hierarchical Object Oriented Design

HOP : Hand-off Proposal

HOP : Harmonisation of Operational Procedures (AT, CH, DE)

Hor : Horizontal

HOSP : Hospital Flight/Aircraft

Host Computer Facility located at the ARTCC which operates user application software, as well as certain peer network layer protocols required to communicate with adjacent ATN routers.

Host Processor "End system" as defined by ISO that includes the OSI upper layer protocols (i.e., transport layer and above) and application processes

Hp / hPa : hectopascal

HP : High Precision

HP : Holding Pattern

HP : Horse-Power

HPA : High Power Amplifier

HPC : Hughes Programming Centre (NPC)

HPD : Horizontal Polar Diagram

HPRES Pressure Altitude

HPRT : HMI Preview Response Time

HPZ : Helicopter Protection Zone

HQ : Headquarters (EUROCONTROL Agency)

HR : Croatia, Republic of Croatia (ISO Country Code)

HR : Hour

HR : Human Resources

HRA : Human Reliability Assessment / Analysis

HRD : Human Resources Directorate

HRFG : Human Resources Framework Group

HRI : Human resources International (Israël)

HRIS : Human Resources Information System

HRM : Human Resources Management

HRP : Human Resources Planning and Corporate Services

HRPTSG : Human Resource Planning and Training Study Group (ICAO)

HRS : ATM Human Resources Management Programme (EATM)

hrs : hours

HRSC : Human Resources Steering Committee (Training Programme Ab Initio, CC)

HRT : Human Resources Team

HRV : Heart-Rate Variability

HS : Service available during hours of scheduled operations

HS : Headset

HSCT : High-speed Civil Transport

HS-DTS : High Speed Data Transmission System

HSI Horizontal Situation Indicator

HSM : High Speed Modem

HST : Hypersonic Transport

HTA : Hermes Training Aircraft

HTA : Hierarchical Task Analysis

HTD : History Trial Dots

HTI : Human Technology Integration

HTZ : Helicopter Traffic Zone

HU : Hungary, Republic of Hungary (ISO Country Code)

HUD : Head up Display

HUM RES : Human Resources

HUM : Humanitarian

HUM : Human Resources (Domain/Unit)

HUMR : Human Resources

HURCN : Hurricane

HV : Transavia (airline)

HVDF : High and very high frequency direction finding stations at the same location

HVY : Heavy

HVY : Heavy (used to indicate the intensity of weather phenomena)

HW, h/w : Hardware

HWCI : Hardware Configuration Item

HWCI : Hardware Configuration Item (MAS/DFS - ODS)

HWG : Harmonisation Working Group

HWP : Holding Waypoint

HX : No Specific working hours

Hz : Hertz (cycle per second)

HZ : Haze (meteo)



I : Italy

I and Q Channels : In-phase and Quadrature channels

I(Fd) : MTI Improvement Factor

I/A : Incident Analysis

I/O : Input / Output

I/R : Interrogator/Responsor

I²SLS : Improved Interrogation Side Lobe Suppression

IA : Indirect Access

IA Inspection Authorization

IA : International Alphabet

IA/CC : Indirect Access/Common Control

IA-5 : International Alphabet Number 5

IAAE : International Association of Airport Executives

IAC : Instrument Approach Chart

IAC : Integrated Avionics Computer

IACA : International Air Carrier Association

IACH : Individual ATC Flight Plan Changes

IACS : INTERGRAPH Aeronautical Charting System

IACSP : International Aeronautical Communications Service Providers

IAEA : International Atomic Energy Agency

IAF : Initial Approach Fix

IAFP : Individual ATC Flight Plan Proposal

IAG : Interim Airport Group

IAG : International Association of Geodesy

IAIP : Integrated Aeronautical Information Package

IAL : Instrument Approach and Landing (Chart)

IAL : International Air-radio Limited (UK)

IAM : Institute of Aviation Medicine

IAMP : Initial Approach Waypoint

IANS : Institute of Air Navigation Services (Luxembourg)

IANSSC : IANS Steering Committee

IAO : In and out of clouds

IAOA : Indicated Angle-of-Attack

IAOPA : International Council of Aircraft Owner and Pilot Associations


IAR : Intersection of Air Routes

IAR : Instrument Autonomous Rules

IAR, IARTF : Institutional Arrangements and Requirements Task Force

IARR : IFPS ARR Message – Individual Arrival Message

IAS : Indicated Air Speed

IATA : International Air Transport Association

IATTF : IFPS Acceptance Test Task Force

IAW : In accordance with

IAWP : Initial Approach Waypoint

IB : Iberia (airline)

IB : Information (display) Button

IBAA : International Business Aviation Association

IBAC : International Business Aviation Council

IBAP : Industry Based Prototype

IBILS : Integrity Beacon Landing System

IBN : Identification Beacon

IBP : Industry-Based Pre-operational Platform and Validation

IBRD : International Bank for Reconstruction and Development (= BIRD)

IC : (very small) Ice Crystals (meteo) (also know as Diamond dust)

IC : Integrated Circuit

IC : Intercom

ICAA : International Civil Airport Association

ICAAS : Integrated Control in Avionics for Air Superiority

ICAO : International Civil Aviation Organisation

ICARD : ICAO Codes and Route Designator System

ICB : International Competitive Bidding

ICBM : Intercontinental Ballistice Missile

ICCS : Integrated Communication Control System

ICCT : Internal Communications Core Team

ICCU : Intercomputer Communications Unit

ICD : Interface Control Document

ICE : Icing

ICET : IATA Capacity Enhancement Team

ICHG : IFPS Change Message

ICIP : Inital CIP (APT)

ICM : Interline Communications Manual

ICMS : Integrated Control and Monitor System

ICNI : Integrated Communications, Navigation and Identification

ICNL : IFPS Cancellation Message

ICNL : Individual Cancel

ICO : Intermediate Circular Orbit

ICP : Interactive Control Panel

ICP : Internal Clarification Project

ICR : Integrated Cancellation Ratio

ICR : Interactive Conflict Resolution

ICWG : Interface Control Working Group

ICWS : Integrated Control Work Station

ID : Identification (ICAO)

ID : Information Display

IDA : Indirect Access (VCS)

IDA : Initial Distribution Area

IDB : Integrated Database (DBE + DBC)

I-DCTS : Interim Digital (Data) Communications Terminal System

IDENT Identification Identify, Identifier

IDHS : Intelligence Data Handling System

IDMS : Integrated Database Management System

IDP : Initial Domain Part

IDRP : Inter Domain Routing Protocol

IDS : Information Display System

IE : Ireland (ISO Country Code)

IEC : International Electrotechnical Commission/Committee

IEEE : Institute of Electrical and Electronic Engineers (US)

IEP : Information Exchange Programme

IEPR Integrated Engine Pressure Ratio

IES : Interface Editor System

IETF : Internal EATMS Task Force

IF : Initial Fix (ARINC 424 Path Terminator)

IF : Intermediate (approach) Fix

IF : Intermediate Frequency

IFA : Image Frequency Attenuation

IFALPA : International Federation of Airline Pilots Association

IFATCA : International Federation of Air Traffic Controllers Associations

IFATSEA : International Federation of Air Traffic Safety Electronic Associations

IFD : Initial Functional Description / EASIE

IFDS : Interactive Flight Data System

IFE : In-Flight Entertainment

IFIM : International Flight Information Manual

IFF : Identification Friend or Foe

IFFITAF : IFPS-DBE Functional Interface System Task- Force

IFFN : Identification Friend, Foe or Neutral

IFG-NME WG : Implementation Facilitation Group of the National Management Experts Working Group

IFL : Intermediate Flight Level

IFLIPS : Integrated Flight Prediction System

IFOG : Interferometric Fiber Optic Gyro (see FOG)

IFOR : Implementation Forces (UN, NATO)

IFP : Keyword from IFPS used in FIELD 18 to provide a warning

IFPD : Individual Flight Plan Data

IFPL : IFPS Filed Flight Plan

IFPL : Individual Flight Plan Message

IFPO : IFPS Workstation Operaror

IFPPS : Integrated Flight Plan Processing System

IFPRU : IFPS Responsible Unit

IFPS : Integrated Initial Flight Plan Processing System


IFPU1/RPL : CFMU/FDOD - IFPS Unit - Haren Brussels (Belgium)

IFPU2 : Integrated initial Flight Plan Processing System (Unit 2) CFMU/FDOD - IFPS Unit - Brétigny-sur-Orge (France)


IFR : Instrument Flight Rules

IFRB : International Frequency Registration Board

IFTO : International Federation of Tour Operators

IG : Meridiana (airline)

IGA : International General Aviation

IGCN : Independent Ground Communications Network

IGFET Insulated Gate Field Effect Transistor

IGP : Ionospheric Grid Point

IGS : International GPS Reference Network

II : Interrogator Identity

IIMSES : Initial Implementation of Mode S Enhanced Surveillance (a common project UK, France, Germany, Benelux, including POEMS)

IIS : Internal Information System

IISLS : Improved Interrogation Side Lobe Suppression

IKBS : Intelligent Knowledge Based System

IKD States : In Kind Delivery States (France, Germany, Italy, Spain, UK, represented by their ATS providers: DNA, DFS, ENAV, AENA, NATS)

IL : Israël (ISO Countries codes)

ILO : International Labour Organisation / Organisation Internationale du Travail (=OIT)

ILS : Instrument Landing System

ILS : Integrated Logistic Support

ILSP : Integrated Logistic Support Program

IM : Inner Marker

IM : Information Management

IMA : Integrated Modular Avionics (see AIMS )

IMAL : Integrity Monitoring Alarm Limit

IMAWP : Initial Missed Approach Waypoint

IMC : Instrument Meteorological Conditions

IMF : International Monetary Fund

IMG : Immigration

IMM : Interacting Multiple Models : a generally applicable algorithm of track state estimation

IMO : International Maritime Organisation / Organisation maritime Internationale (= OMI)

IMP : Implementation Services

IMPACT : Informal Management Panel for ATC Training

IMPACT : Information Market Policy Actions

IMPACT : Innovative Methodology for the Projection of ATM Concepts onto the Training of ATCOs

IMPACT : Methods and tools to assess IMPACT on future ATM systems

Impl : Implementation

IMPR : Improve or Improving

IMT : Immediate or Immediately

IMTEG : ILS/MLS Transition EUR Group

IMUX : Input MUltipleXer

IN : Inch, Inches

INA : Initial Approach

INBD : Inbound

INC : In Cloud(s)

InCAS : Interactive Collision Avoidance Simulator

INCERFA : Uncertainty Phase

INDEFLY : Indefinitely

IND SIMUL : Individual Simulation

Ind : Industry

INFO : Information

INFR-C : Infrastructure Creation

in.hg. inches of mercury

INI : Initial Approach Controller

INIT Initialization

INM : Integrated Noise Model (software developed by the US FAA, manufacturer: Aerospatiale Matra Airbus)

INMARSAT : International Mobile Satellite Organisation

INO : International NOTAM Operation

INOP : Inoperative

INP : If Not Possible

INPR : In Progress

INR Image Navigation and Registration

Ins : Inches

INS : Inertial Navigation System

INST : Installation

INSTL : Install or Installed or Installation

INSTAR : Institutional Arrangements for European Air Traffic Management

INSTILUX : Eurocontrol Institute of Air Navigation Services (LU)

INSTR : Insturment

Int : International

INT : Interesection

INTC Intercept

INTELSAT : International Telecommunications Satellite Organisation

Interactive : Interactive training

INTERCAUTRA : Internal CAUTRA protocol

INTL : International

INTNET : Integration Network (for flight data exchange)

INTRG : Interrogator

INTRP : Interrupt or Interruption or Interrupted

Intruder : Aircraft against which TCAS issues an advisory

INTSF : Intensify or Intensifying

INTST : Intensity

INU : Inertial Navigation Unit

INV : Innovative Studies and Technological Assessment (ARDEP)

INV : Inverse / Inverted

INWP : Intermediate Waypoint

IO, I/O : Interoperability - Input / Output

IOATF : IFPS Operational Advisory Task Force

IOBD : Initial Off-Block Date

IOBT : Initial Off-Block Time

IOC : Initial Operational Capability

IOCD : Initial Operational Concept Document

IOCP : Internal Operational Clarification Project

IOD : Issue of Data

ION : Institute of Navigation

IOP : Input / Output Processor (RMCDE)

IOR : Indian Ocean Region (ICAO)

IOR : INMARSAT Indian Ocean Region

IOSS : Input Output Sub System

IP : Information Button (mouse)

IP : Information Paper

IP : Internetwork Protocol

IPAG : Intellectual Property Advisory Group (Policy Guidelines for Intellectual Property Rights)

IPAS : Integrated Preparation and Analysis System

IPB : Inner Performance Boundary (Tunnel Concept)

IPC : Illustrated Parts Catalog

IPC : Intermittent Positive Control

IPCC : Intergovernmental Panel for Climate Change

IPPC : Internet Pilot Planning Centre (Norway)

IPG : Integration Project Group

IPL : Initial Programme Loading

IPL : Intermediate Flight Plan

IPR : Intellectual Property Rights

IPRT : Internal Processing Response Time

IPS's : Intellectual Proprietary Rights

IPSE : Integrated Programming Support Environment

IPSky : Internet Technology in the Sky

IPT : Internal Processing Time

IPT Integrated Product Team

IPv6 : Internet protocol version 6

IQ : Intelligence Quotient

IQ : Iraq (ISO countries codes)

IR : Ice on Runway 

IR : Instrument Rating

IR : Infrared

IR : Integrated Receiver

IR : Iran (ISO countries codes)

IR : Iran Airlines (airline)

IRAS : Interactive Radar Analysis System

IREN : Incident Reporting European Network

IRF : Incident Report Form (DECADE)

IRF : Interrogation Repetition Frequency (radar standard)

IRIG : (clock)

IRL : Ireland

IRMA : Intermediate Redesigned MCC Architecture (ESCO/DECADE)

IROI : Instantaneous Return on Investment

IRPL : Internal Repetitive Flight Plan

IRR : Internal Rate of Return

IRS : Inertial Reference System

IRS : Interface Requirements Specification

IRS : Intermediate Route Sequence (FPPS/DECADE)

IRT : Interrogation Repetition Time

IRU : Inertial Reference Unit – part or IRS

IRVR : Instrument Runway Visual Range

IS : Iceland (ISO Country Code)

IS : Interface Specification

IS : Intermediate System

ISA : Inertial Sensor Assembly - part of IRS

ISA : Innovative Slot Allocation

ISA : Instantaneous Self-Assessment

ISA : International Standard Atmosphere

ISB : Independent Sideband

ISDN : Integrated Services (switched) Digital Network (=RNIS)

ISDU : Inertial System Display Unit

IS-ES : Intermediate System - End System

ISL : Intermediate Supplementary Flight Level

ISLS : Interrogation Side Lobe Suppression

ISO 10737 : Transport Layer Management (Standards For Open Systems Interconnection And Data Communication Published by ISO)

ISO 7498-3 : Basic Reference Model Part 3 : Naming And Addressing (Standards For Oven Systems Interconnection And Data Communication Published By (ISO)

ISO 8072 : Transport Service Definition (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 8073 AD 1 : Connection-Oriented Transport Protocol Addendum 2 : Class Four Operation Over Connectionless Network Service (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 8073 : Connection-Oriented Transport Protocol Specification (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 8208 : International Organisation for Standardisation

X.25 Packet Level Protocol for Data Terminal Equipment Document.

ISO 8326 : Basic Connection-Oriented Session Protocol Specification (Standards For Open System Interconnection And Data Communication Published By ISO)

ISO 8327 : Basic Connection-Oriented Session Protocol

Specification (Standards For Open Systems Interconnection And Data Communication Published By IS0)

ISO 8348 AD 1 : Network Service Definition, Addendum 1 : Connectionless Mode Transmission (Standards For Oven Systems Interconnection And Data Communication Published By ISO)

ISO 8348 : Network Service Definition (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 8473 : Protocol For Providing The Connectionless- Mode Network Service (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 8649 : Service Definition For The Association Control Service Element (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 8650 : Protocol Specification For The Association Control Service Element (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 8822 : Connection-Oriented Service Definition (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 8823 : Connection-Oriented Presentation Protocol (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 8878 : International Organisation For Standard Use Of X25 To Provide OSI (Open Systems Interconnection) Connection Mode Network Services (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 9000 : International Standards For Quality Management, 1990

ISO 9072-1 : Remote Operations - Part 1 : Model. Notation And Service Definition (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 9072-2 : Remote Operations - Part 2 : Protocol Specification Version (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 9545 : Protocol For Providing The Connectionless- Mode Network Service (Standards For Oven Systems Interconnection And Data Communication Published By ISO)

ISO 9595 : Common Management Information Service Definition (Standards For Open Systems Interconnection And Data Communication Published By ISO)

ISO 9596 : Management Information Protocol - Part 1 : Specification (Standards For Oven Systems Interconnection And Data Communication Published By ISO)

ISO : International Standards Organisation / Organisation internationale de normalisation

ISOL : Isolated

OSI : Open System Interconnexion

ISPACG : Informal South Pacific ATS Co-ordination Group

ISQMS : Integrated Safety and Quality Management System (Safety Domain)

ISR : Independent Standby Radio

ISS : Implementation Support Services ; Implementation Support to States

ISS : Indirect sub-System

ISSS : Initial Sector Suite System (FAA)

IST : Indirect Support Task

IT : Information Technology

IT : Italy (ISO Country Code)

ITA : Integrated Task Analysis (of ATCOs)

ITA : International Telegraph Alphabet

ITA-2 : International Telegraph Alphabet Number 2

ITAEG : Information Technology Advisory Expert Group (Standardisation, EPD - CEN/CENELEC/ETSI)

ITAM : Integrated Task Analysis Methodology

ITF : International Transport Workers Federation

ITI : Italian Interface

ITID : Individual Training- Instructor-dependent

ITIRS : International Terrestrial Reference System

ITM : Intermediate Approach controller

ITMD : Individual Training - Material-dependent

ITR : International Transit Route

ITSTC : Information Technologie Steering Committee

ITT : Invitation Property Rights

ITU WARC-95 : International Telecommunication Union World Radio Conference

ITU : International Telecommunications Union

ITU-T : International Telecommunications Union - Telephone

IUCM : IFPS Unit Configuration Manager

IVR : Immersive Virtual Reality

IVSI : Instantaneous Vertical Speed Indicator

IVSN : Initial Voice Switched Network

IWGE : International Working Group on (air) Exercises

IWP : Intermediate Waypoint



JAA : Joint Aviation Authority (consists of 29 ECAC National Aviation Authorities)

JAA AMC : JAA Acceptable Means of Compliance

JAA OPS : Joint Aviation Authorities Operations Committee

JAAB/JAA-B : Joint Boards

JAAC/JAA CE : JAA Committee

JAARC : JAA Research Committee

JAC : Joint Airmiss Committee (UK)

JACC : Joint Area Control Centre

JAL : Japan Air Lines

JAMC : Joint Airspace Management Cell (UK)

JAR : Joint Aviation Requirements

JAR :Joint Airworthiness Regulations

JAR : Joint Airworthiness Requirement

JAR-OPS : Joint Airworthiness Requirements Operations

JATO Jet Assisted Takeoff

JD TF : Job Description Task Force

JIT : Joint Implementation Team (chaired by Eurocontrol) (ESCO) MADAP/KARLDAP

JL : Japan Air Lines (airline)

JMCT : Job Management Consultative Team [job analysis]

JOINT : Joint Operational Incidents Training

JOT : Joint Operational Team (ESCO)

JP : Japan (ISO Country Code)

JPDA : Joint Probabilistic Data Association

JPEG : Joint Photographic Expert Group

JSP : Joint Services Publication

JSRA Joint Sponsored Research Agreement

JST : Joy Stick

JTIDS : Joint Tactical Information Distribution System

JTST : Jet Stream

JU : JAT – Yugoslavian Airlines (airline)

JURG : Joint Users' Requirements Group (Eurocontrol Representative' in the IATA/AEA)




K : Thousend

K, k : Symbol for kilo (103)

KAR : Karlsruhe

KARLDAP : Karlsruhe Automatic Data Processing and Display System

KB : Kilo Byte

Kbps : Kilobits per second

KBS : Knowledge-Based System

KCAS : Calibrated Airspeed expressed in Knots

KDS : Keyboard Display System (Station)

KE : Kenya (ISO Country Code)

KE : Korean Airlines (airline)

KECU : Thousands of European Currency Units

KfV : Kuratorium für Verkehrssicherheit (AT) / The Austrian Traffic Safety Board

KG : Kilogram

Khz : KiloHertz

KIAS : Knots Indicated Air Speed

KIDS : Karlsruhe Interim DCTS

KIS : Keyboard Input Station

KL : KLM – KLM Cityhopper (airline)

KLDAP : KARLDAP + Langen (D)

KLM : Royal Dutch Airlines

KLOC : thousand lines of code

km, KM : kilometer

KM : Air Malta (airline)

Km/h ,KMH : kilometers per hour

KNMI : Koninklijk Nederlands Meteorologisch Instituut (NL)

/ Royal Netherlands Meteorology Institut

KOX : Karlsruhe Operational Exchange

kPa : KiloPascal

KPA : Key Performance Area (PRC)

KPI : Key Performance Indicator

KPT : Karlsruhe Planning Team

KR 20 : A measure of the internal consistency, or homogeneity, or scalability, of a test material (Ferguson, 1976).

KR : Knowledge of Result

KSA : Knowledge, Skills, Abilities

KSAO : Knowledge, Skills, Abilities, and Other personal requirements

KT/KTS : knots (i.e. 1 NM/hour)

KTD : Keyboard Tabulator Display

KU : Kuwait Airways (airline)

KUAC : Karlsruhe Upper Aispace Control Centre

Kurtosis : A term which refers to the flatness or peakedness of one distribution in relation to another (Ferguson, 1976).

KW, kW : Kilowatt

KYB : Keyboar

KZ : Nippon Cargo Airlines (airline)




l : Liter

L : Left (also: runway identification)

L : Locator

L : Luxembourg

L : Tones injected by the local switch

L/T : Long-Term

LA : LAN Adapter

LA : Local Action

LAA : Local Airport Advisory

LAA : Local Area Argumentation

LAADR : Low Altitude Airway Departure Route

LAAS : Local Area Augmentation System

LACK : Logical Acknowledgement

LACK : The positive logical response message used for air/ground data communications, as defined within the ICAO Manual for ATS Data Link Applications

LAD : Look Ahead Display

LADGNSS : Local Area Differential GNSS

LADGPS : Local Area Differential Global Positioning System

LAF : Local Adaptation Functions

LAHSO : Land and Hold Short Operations

LAM : Ljubljana ATC Data Processing System

LAM : Logical Acknowledgement Message

LAM : The positive logical response message used for ground/ground data communications, as defined within the Eurocontrol Standard for On-Line Data Interchange

LAMPS : Long Term ATCO Manpower Planning Simulation

LAN : Inland

LAN : Local Area Network

LANDA : Logistics and Administration

LANSU : Local Air Navigation Service Unit (DFS)

LAP-B : Link Access Procedure (Protocol type B)

LAR/LRR : Long Range Radar

LARS : Lower Airspace Radar Service

LAS : Last Assigned Landing Slot

LAS : Lower Airspace Sector

LASER : Light Amplification by Stimulated Emission of Radiation

LASKA : Learning And Skills Acquisition

LAT : Latitude

LATC : Local Air Traffic Control

LATCC : London Air Traffic Control Centre

LATCO : Licensing of Air Traffic Control Officers (ICAO Study Group)

LAU : Local Approach Unit

LAWRS : Limited Aviation Weather Reporting Station

LB : Pounds (weight)

LB : Local Battery (circuits)

LC : Local Control

LCC : Lifetime Cycle Costing

LCD : Liquid Cristal Display

LCG : Load Classification Group

LCIPD : Local Convergence and Implementation Programme Document / Document CIP local

LCM : Late Change (modification) Message (designator)

LCN : Load Classification Number

LCN : Local Communications Network

LCTD : Located

LDA : Landing Distance Available

LDA : Localizer Type Directional Aid

LDAH : Landing Distance Available Helicopter

LDB : Limited Data Block

LDG : Landing

LDGNSS : Local Differential Global Navigation Satellite System


LDI : Landing Direction Indicator

LDT : Logistic Delay Time

Lect : Lecture

LED : Light Emitting Diode

LEFCO : Project for the procurement of new ATM facilities in Nicosia ACC

LEFD : Local Essential Flight Details

LEN : Lenght

LEO : Low Earth Orbit

Lesson : Lesson / Demonstration

LF : Late Filer LF : Later Filter

LF : Low Frequency

LFA : Local Flying Area

LFC : (Swedish) Air Defence Centre or (unit)

LFHB : Low Flying Handbook

LFL : Last (reported) Flight Level

LFP : Low Pass Filter

LFPP : Limited Flight Plan Processing

LFR Low-frequency Radio Range

LFS : Low-Fidelity-Simulation

LFU : Late Filer and Udater

LFV : Luftfartsverket (CAA of Sweden)

LGT : Light or Lighting

LGTD : Lighted

LH : Left Hand (turn)

LH : Lufthansa (airline)

LHCP : Left Hand Circular Polarisation

LHR : London Heathrow (UK)

LIDAR : Light Detection and Ranging

LIDO : Lufthansa Integrated Dispatch Operation

LIFR : Low Instrument Flight Rules

LIH : Light Intensity High

LIL : Light Intensity Low

LIM : Light Intensity Medium

LIM : Limit

LIM/MID/RAN : Limited Middle East Regional Air Navigation Conference (ICAO)

LIP : Light-pen

LIP : Limited Installation Program (e.g. TCAS)

LIRL : Low Intensity Runway Lights

LISREL : Linear Structural Relations

LIW : Label Input Window

LLC : Link Layer Control

LLC : Logical Link Control (RMCDE)

LLC-I : Logical Link Control - Class I

LLM : L-band Land Mobile

LLT : Low Light Television

LLTR : Low Level Transit Route

LLWAS : Low Level Windshear Alert System

LLZ : Localizer (part of an ILS system)

LM : Compass Locator at ILS Middle Marker

LM : Low/Medium ATC Complexity

LMM Compass locator at the middle marker

LMO : Leadership Management and Organisation

LMT : Local Mean Time

LNA : Low Noise Amplifier

LNA/DPLX : Low Noise Amplifier/Diplexer

L-NAV : Lateral Navigation (provides computer description of aircraft's planned lateral flight path that can be tracked by the autoflight system; lateral path can be shown on map display.)

LNG : Long (used to indicate the type of approach desired or required)

LNO : Olno (Belgium sector indication)

LO : Local Oscillator

LO : Locator Outer

LO : Low

LoA : Line of Action

LOA : List of Abbreviations

LoA, LOA : Letter of Agreement ; Letter of Offer and Acceptance

LOC : Lines of Communications

LOC : Localiser Beam

LOC : Local or Locally or Location or Located

LOE : Line Oriented Evaluation

LOFT : Line-Orientated Flight Training

LoL : Loss of Licence

LOM : Compass Locator at the Outer Marker

LON : Longitude

LONG : Longitude

LOP : Local Operating Procedure

LOPAR : Low Powered Acquisition Radar

LORAN : Long Range Navigation (electronic pulse system for oceanic navigation)

LORAN-C : A hyperbolic grid navigation system

LOS : Level Safety

LOS : Line of Sight

LOS : Line-Oriented Simulation

LO : LOT Polish Airlines (airline)

LOW : Lower airspace

LR : Linear Regression

LRC : Legal ReCording

LRC : Legal Requirement Cell

LRC Long Range Cruise

LRG : Long Range

LRL : Local Recording Logistics

LRM : Line Replaceable Module

LRM : Logical Rejection Message

LRN : Long Range Navigation

LRR : Long Range Radar (SRE)

LRS : Local Route Sequence

LRU : Line Replaceable Unit

LRU : Lowest Replacable Unit

LRW : Long Range Warning

LS : Loudspeaker

LSA : Logistic Support Analysis

LSAS : Longitudinal Stability Augmentation System (MD- 11)

LSB : Least Significant Bit

LSC : Life Support Cost (Cyprus)

LSI : Large Scale Integration

LSP : Loud Speaker

LSR : Loose Snow on Runway(s)

LSRRTI : Leningrad Scientific Research Radio Technical Institute

LSS : Lightning Sensor System

LT : Left Turn

LT : Local Time

LT : Lithuania (ISO Country Code)

Lt : Sequence Time Requirement

LTD : Limited

LTF : Licensing Task Force

LTIOV : Latest Time Information of Value

LTM : Local Traffic Management

LTM : Long Term Memory

LTOG : Long Term Objectives Groups (EASIE, PHARE, FEATS, COPS etc)

LTP : Landing Threshold Point

LTP : Legal and Technical Panel

LTSS : Long Term Systems Studies

LTT : Landine TeleTypewriter

LTV : Load Threshold Values

LU : Late Updater

LU : Luxembourg (ISO Country Code)

LUG : Leerdam Users' Group

LUGS : Link up Glons-Semmerzake

LUX : Luxembourg (ISO countries Code)

LV : Laser Vision

LV : Latvia (ISO Country Code)

LV : Light and Variable (related to wind)

LVA : Large Vertical Aperture

LVB : Luchtverkeersbeveiliging (RLD-NL)

LVE : Leave or Leaving

LVL : Level

LVL CHG : Level Change

LVP : Low Visibility Procedures

LW : Landing weight

LWG : Licensing Work Group

LX : Crossair (airline)

LY : El Al Israel Airlines (airline)

LYR : Layer or Layered

LZ : Balkan Bulgarian Airlines



M:M : Many-to-Many relationship

M : Mach Number  (followed by figures)

M : Manual Tuned NAVAID

M : Million

M : Modules (replaceable)

M : Symbol for Mega (10+6)

m : Symbol for milli (10-3)

m. : meter

m : Nautical mile (preceded by figures)

m/sec : Metres per second

M/ASI : Mach/Airspeed Indicator

M/T : Medium-Term

MA : Malev Hungarian (airline)

MA : Member Association

MA : Message Assurance

MA : Morocco (ISO Countries Codes)

MAA : Maximum Authorized IFR Altitude

MAC : Management Advisory Committee

MAC : Mean Aerodynamic Chord

MAC : Medium Access Control (RMCDE)

MAC : Message for the Abrogation of Coordination

MAC : Mid-Air Collision

MAC : Military Airlift Command

MACC : Manchester Area Control Centre

MACC : Military Area Control Centre

MACE : Multi-criteria analysis for Concept Evaluation

MACEN : Mando Centra

MACS : Multiple Access Communications System

MAD : Model of Activity for Design

MADAP : Maastricht Automated Data Processing and Display System

MADREC : Maastricht Data Recording

M-ADS : Modified Automatic Dependent Surveillance (ICAO)

MAESCAPE : Eurocontrol Simulation Capability and Platform for Experimentation tailored to Maastricht UAC requirements

MAESTRO : Means to Aid Expedition and Sequencing of Traffic with Research and Optimization

MAG : Magnetic

MAHF : missed Approach Holding Fix

MAHWP : Missed Approach Holding Waypoint

MAINT : Maintenance

MALS : Medium Intensity Approach Light System

MALSF : Medium Intensity Approach Light System with Sequenced Flashers

MALSR : Medium Intensity Approach Light System with Runway Alignment Indicator Lights

MAN : Manual Message

MAN : Metropolitan Area Network

MANACT : Manual Activation message

MANTEA : Management of Surface Traffic in European Airports

MAP : Aeronautical Maps and Charts

MAP : Mapping

MAP : Military Assistance Program

MAP : Missed Approach

MAPPER : Maintaining, Preparing & Producing Executive Reports

MAPt : Missed Approach Point

MAR : At Sea

MAR : Mode A Reconstructor

MARAS : Middle Airspace Radar Advisory Service

MARRES : Manual Radar Return Exploitation System

MARS : Maastricht Reserve System

MARS : Military Air Route Structure

MARSA : Military Authority Assumes Responsibility for Separation of Aircraft

MART : Message Acknowledge Response Time

MARTOS : MADAP Real-Time Operating System

MAS (UAC) : Maastricht Upper Area Control Centre

MAS : Manage Airspace

MAS : Manual Assume of Control Message

MAS : Manual A1 Simplex

MAS : Message Assurance Service

MAS : Middle Airspace

MAS : Military Agency for Standardisation

MAS : Multiple Access Store

MASAW : Minimum Safe Altitude Warning

MASI : Mach Airspeed Indicator

MASOR : Military Area Services Operations Room

MASP : Minimum Aviation Specification Performance

MASPS : Minimum Aircraft System Performance Specification (ICAO) ; Minimum Aviation System Performance Standards

MASS : Multi-Aircraft Simplified Simulator

MAST 4 : 4 States Integration and Maastricht Development Steering Group

MAST : Multi-Aircraft Simulation Terminal

MAT : Mackinnon Aerospace and Training

MAT : Message Acknowledge Time

MATCC : Military ATC Centre

MATE : Multi-Aircraft Training Environment

MATIAS : Magyar (Hungarian) Automated and Integrated Air Traffic Control System

MATO : Military Air Traffic Operations

MATRAC : Military Air Traffic Radar Control Centre

MATS : Manual of Air Traffic Services

MATSE : ECAC Transport Ministers' Meeting on the Air Traffic System in Europe

MATWP : Missed Approach Turning Waypoint

MATZ : Militairy Aerodrome Traffic Zone

MAU : Modular Avionics Unit

MAV : Medium Access Control

MAWP : Missed Approach Waypoint

MAX : Maximum

MAX CLB : Maximum engine thrust for two-engine climb

MAX CRZ : Maximum engine thrust for two-engine cruise

MAZ : Mini ASCAP-ZKSD Coupling

MB : Mega Byte

Mb : Millibars

MB : MariBor

MB-II : Multibus II (RMCDE)

MBA : Micro Burst Alert (used to warn of a loss of 30 knots or more associated with convective activity)

MBO : Management by Objectives

Mbps : Mega Bits per second

MBR : Mittel-Bereich radar

MBST : Microburst

MC : Magnetic Compass

MC : Magnetic Course

MC : Main Computer

MC : Monaco (ISO Countries Code)

MCA : Minimum Crossing Altitude

MCC : Maintenance Coordination Center

MCC : Main Computer Complex (Maastricht)

MCC : Military Control Centre

MCC : Mission Control Centre

MCC : Multi Crew Cooperation

MCDU : Maintenance and Control Display Unit

MCDU : Multi-Function Control and Display Unit (part of FMS)

MCDU : Multi-purpose Control and Display Unit (ACARS)

MCE : Management Centre Europe (seminars/courses)

MCF : Manning Calculation Formula

MCG : Maastricht Co-ordination Group

MCG : Minimum Climb Gradient

MCH : Modified Cooper-Harper rating scale for system workload assessment

MCMG : Military Committee Meteorological Group

MCP : Management Control Point

MCP : Mode Control Panel (pilots' interface to the autoflight system; usually located centrally just below cockpit glare shield)

MCS : Master Control Station

MCS : Monitoring and Control System

MCS : Multi-Aircraft Cockpit Simulator

MCSG : Military Committee Staff Group

MCT : Maastricht Co-ordination Team

MCW : Modulated Continuous Wave

MCT : Maximum Continuous Thrust

MCTR : Military CTR

MCU : Main CWP-Unit

MCU : Modular Concept Unit (Spitzer)

MCU : Minimum Configuration Unit

MCU : Modular Component Unit

MD : Moldova (ISO Country Code)

MD : McDonnell-Douglas

MDA : McDonnell-Douglas Aerospace

MDA/H : Minimum Descent Altitude/Height

MDAU : Maintenance Data Acquisition Unit

MDCN : Military Diplomatic Clearance Number; for military aircraft

MDD : Meteorological Data Distribution (function)

MDF : Main Distribution Frame

MDF : Medium Frequency direction-finding Station

MDH : Minimum descent Height

MDI : Manage Document Inputs

MDI : Minimum Departure Interval

MDL Multipurpose Data Link

MDP : Maastricht Development Plan

MDP : MADAP Data Processor

MDS : Management Document Storage

MDS : Minimum Detectable Signal

MDT : Mean Down Time

ME : Multi Engine

MEA : Minimum En-route Altitude (ICAO)

MEB : Main Earthing Bar

MECA : Model for the Economical evaluation of the Capacities of the ATM system

MECO : Main Engine Cutoff

MECU : Millons of ECU

MED : Medium

MEDLL : Multipath Delay Lock Loop

MEF : Maximum Elevation Figures

MEF : Minimum Essential Facilities

MEFISTO : Modelling, Evaluating and Formalising Interactive Systems using Tasks and Interaction Objectives

MEG : Magnetoencephalography

MEHT : Minimum eye height over threshold (for visual approach slope indicator system)

MEI : Multi Engine Instructor

MEL : Minimum En-route Level

MEL : Minimum Equipment List

MEMPAC : CBT on Memory, Perception, Cognition and Attention

MEO : Medium Earth Orbit

MEP : Multi Engine Piston

MES : Mobile Earth Station

MET : Meteorological or request METAR

MET : Meteorological (office)

MET : Multi-Engine Turbo-Prop

MET/AIS : Meteorological and Aeronautical Information processing System

METAR : Aviation Routine Weather Report

METAR : Meteorological Aerodrome Report

METAR : Meteorological Aviation Routine Weather Report / Actual Report

MEURO : Millions of EURO

MF : Manning Factor

MF : Medium Frequency

MF : Metering Fix

MF : Multiplication Factor

MFA : Message Format Area

MFAL : Major Functional Areas List

MFC : Multi-Frequency Coding (telephone system)

MFC/LB : Multi-Frequency Coding / Local Battery

MFD : Multi Function Display

MFDA : Military Flight Data Assistant

MFL : Military Flight List

MFLOPS : Million Floating Point Operations per Second

MFPU : Mobile Field Processing Unit

MFS : Message from Shanwick

MFUR : Most Frequently Used route

MGC : Main Graphics Controller

MGT : Management

MGV : Miss Generation Volume

MH : Magnetic Heading

MH : Malaysia Airlines (airline)

MHDF : Medium and high frequency direction-finding station (at the same location)

MHRS :Magnetic Heading Reference System

MHS : Message Handling Service

MHT : Multi Head Tracking

MHT : Multi Hypothesis Technique

MHVDF : Medium, high and very high frequency direction- finding station (at the same location)

Mhz : Megahertz

MI : Shallow (meteo)

MIB : Management Information Base

MIC : Microphone (VCS)

MICAM : Military Code Allocation Method

MID : Mid-point (related to RVR)

MID : Middle-East Region (ICAO) / Moyen-Orient

MIDAS : Man-machine Integration Design analysis System

MIDAS Multi-discipline Data Analysis System

MIDS : Multi-Function Information Distribution System

MIF : MTI Improvement Factor

MIFG : Shallow fog

MIG : Mikojan - Gurevich

MIL : Military

MILATCC : Military Air Traffic Control Centre

MILE : Multiple Integrated Laser Engagement System

MIL-HDBK : Military Handbook

MILREP : Military Representation

MILSATCOM : Military Satellite Communications

MILSPEC Military Specifications

MIL-STD : Military Standard

MIN : Message Identification Number

min : minutes

MIN : Minimum

MINIT : Minutes in Trail. A specified interval between aircraft expressed in time

MINIPLN : Set of Flight plan related information provided by an FPPS to an ARTAS Unit, used for track labelling

MINLINEUP : Minimum time to line-up for take-off

MIO : Military Sector Input Operator

MIP : Multinational Information Production

MIPS : Million Instructions per Second

MIR : Master Inspection Record

MIRACULIX : Multi Interface Radarformat Calculator and User Line Information Exchange

MIRL : Medium Intensity Runway Lights

MIS : Management Information Service/Systems User

MIS : Management Information System

MIS : Manual Input Station

MIT : Miles in Trail. A specified interval between aircraft expressed in nautical miles.

MITRE : Massachusetts Institute for Technology, Research and Engineering

MIW : Message In Window

MK : Macedonia (ISO Country Code)

MKR : Marker Radio Beacon

MLD : Military Liaison Division

MLDT : Mean Logistic Down Time

MLA : ManeuverLimited Altitude

MLE : Landing Gear Extended Placard Mach Number

MLS : Microwave Landing System

MLW: Maximum Landing Weight

MM : Mental Model

MM : Middle Marker

mm : Millimetre

MMEL : Master Minimum Equipment List

MMI : Man-Machine Interface. See HMI

MMIL : Martin-Marietta International Link

MMO : Main Meteorological Office

MMO : Mach Max Operating

MMOC : Martin-Marietta Overseas Corporation

MMPI : Minnesota Multi-phasic Personality Inventory

MMR : Multi-Mode Receiver

MN Magnetic North

MNC : Major NATO Commander

MNCC : Multinational Coordination Centre

MNM : Minimum

MNPS : Minimum Navigation Performance Specification

MNPSA : Minimum Navigation Performance Specification Airspace

MNS : Mobile Network Services

MNT : Mach Number Technique

MNT : Monitor, Monitoring, or Monitored

MNTN : Maintain

MNWG : Multi-national Working Group

MOA : Memorandum of Agreement

MOA : Militairy Operating Area

MOB : Mobile

MOC : Memorandum of Co-operation

MOC : Minimum Obstacle/Obstrucion Clearance (required)

MOCA Minimum Obstruction Clearance Altitude

MOCBITE : Maastricht Operational Computer Based Information, Training and Examination System

MOD : Ministry of Defence

MOD : Moderate (used to indicate the intensity of weather phenomena, interference or static reports e.g. MOD RA = moderate rain)

MOD : Modified/Modification

Mode S Type of secondary surveillance radar (SSR) equipment which provides Mode A and Mode C interrogations, discrete address (Mode S) interrogations from the ground or air, and a data link capability

MODIS Moderate-resolution Imaging Spectrometer

MoF : Minister of Finance

MOF : Mode of Flight

MOGAS : Motor Gasoline

MON : Above Mountains

MON : Centre of Expertise Monitoring

MONA : Monitoring Aids

MONA User : Monitoring Aids User

MOPS : Minimum Operational Performance Standards (Specifications) / FAA

MOR : Military Operational Requirements

MORS : Mandatory Occurrence Reporting Scheme

MOS : Minimum Operating Standard

MOS : Minimum Operating Strip

MOSD : Mission, Objectives and Strategy Document

MOT : Ministry of Transport

MOT&E : Multinational Operational Testing and Evaluation

MOTNE : Meteorological Operational Telecommunications Network Europe

MOU, MoU : Memorandum of Understanding

MOUSES, MOUSES TF : Mode S Operational Use of Enhanced Surveillance Task Force

MOV : Move or Moving or Movement

MOW : Message Out Window

MOX (-B) : Maastricht Operational Telephone Exchange (version B)

MP : Manpower Planning

MP : Maintenance Program

MP : Martinair (airline)

MP : Mental Picture

Mp : Microprocessor

MPa : Maximum Tyre Pressure Allowable

MPA : Maritime Patrol aircraft

MPA : Military Planning Assistant

MPA : Multi Pilot Aircraft

MPC : Message Processing Centre

MPC : Military Planning Controller

MPDR : Medium Powered Doppler Radar

MPEG : Moving Pictures Expert Group

MPH : Statute Miles per Hour

MPL : Mini Flight Plan

MPO : Maastricht Project Office

MPO : Management Project Office

MPR : Medium Powered Radar

MPR : Swedish National Board for Measurement and Testing

MPRT : Menu Preview Response Time

MPS : Meters per Second

MPW : Maximum Possible Weight

MPS / MPSG : Manpower Planning Sub-Group

MPs : Manpower Planners

MPS : Minimum Performance Specification

MP-SEC : Management Planning System Evaluation and Control

MPT : Minimum Performance Transponder

MPX : Multiplex (Transmission)

MRA : Military Reserved Airspace

MRA : Minimum Reception Altitude

MRC : Military Radar Controller

MRC : Monitoring and Remote Control

MRCA : Multirole Combat Aircraft

MRDP : Multi Radar Data Processing

MRDPS : Multi Radar Data Processing System

MRDV : Multi Radar Daten Verarbeitung / Multi-Radar Processing System

MRG : Medium Range

MRI : Master Record Index (MAS - ODS)

MRK : Marker (RLB)

MRL : Minimum Risk Level

MRM : Minimum Required Manoeuvre (OCD)

MRP : ATIS/MET Reporting Point

MRRP : Minimum Risk Routing Point

MRS : Monitoring and Ranging Stations

MRSA : Mandatory Radar Service Area

MRT : Mean Response Time

MRT : Monitoring R/T, an ACM service message

MRT : Multi Radar Tracking

MRTS : Multi Radar Tracker and Server (System)

MRT-VU : Multi Radar Tracking using Variable Update

MRU : Projekt Marknadsföring Rekrytering Urval och Utbildning (SE) / Project for marketing, recruitment, selection and training for ATCO students, in Sweden

MRVA : Minimum Radar Vectoring Altitude

ms : millisecond

MS : Egypt Air (airline)

MS : Minus

MSA : Minimum Safe/Sector Altitude

MSAS : MTSAT Satellite Based Augmentation System

MSAW : Minimum Safe Altitude Warning

MSB : CFMU – Management Support Bureau

MSB : Most Significant Bit

MSC : Maastricht Steering Committee

MSC : Meteorological Services Communication

MSC : Miscellaneous Simulation Facility

MS-DTS : Medium Speed-Data Transmission System

MSF : Master Simulation Facility

MSG : Manpower Sub-Group

MSG : Message

MSGDLP : Mode S Ground Data Link Processor

MSGSUM : Message Summary

MSGTXT : Message Text

MSK : Minimum Shift Keying

MSL : Mean Sea Level

MSP : Mode S Specific Protocol

MSP : Multi-sector planning

MSRT : Mean Services Restoration Time

MSS : Message Storage System

MSSA : Message Switching System

MSSR : Monopulse Secondary Surveillance Radar

MST : Multiple Sensor Tracking

MSTU : Multiple Stagger Trigger Unit

MSU : Management Storage Unit

MSU : Mode Select Unit

MSUP : Military SUPervisor

MT : Malta (ISO Country Code)

MT : Mountain

MTA : Military Training Area

MTAC : Multiple Time Around Clutter

MTAT : Multiple Time Around Targets

MTBCF : Mean Time Between Critical Failures

MTBF : Mean Time Between Failures

MTBR : Mean Time Between Removals

MTBUR : Mean Time Between Unscheduled Removal

MTCA : Medium Term Conflict Alert / Assistance (ODID)

MTCD : Medium Term Conflict Detection

MTCDR : Medium-Term Conflict Detection and Resolution

MTCEP : (Short) & Medium Term Capacity Enhancement Plan

MTD : Mean Down Time

MTD : Micro Tabular Display

MTD : Moving Target Detection

MTF : Modulation Transfer Function

MTI : Moving Target Indicator

MTMA : Major TMA

MTN : Mega Transport Network

MTOM : Maximum Take-Off Mass

MTOW : Maximum Take-Off Weight

MTP : Medium Term Plan

MTPA : Mobile Transponder Performance Analyser

MTR : Military Training Route

Mtraq : Multi track quality

MTS : Manoeuvrable Target Simulator

MTS : Memory Time Switch (ACS)

MTSAT : Multi-Functional Transport Satellite

MTTF : Mean Time To Failure

MTTR : Mean Time To Repair (CBN - CNG)

MTTRlru : Mean Time to repair LRU

MTTRp : Mean Time to repair product

MTTRsru : Mean Time to repair SRU

MTU : Master Trigger Unit

MTU : Metric Units

MTW : Mountain Waves

MTWA : Maximum take-off Weight Authorized

MU : Management Unit (ACARS)

MU : Mu Meters

MUAC : Military Upper Area Control (Centre)

MUD : Mud

MUDPIE : Multiple User Data Processing Interactive Environment

MUNI : Municipal

MURATREC : Multi Radar Track Reconstruction (System)

MUSAC : Multiple Switching and Confirming (VCS)

MUT : Mean Up Time

MUX : Multiplex

MVDF : Medium and very high frequency direction-finding station (at the same location)

MVE : Move

MVFR : Marginal Visual Flight Rules

MW : Megawatt

MW : Microwave link

mW : Milliwatt

MWA : Message Warning Area

MWO : Meteorological Watch Office

MWP : Meteorological Working Position

MWP Meteorological Weather Processor

MWT(A) : Mean Waiting Time, Administrative

MWW : Upper Wind and Temperature Forecast (message)

MX : Mixed type of ice formation (white and clear)

MXCOP : MADAP Exit Co-ordination Point

MXFL : MADAP Exit Flight Level



N : Neper

N : North

N : No distinct tendency (in RVR during previous 10 minutes)

n : Symbol for nano- (10-9)

N1 : Engine low pressure rotor speed

N90 : New York Tracon

N/A : Not Applicable

N/C : Not Comparable

NA : National Administration

NA : Not Available

NA : Not Authorized

NABS : National Augmentation Broadcast System

NAC : North Atlantic Council

NACA National Advisory Committee for Aeronautics

NACMA : NATO Agency for Air Command and Control System Management

NADC : NATO Air Defence Committee

NADGE : NATO Air Defence Ground Environment

NADIN : National Airspace Data Interchange Network

NADIN II National Airspace Data Interchange Network II (the national digital message switching network for aeronautical data)

NAEW & C : NATO Airborne Early Warnings (and Control)

NAFTA : North American Free Trade Agreement (Canada, US, Mexico)

NAGU : Notice Advisory to GLONASS Users

NAI : Non Automated Initiation

NAIA : New Athens International Airport

NAIS : Norwegian Aeronautical Information System

NAK : Negative Acknowledgement (ICAO)

NALLA : National Long Lines Agency

NAM : North America Region (ICAO)

NAMC : National Airspace Management Cell

NAME : Nadge - ADMAR Message Exchange

NAMILCOM : NATO Military Committee

NAMSA : NATO Maintenance and Supply Agency

NAMSO : NATO Maintenance and Supply Organization

NANU : Notice Advisory to NAVSTAR Users

NAP : National Associated Programmes

NAR : North American Route System

NARDS : Norwegian Automatic Dependent Surveillance

NARFA : National Radio Frequencies Agency

NARG : Navigation Aids and Area Navigation Group (ICAO - EANPG)

NARSIM : NLR ATC Research Simulator

NAS : National Airspace System

NAS : Naval Air Station

NAS National Aircraft Standard

NAS : Network Administration System (DAKOS, FFM / RAPNET - MAS UAC)

NASA : National Aeronautics and Space Administration (US)

NASA RTLX : NASA Raw Task Load indeX

NASA TLX : NASA Task Load indeX

NASC : National AIS System Centre

NASPAC : National Airspace Performance Analysis Capability

NAS-Plan : National Airspace Plan

NAT  : North Atlantic Tracks

NAT ADS : North Atlantic Automatic Dependent Surveillance

NAT ATMG : North Atlantic Air Traffic Management

NATCA National Air Traffic Controllers Association

NAT CADAG : North Atlantic Communications Automation and Data Link Applications Group

NAT CMA : North Atlantic Region Central Monitoring Agency

NAT IMG : North Atlantic Implementation Management Group

NAT MWG : North Atlantic Mathematicians Working Group

NAT OPS MNG : North Atlantic Operations Managers Meeting

NAT RSSIG : North Atlantic Reduced Separation Standard Implementation Group

NAT SPG : North Atlantic Systems Planning Group (ICAO)

NAT VSIG : North Atlantic Vertical Separation and Implementation Group

NAT NAM : North Atlantic / North America (ICAO Regions)

NATCON : North Atlantic Concept

NATINAD(S) : NATO Europe Integrated Air Defence (System)

NATMC : NATO Air Traffic Management Committee (former CEAC)

NATN : (Swedish) National Aeronautical telecommunications Network

NATO : North Atlantic Treaty Organisation

NATS : National Air Traffic Services (UK)

NATSPG : North Atlantic Systems Planning Group (ICAO)

NAT-TFG : North Atlantic Air Traffic Forecasting Group

NAV : Navigation

NAV-1 : Radar Data System (Portugal)

NAVAID : Navigation(al) Aid

NAVDB : Navigation Data Base

NAVSAT : Navigation Satellite

NAVSEP : Navigation and Separation Specialist Panel

NAVSTAR : Navigation Satellite Timing and Ranging System

NB : Northbound

NBAA National Business Aircraft Association

NBFR : Not Before

NBO : (in a NOTAM) N: Indicates for immediate attention of aircraft operators, B: for inclusion in PIB's and O: Operationally significant for IFR flights.

NC : No Change

NC : Non-Critical

NC : Normally Connected

NCAA : NATO Civil Aviation Authority

NCAA : Norwegian Civil Aviation Authority

NCAB : National Civil Aviation Board

NCAIC : National Civil Aviation Information Centre

NCCA : No Clearance to Civil Aircraft

NCD : No Computed Data

NCD : Nil Cloud Detected (Metar Auto - The NCD group reports that there has been Nil Cloud Detected by the cloud sensor )

NCIPD : National CIP Documents

NCMS : Network Channel Management Station

NCN : Non Compliance Notification

NCOP : Entry Coordination Point

NCS : Navigational Computer System

NCS : Network Communication System

NCS : Network Control System / Station (CBN - CNG)

NCW : Non Conformance Warning

ND : Navigation Display

ND : Network Digit (CCITT X.121 Structure)

NDA : National Distribution Agency

NDA : Next Data Authority (ICAO)

NDB : Nav Data Base

NDB : Non-Directional Beacon

NDE : Node Processor

NDS : Non-Deviation Status

NDS : Nuclear Detection System

NDV : No Directional Variation (Metar Auto - only one visibility meter per site, there is No Directional Variation reporting capabilty )

NE : North-East

NEAN : North European ADS-B Network

NEAP : North European Application Project

NEB : Northeast Bound

NECP : Entry Coordination Point

NEG : No or Negative or permission not granted or that is not correct

NEGATIVE RA : RA applying maximum vertical rate (eg don't descend > 500 ft/min)

NEI : Noise Exposure Index

NERC System : New En-Route Centre System (UK)

NERC : New En-Route Control Centre (UK)

NERS :  North Atlantic European Routeing Scheme

NES : Navigation Ground Earth Stations

NESDIS National Environmental Satellite, Data, and Information Service

NET : Network Entity Title

NETCAP : Network Capacity (simulator)

NET-TF : Circuit Provisioning and Network Management Task Force

NEWCTOT : New Calculated Take-Off Time

NEWEOBD : New Estimated Off-Block Date

NEWEOBT : New Estimated Off-Block Time

NEWETOT : New Estimanted Take-Off Time

NEWPTOT : New Provisional Take-Off Time

NEWRTE : New Roure

NEXRAD : Next Generation Weather Radar

NF : Noise Figure

NFDC : Natianal Flight Data Center (USA)

NFL : Entry Flight Level (Re-Entrant Flight)

NFPPDS : National Flight Plan Processing System

N-FRG : Northern Federal Republic of Germany

NFS : Network Filing System

NGATM New Generation Air Traffic Manager

NGT : Night

NHIP : Nordic Harmonisation and Integration Programme

NIK : Nicky VOR

NIL : None or I have nothing to send to you

NIM : Navigational Integrity Monitoring (ICAO)

NIMA : National Imagery and Mapping Agency (of the US Department of Defence (DOD)

NIT : Nordic Implementation Team

NJRASA : Northern Joint Radar Advisory Service (UK)

NL : the Netherlands (ISO Country Code)

NL : Network Layer

NLA : New Large Aircraft

NLC : Netherlands Aviation College(NL) / Nederlands Luchtvaart College

NLES : Navigation Land Earth Station

NLM : Nederlandse Luchtvaart Maatschappij (airline)

NLM Network Loadable Module

NLR : Nederlands Lucht- en Ruimtevaart Laboratorium (NL) / National Aerospace Laboratory

NLT : Not Later Than

NM : Negotiation Manager (PATs)

NM : North Marker

nm, NM : Nautical Mile (1.852 m)

NMAC : Near Mid-Air Collision

NMC National Meteorological Center

NMC : Network Management Centre (Cell) (RAPNET / MAS UAC / DAKOS)

NME/ad hoc : Ad Hoc Working Group of National Management Experts

NMIL : Nieuw Milligen

NML : Normal

NMR : Nautical Miles Radius

NMR : National Military Representative

NMS : Navigation Management System

NMS : Network Management System / Switch

NMU : Navigation Management Unit

NNE : North-North-Eeast

NNW : North-North-West

NO : Norway (ISO Country Code)

NOAA : National Oceanic and Atmospheric Administration

NOAA : New Optimised Approach for ATSM Workshop

NOC : Network Operation Centre

NODE : NATS' Operational Display Equipment

NOF : NOTAM Office

NOG OA&M : NOG Operations, Administration & Maintenance Subgroup (CNG - CBN)

NOG : Northern Telecom Network Operator's Group (CNG - CBN)

NOG-FSG : NOG Features Subgroup (CNG - CBN)

NOMAS : NOTAM Management System (NL)

NONSTD : Nonstandard

NOPT : No Procedure Turn Required

NORAC : No Radio Contact

NORDO : No Radio (Aircraft without radio)

NOS : National Ocean Service

NOS : Network Operating System

NOSIG : No Significant Change (Used in trend-type landing forecasts)

NOTAM : Notice to Airmen ( A notice containing information concerning the establishment, condition or change in any aeronautical facility, service, procedure or hazard, the timely knowledge of which is essential to personnel concerned with flight operations)

NOTAMN : New Notam

NOTAMR : Notam Replacing another Notam

NOTAMC : Notam Cancelling another Notam

NP : Network Protocol

NPA : Non Precision Approach

NPDU : Network Protocol Data Unit (RMCDE)

NPL : Night Plan

NPO KIP : [Russian]. Scientific Production Organization ; Scientific Production Institute of Space Device Building

NPO PM : [Russian]. NPO Prikladnoi Mekhaniki (RU) Scientific Production Institute for Applied Mechanics

NPO : Scientific Production Organization [Russian]

NPRM : Notice of Proposed Rule Making (FAA)

NPV : Net Present Value

NPV : Non-Precision Approach procedure with Vertical Guidance

NR : Noise Rating

Nr. : Number

NRF : NATS Research Facility

NRH : No Reply Heard

NRL : (US) Naval Research Laboratory

NRP : North Reference Pulse

NRP : National Route Plan/Program

NRZ : Non Return to Zero (RMCDE)

NRZI : Non Return to Zero Inverted (RMCDE)

ns : Nanosecond

NS : Navigation Separation

NS : Next Sector

NS : Nimbostratus

NSAP : Network Service Access Point

NSC : New Scottish Center

NSC : No signifant clouds (meteo)

NSC : Notice to Airmen Selection Criteria

NSD : Navigational Status Display

NSDU : Network Service Data Unit

NSE : Navigation System Error

NSM : Network System (Sensor) Manager

NSSG : Navigation and Separation Sub-Group

NSSR : Next/New Secondary Surveillance Radar Code

NSTB : National Satellite Test Bed

NSVN : NATO Secure Voice Network

NSW : No significant weather (meteo)

NSWC : Naval Surface Warfare Centre

NT : Northern Telecom (RMCDE)

NTAP : Notice to Airman Publication

NTE : Not to exceed

NTM F/T SIM : Nattenheim Fast Time Simulation

NTN : Network Terminal Number (CCITT X.121 Structure)

NTRY : Entry

NTSB : National Transportation Safety Board (US)

NUA : Network User Address

NUDET : Nuclear Detection

NVFR : VFR by night

NW : North-West

NW : Northwest Airlines (airline)

NWB : Northwest Bound

NWS : National Weather Service

NXRPT : Next Reporting Point

NXT : Next

Nl : Engine Revolutions per Minute (percent)



O/R : On Request

O/T : Other Times

O : Oceanic

OA : Olympic Airways (airline)

OAC : Oceanic Area Control Centre

OACA : Office of Airports and Civil Aviation / Office des Aéroports et de l'Aviation Civile

OACC : Oceanic Area Control Centre

OAG : Official Airlines Guide

OAS : Obstacle Assessment Surface

OAS : Oceanic Automation System (ICAO - ADS)

OASIS : Oceanic Area System Improvement Study

OASIS : Open Architecture for Simulation Systems

OASIS : Open ATC System Integration Strategy (OCD)

OASIS : Operational Application of Special Intelligence Systems

OASYS : Obstacle Avoidance System

OAT : Operational Air Traffic

OAT : Outside AirTemperature

OATS Orbit and Attitude Tracking

OBA : Off-Bore Sight Angle

Obj. : Objective in CIP

OBR : Obnova Radiolomunikaci (YU) / Renewal of Air- Ground Communications

OBS : Organisational Breakdown Structure

OBS : Observe or Observation Status

OBSC : Obscured, Obscure, or Obscuring

OBST : Obstacle, Obstruction

OBSTL : Obstrucion Lights

OBT : Off Block Time

OBTEX Offboard Targeting Experiments

OC : Object Correlator

OCA : Oceanic Control Area

OCA : Obstacle Clearance Altitude

OCAP : Out of Control Action Plan

OCC : Operations Control Center

OCC : Occulting (light)

OCD : Operational Concept Document for the EATCHIP Phase III System Generation

OCH : Obstacle Clearance Height

OCL : Obstacle Clearance Limit

OCL : Oceanic CLearance delivery

OCNL : Occasional or Occasionally

OCM : Oceanic Clearance Message

OCP : Obstacle Clearance Panel

OCP : Operational Computer Programme

OCR TF : Operational and Certification Requirements Task Force

OCR : Operational and Certification Requirements

OCR : Optical Character Recognition

OCS : Obstacle Clearance Surface

OCS : Operational Control Segment

OCT : Onward Clearance Time

OCT : Operational Control Terminal (VCS)

OCTF : Operation Concept Task Force

OCU : Operational Conversion Unit

OCV : Operational Coverage Volume

OCX : New Object similar to VBX

OD : Organisation and Development (Unit attached to the Director General)

ODA : Open Document Architecture

ODAPS : Oceanic Display And Planning System

ODAPS Operational OGE Data Acquisition and Patch Subsystem

ODAX : Name of military exercises

ODC : Office of Defence Cooperation

ODETE : On-line Data Exchange Terminal

ODF : Oceanic Development Facility (ICAO)

ODIAC, ODIAC-TF : Operational Development of Initial Air/Ground Data Communications Task Force

ODID : Operational Display and Input Development

ODIF : Open Document Interchange Format

ODIN : (Swedish) Briefing System (AIS)

ODP : ATM Operational Requirements & Data Processing

ODS : Operational Display System (ESCO)

ODS : Operator input and Display System

ODT : Operational Requirements and Data Processing Team

ODU : Output Distribution Unit

OECD : Organisation for Economic Co-operation and Development (= OCDE)

OEM : Original Equipment Manufacturer

OFAC : Office Fédéral de l'Aviation Civile (CH) / Federal Office for Civil Aviation (=FOCA)

OFFPDR : Off Predetermined Route

OFIR : Oceanic FIR

OFIS : Operational Flight Information System

OFL : Off-Line

OFS : Ordered Field Sequencing

OFST Lateral Offset Active Light

OGC : Open Geospatial Consortium

OGE Operational Ground Equipment

OGM : Objectives > Goals > Mission

OH : Operational Handbook

OHD : Overhead

OHP : Over Head Projector

OHTF : Operational Harmonisation Task Force

OIDS : Operational Information Display System

OIS : Obstacle Identification Surface

OIS : OGE Input Simulator

OJT : On-the-Job Training

OJTI : On-the-Job-Training Instructor

OK : Czech Airlines (airline)

OL : Operating Location

OLDI : On-Line Data Interchange

OLDI : On-Line Data Interchange (automation in ATC)

OLDINA : OLNO, Diekirch, Nattenheim (Nattenheim area)

OLDISP : OLDI Specialist Panel

OLEVAT : On Line Exercise of Validation of Aircraft Trajectories

OLR : Off Load Route

OLS : Off Line System

OM : Operations Manual

OM : Outer Marker

OMC : Operational Monitoring Complex ; Operational Monitoring Cell (ACAS, AIG Sub-group)

OMD : Operational Management Domain

OMG : Operational Monitoring Group (ACAS)

OMI : Organisation Maritime Internationale / International Maritime Organisation (=IMO)

OMS : On-board Maintenance System

ONC : Operational Navigation Charts

ONL : On-Line

ONP : Open Network Provision (Telecommunications)

OO : Skywest Airlines (airline)

OA : Object Oriented Analysis

OOD : Object Oriented Design

OOOI : Out (Departure Block Time)-Off (Take-off)-On (Landing)-In (Arrival Block time)

OOP : Object Oriented Programming

OOP : Operational Outline Programme

OOR : Outline Operational Requirement

OP : Operational (issues)

OP : Organizational Productivity

OPA : Opaque, white type if ice formation

OPADD : Operating Procedures for AIS Dynamic Data

OPAL : Optimization Platform for Airports, including Landside

OPC : The control indicated is operational control

OPD : Operational Procedures Document (EAD)

OPB : Outer Performance Boundary (Tunnel Concept)

OPIF : Operator Interface

OPLAN : Operational Plan

OPM : Office of Personnel Management

OPM : Operational Position Management

OPMET : Operational Meteorological Information

OPN : Open or Opening or Opened

OPN : Operational Planning Notes (MADAP-KARLDAP)

OPR : Operator or Operate or Operative

OPR : ATM Operational Requirements (EATCHIP Domain)

; ATM Working Rules and Operational Requirements

OPS : Operational Services, Centre of Expertise EEC

OPS : Operations

OPS : CFMU/FMD – Operations Section

OPSEC : Operational Security

OPSP : Operations Panel

OPSroom : Operations Room

OPT : Operational Testing

OPT Optimum

O-QAR Optical Quick Access Recorder

OQPSK : Offset Quadrature Phase Shift Keying

OR : Operational Requirement

ORA : Operational Research and Analysis Group

ORCAM : Originating Region Code Assignment Method

ORD : Indication of an Order

ORGMSG : Original Message

ORGN : Original

ORGRTE : Original Route

ORIG : Original

ORD : Operational Requirements Document

ORM : Operational Reply Message

ORMAQ : Operation Room Management Attitudes Questionnaire

ORQ : D-OTIS Request Message

ORs : Operational Requirements

ORSG : Operational Requirements Sub-Group

ORT : Owner Requirements Table

ORTF : Operational Requirements Task Force

OS : Australian Airlines (airline)

OSC : Operations Steering Committee

OSCAR : Orbiting Satellite Carrying Amateur Radio

OSD : Operational Scenarios Document

OSF : Open System (Software) Foundation

OSF : Open System Foundation

OSG : Operational Services Group (MAS)

OSI Open Sytem Interconnection (ISO defined communications architecture used in data link to permit heterogeneous data communication systems to be interconnected in order to allow the reliable exchange of messages without regard to the implementation of the networks and physical media through which the messages pass)

OSIE : OSI Environment

OSM : CFMU/ENGD - Operational Systems Management Section

OSR : CFMU/URB - Operational Systems Requirements Team

OST : Operational Support Traffic

OSV : Ocean Station Vessel

OTD : D-OTIS Delivery Message

OTD : Operational Target Date

OTD : Other Training Device

OTF (VHF-OTF) : Operational VHF Task Force

OTF : Operational Task Force

OTF : Operational, Technical and Financial Working Group

OTF/BFWG : Combined Operational, Technical/Budgetary & Financial Working Group

OTFP Operational Traffic Flow Planning

O-TGS : ODS - Target Generation System

OTH (R) : Over The Horizon (Radar)

OTLK : Outlook (used in SIGMET for volcanic ash and tropical cyclones)

OTP : On Top

OTP : Overall Test Plan

OTR : Operational Turn Around

OTS : Oceanic Track System

OTS : Off-The-Shelf

OTS : Organized Track System

OTS : Out of Servide

OTSG : Operational Training and Selection Group

OTT : D_OTIS Termination Message

OTV : Orbital Transfer Vehicle

OU : Croatia Airlines (airline)

OUR : CFMU Operational User Requirements (FORM)

OUTB : Outbound

OUMSESTF : Operational Use of Mode S Enhanced Surveillance Task Force

OUNS : Operational Navigation System

OURASIE : Ourasie Toolkit : software X-windows toolkit built above Xt Intrinsics layer (CENA in-house product)

OV : Estonian Air (airline)

OV : Overseas National Airways

OVC : Overcast (meteo)

OVR : Over

Own : TCAS II equipped aircraft - source of TCAS event



P… : Prohibited Area

P : Prefix (CCITT X.121 Structure)

P : Procedure-Required Tuned NAVAID

P&H : Press and Hold (mouse)

P,R,D Area : Prohibited, Restricted, or Danger Area

P.ACCs : Pairs of ACCs

p.t.t : Push-to-Talk

PA : Participating Area

PA : Single Pilot Aircraft

PA : Precision Approach

PA : Pressure Altitude

PA : Provisional Acceptance

PAA : Plot Accuracy Analysis

PABX : Private Automatic Branch eXchange

PAC : Pacific Region (ICAO)

PAC : Preliminary Activation message

PAD : Packet Assembler Disassembler

PAEW : Personnel and Equipment Working

PAK : Pilot Acknowledgement (service)

PALLAS : Phased Automation of the Hellenic ATC System (new Greek ATC System)

PALS : Precision Approach Lighting System (specify category)

PAM : Pilot Acknowledgement Message

PAM : Program for Analysis of MADAP

PAMCS : Panel on Air Space Management and Control Systems


PAMS: Published AIP Management Systerm

PANS : Procedures for Air Navigation Services

PANS-OPS : Procedures for Air Navigation Services - Aircraft Operations

PANS-RAC : Procedures for Air Navigation Services - Rules of the Air and Air Traffic Services

PAPI : Precision Approach Path Indicator

PAQ : Position Analysis Questionnaire

PAR : Planning, Analysis and Reporting

PAR : Precision Approach Radar

PARADISE : Prototype of an Adaptable and Reconfigurable ATM Demonstration and Integration Simulator Environment

PARI method : Precursor, Action, Result, Interpretation Method

PARI : Precursor, Action, Result, Interpretation

PARL : Parallel

PARZOC : Parabolic Approximation of Aircraft Performance for use in a ZOC

PAT : Pattern

PAT : Provisional Acceptance Testing (CNG - CBN)

PATA : Polish Air Traffic Agency

PATCG : PHARE Advanced Tools Co-ordination Group

PATCHWORK : Polish ATC Harmonisation Work programme (EAS)

PATCO : Professional Air Traffic Controllers Association

PATN : PHARE experimental Aeronautical Telecommunication Network

PATROCLOS : Peripheral Airports Terminal Radars, ODS and Centrally Linked Operations System

PATs : PHARE Advanced Tools

PATWAS : Pilot Automatic Telephone Weather Answering Service

PAU : Primary Authorised User

PAX : Passengers

PAWES Performance Assessment and Workload Evaluation

PB : Project Board

PBD Place Bearing/Distance (way point)

PBE : Peripheral Bus Extender (CBN - CNG)

PBL : Problem-Based Learning

PBRA : Plot Based Resolution Analysis

PC : Personal Computer

PC : Planning Controller ; Provisional Council (Eurocontrol)

PCA : Physical Configuration Audit

PCB : Printed Circuit Board

PCC : Peripheral Computer Complex

PCC : Planning Co-ordination Controller

PCC : Polygone Co-ordination Centre

PCC : Project Co-ordinating Committee (PETAL)

PCCB : Program Change Control Board (FPPS/DECADE)

PCD : Personal and Career Development

PCD : Planning Controller Display

PCD : Probability of Code Detection

PCD : Proceed or Proceeding

PCFL : Preferred Cruise Flight Level

P-channel : Packet Mode Channel

PCI : Permanent Commission for Investigation (on ATS incidents) ; Permanent Committee of Inquiry

PCI : Protocol Control Information

PCIP : Pilot Conversion and Implementation Plan

PCL : Pending and Coast List

PCL : Pilot Controlled Lighting

PCL : Procedure Changeover Lines (IFF)

PCM : Planning Co-ordination Message

PCM : Pulse Code Modulation

PCMP : Project Configuration Management Plan (MAS - ODS)

PCMT : Plan Commun à Moyen Terme / Common Medium-Term Plan (=CMTP)

PCN : Pavement Classification Number

P-Code : Precise/Protected Code

PCP : Project Control Plan

PCPU : PCM Central Processing Unit (VCS)

PCR : Periodic Contract Request (ICAO)

PCR : Post Conference Report

PCR : Problem Change Request

PCS : Process Control System

PCT : Planning Control Theory

PCV : Probability of Code Validation

PCX : A window compatible BIT format

PD : PHARE Demonstration

PD : Plan Display

PD : Pointing Device

PD Profile Descent

Pd, Pdet : Probability of detection

PD/1 : PHARE Demonstration 1

PD/1+ : PHARE Demonstration 1+

PD/1++ : PHARE Demonstration 1++

PD/2 : PHARE Demonstration 2

PD/2+ : PHARE Demonstration 2+

PD/3 : PHARE Demonstration 3

PDA : Planning Co-ordination Message Display Area

PDA : Plot Detection Analysis

PDB Performance Data Base 

PDC : Peripheral Device Controller

PDC : Pre-Departure Clearance (message)

PD-Channel : Packet Data Channel

PDES : Pulse Doppler Elevator Scan

PDF : Percentage of Delayed Flights (Delay Parameter Abbreviations)

PDG : Procedure Design Gradient

PDME : Precision Distance Measuring Equipment

PDN : Public Data Network

PDOP : Position Dilution of Precision

PDP : Polar Diagram Plotter

PDR : Pre-Determined Route

PDR : Preliminary Design Review

PDRP : Problem Detection and Resolution

PDS : Programme Development System 

PDTWG : Plot Data Transmission Working Group

PDU : Power Distribution Unit

PDU : Protocol Data Unit (RMCDE)

PE 90 : Parameters of Earth, 1990. Russian Geodetic System

PE : Processor Element (CBN - CNG)

PE : Protected Earth

PE : Ice Pellets

PEA : Parameter and Environment Assembler

PEC : Pressure Error Correction

PED : Primary Engine Display

PEL : Planned Entry Level (to a sector or volume of airspace) (ODID)

PELA : Proficiency test in English Language for ATCOs

PEM : Phone Emergency Module

PENS : Pan-European Fixed Network Service

PEP : Performance Engineering Programme (long-term scientific studies

PER : Packet Encoding Rules

PER : Performance

PERM : Permanent

PERF : Performance

PERT : Programme Evaluation and Review Technique

PES : Proposed Eurocontrol Standard Document

PETAL : Preliminary Eurocontrol Tests of Air/Ground data Link

PEX : PHIGS Extended X-Windows System

PF : Pilot Flying

PFA, Pfa : Probability of False Alarm

pFAST : passive Final Approach Spacing Tool

PFC : Passenger Facility Charges

PFD : Planned Flight Data (CFMU - CASA)

PFD : Primary Flight Display

PFD : Probability of Failure Detection

PFE : Path Following Error

PFI : Private Finance Initiative

PFL : Planned Flight Level

PFLext : Probability of Failure/Fault Localisation, external

PFLint : Probability of Fault Localisation, internal

PFM : Pre-Flight Messages (EW)

PFN : Pulse-Forming-Network

PFR : Probability of Failure Repair

PGMP : Pilot Group on ATCO Manpower Planning

PGS : CFMU/MSB - Personnel General Services Team

PHA : Preliminary Hazard Analysis

PHARE : Poland, Hungary Aid for Restructuring of the Economy (European Commission)

PHARE : Programme for Harmonised Air Traffic Management and Research in Eurocontrol ; Programmed for Harmonised Research in Europe

PHAROS : Plan Handling and Radar Operating System (NL - Military)

PHIBUF Performance Buffet Limit

PHIGS : Programmer's Hierarchical Interactive Graphics System

PHINOM : Nominal Bank Angle

PI : Performance Indicator

PI : Peripheral Interface (CBN - CNG)

PI : Procedure Turn to Intercept (ARINC 424 Path Terminator)

PIAC : Peak Instantaneous Aircraft Count

PIB : Policy Information Base

PIB : Pre-flight Information Bulletin (plain language)

PIC : Pilot in Command

PICASSO : Control, Analysis and Monitoring of the Spanish Air Navigation System. Statistical application

PID : Pilot Information Downlink (service)

PIM : Programme Implementation Management

PIP : Plug In Panel

PIP : Product Improvement Package/Programm

PIREP : Pilot Report (ICAO)

PIREPS Pilot Reports

PIRG : Planning and Implementation Regional Groups (ICAO, al)

PIU : Parent IFPS Unit

PJE : Parachute Jumping Exercise

PK : PIA Pakistan International (airline)

PL : Ice Pellets (meteo)

PL : Poland (ISO Country Code)

PL : Pseudolite

PLA : Practise Low Approach

PLANO : Procedures Linked to Abating Noisy Operations (ANCAT TF)


PLB : Personal Locator Beacon

PLC : Planning Controller (also known as Coordinator)

PLL : Phase Locked Loop

PLMN : Public Land Mobile Network

PLN : Flight Plan

PLN : Flight Plan Conformance (new name is FLIPCY)

PLP : Packet Layer Protocol

PLVL : Present Level

PLW : Plow, Plowed

PMAT : Portable Maintenance Acces Terminal

PMB : Programme Management Board

PMB : Project Management Bureau

PMB : Project Management Bureau

PMC : Project Management Cell

PMCG : Preliminary Maastricht Co-ordination Group

PMCS : Performance Management Computer System

PMCT : People Management Core Team

PMD : Pre-warning Message for Departure

PME : Pre-warning Message Entry

PM/FL : Process Monitoring / Fault Location

PMO : Pre-warning Message OAT

PMO : Prorgram Management Organization

PMP : Project Management Plan

PMR Steering Committee : Planning Monitoring and Reporting Steering Committee

PMS : Performance Management / Monitoring System

PMT : Plan à Moyen Terme (MTP)

PMW : Project Management Workbench

PMX : Planning Message Exit

PN : Prior Notice Required

PND : Primary Navigation Display

PNF : Pilot Not Flying

PNR : Point of No Return

PNR : Prior Notice Required

PO : Dust devils (meteo)

PO : Polar Air Cargo (airline)

PoACCS : Portuguese Air Command and Control System

PoAF : Portuguese Air Force

POB : Persons On Board

POC : Point of Contact

POD : Port of Debarkation

POE : Port of Embarkation

POEMS : Pre-Operational European Mode S Station

POEMS : Pre-Operational (development) European Mode S Enhanced Surveillance

POG : Point of Gaze

POR : INMARSAT Pacific Ocean Region

POR : Pacific Ocean Region

PoR : Point of Risk

POS : Position

Positive RA : RA applying minimum vertical rate (eg climb)

POS INIT Position Initialization

POSIX : Portable Operating System Interface for Computer Environments

POS REF Position Reference

POSS : Possible

PPC : Physical Protected Circuit

PPC : Policy Planning Committee

PPC : CFMU/ENGD - Projects, Procurement & Communication Section

PPD : Aircrew Preferences Downlink (Service)

PPD : Pilot References Downlink

PPD : Plans and Policy Division

PPI : Plan Position Indicator

ppi : Points Per Inch or points per inch

PPL : Private Pilot License

PPM : Pages per Minute

PPM : Pulse Position Modulation

PPO : Prior Permission Only

PPOS Present Position

PPR : Prior Permission Required

PPS : Precision Positioning Service/System

PPS, pps : Pulses Per Second

PPSN : Present Position

PPSN : Public Packet Switching Network

PQM : Project Quality Manager

PQP : Project Quality Plan

PR : Banks (meteo)

PR : Position Reporting

PR : Primary Radar

PR : Pseudorange

PR, PRI : Primary (radar or unit)

PR/PSR : Primary (Surveillance) Radar

PRA : Plot Resolution Analysis

PRA : Primary Rate Access

PRAISE : Preparation for Research and Development in Support of EATMS programme

PRAISE : Preparation of Functional Concepts from EATMS Operational Requirements

PRC : EEC business area - support to performance review

PRC : Performance Review Commission (New Convention)

PRE : Preview

PRE : Previous Centre

PREDICT : CFMU – Pre-Tactical System

preC : PreCouncil (= to replace CE)

PRF : Pulse Repetition Frequency – pertaining to radar

PRFG : Aerodrome Partially covered by Fog

Pre-OJT : Pre-On-the-Job Training

PREV : Previous

PREVI : Data Processing system to support the forecast and regulation of the air traffic (F)

PRF : Percentage of Regulated Flights(Delay Parameter Abbreviations)

PRF : Pulse Repetition Frequency (or recurrence)

PRI : Primary

PRI : Pulse Repetition Interval

PRIF : PROC Interface Tool

PRKG : Parking

PRL : Pilot Request, Level (service)

PRM : Precision Runway Monitor

PRN Code : Pseudo Random Noise Code

PRN : Pseudo Random Noise

P-RNAV : Precision Area Navigation

P-RNAV : Precision RNAV

ProATN : Prototype Aeronautical Telecommunications Network

PROB : Probability

PROC : Procedure

PROC : Procurement (tool)

PRODAT : PROSAT Data Link Experiment

PROF : Profile

PROFI : Multinational Project Financing

PROG : Progress Page on MCDU

PROM : Programmable Read Only Memory

PROP : Propellor

PRORES : Problem Resolution

PROSAT : Program Satellite (European Space Agency)

PROSIT : Problem Situation

PROV : Provisional

PROVE : European ATC Pre-operational Validation and Experimental Trials Platform

PRP : Pulse repetition Period

PRQ : Pilot Request (service)

PRR : Performance Review Report

PRR : Pilot Request, Route (service)

PRS : Performance Review System

PRS : Picture Repetition Store

PRSG : Performance Review Sub-Group

PRT : Preferences Tool

PRT : Processing Response Time

PRU : Performance Review Unit (New Convention)

Ps : Pressure, static - air data mearsurement

PS : Pacific Southwest Airways

PS : Plus

PS : Position Symbol

PS : Power Supply (ACS)

PS : Problem Solver (PATs)

PSA : Passive Slot Allocation

PSA : Primary Subject Area

PSA : Provisional Site Acceptance

PSAP : Presentation Service Access Point

PSAL : Provisional Slot Allocation List

PSB : Parallel System Bus

PSC : Performance, Standard, Conditions

PSC : Project Steering Committee

PSDN : Packet Switched Data Network

PSDN : Public Switched Data Network

PSE : Primary Surveillance Equipment

PSG : Passing

PSG : Programme Steering Group

Psi : Pounds/square inch

PSMC-Channel : Packet System Management and Control Channel

PSMSL : Permanent Service for Mean Sea Level

PSN : Position

PSN : Public Switch Network (DFS = sub-network RAPNET, CBN = system of the national ATS)

PSP : Pierced Steel Planks

PSP : Primary Spare Part

PSPDN : Packet Switched Public Data Network

PSR : Packed Snow on Runway(s)

PSR : Primary Secondary Radar

PSR : Primary Surveillance Radar

PSSA : Preliminary System Safety Assessment

PSSR : Present Secondary Surveillance Radar -code-

PST : Project Supervision Team

PSTN : Packed Switched Telecommunication Network

PSTN : Public Switched Telephone Network

Pt  : Total Pressure

PT : Point

PT : Portugal (ISO Country Code)

PTCHY : Patchy

PTE : POEMS Test Environment

PTH : Path

PTN : Procedure Turn

PTO : Preferred Time Over

PTOT : Provisional Take Off Time

P- t - P / pt to pt : Point-to-Point

PTP : Part-Task Practice

PTRMC : Prototype Team Resource Management Courseware

PTS : PoinTS (route points)

PTS : Polar Track Structure

PTS : Pre-Training Screen

PTSD : Post Traumatic Stress Disorder

PTT : Part-Task Trainer

PTT : Push to Talk

PTW : Project Team Work

PU : Processing Unit

PUB : Publications and Charts (AIS-TF)

PUMA : Performance Usability-Modelling of ATM

PV : Performance Verification

PV : Present Value

PVASI : Pulsating Visual Approach Slope Indicator

PVC : Permanent Virtual Circuit

PVD : Plan View Display

PVT : Private

PVT : GNSS Position Velocity Time

PWB : Printed Wire Board

PWG : Pensions Working Group

PWP : Physical Working Position

PWP : Published Way Point

PWR : Power

PZ 90 : Parameters of Earth 1990

PZ : Portotroz (SI)



Q : Question

Q : Quadrature Component (MTI)

Q : Atmospheric Pressure

Q&A : Question and Answer

Q.23 : Signalling system for PABX

Q.SIG : ATS-Q.SIG - standard for ATC. G/G voice communications

QA : Quality Assurance (Section) CFMU/ENGD

QAR Quick Access Recorder

QAR : Quality Assurance Representative (DECADE)

QBI : Compulsory IFR Flight

QC : Quality Control (DECADE)

QCM : Quality Control Manager

QDM : Magnetic Heading (zero wind) (ICAO)

QDR : Magnetic Bearing (ICAO)

QF : Quality Factor

QFE : Atmospheric Pressure at Aerodrome Elevation (or at runway threshold)

QFU : Magnetic orientation or runway in use

QHN : Altimeter Sub-scale setting (RLD paper)

QNE : Altimeter subscale set to 1013,2 hectopascals

QNF : Altimeter sub-scale setting to obtain elevation when on ground

QNH : Atmospheric Pressure at Nautical Height ; Q-code designation for atmospheric pressure at mean sea level

QOS : Quality of Service

QP : Quality Plan (MAS/DFS - ODS)

QPSK : Quadrature Phase Shift Keying

QRA : Who Are You

QRH : The barometric pressure as reported by a particular station

QRPS : Route Points Store (Static Data Bank)

QSIG : Signalling to a Q Reference Network

QTE : True bearing (ICAO)

QTG : Qualification Test Guid

QTY : Quantity

QuestionAIR : Computer-based ATM questions bank

QUAD : Quadrant

QUIS : Questionnaire for User Interface Satisfaction




R : En-Route

r : Rate of change (climb or descent)

R : Red

R : Right (runway indentification)

R : Romania

R : Route Tuned NAVAID

R…: Radial (followed by a MAG track)

R…: Restricted area

R : Radar (radar service available)

R Team : Collection of air navigation charges under bilateral agreements with non-Contracting States

R&D : Research and Development

R/C Rate of Climb

R/T or RTF : Radio Telephony

R/T : Radio Telephonic Transmission

R+B : Range and Bearing line

R1 : Minor Repairs

R2 : Major Repairs

R2 : Eurocontrol Signalling Protocol

R2 : European signalling standard (Voice communication)

R2 : Signalling system used for telephone exchanges

RA : Radio Access

RA : Radio Altitude

RA : Rain (meteo)

RA : Resolution Advisory (ACAS/TCAS)

RA : Risk Analysis (TCAS)

RA : Routine Area

RAA : Regional Airline Association

RAARR : Radar Arrival

RAAS : Regional Area Augmentation System

RAC : Resolution Advisory Complement

RAC : RUHR Assistant Controller

RAC : Rules of the Air and Air Traffic Services-Control (ICAO)

RACE : Runway Capacity Enhancement

RAD : Radar

RAD : Radial

RAD : Radio

RAD : Route Availability Document

RADAC : Radar Verification Equipment in Norway

RADAR : Radio Detecting and Ranging

RADEP : Radar Departure

RADIN : Radar Data Interchange Network

RADIN : Radar Data Interface

RADNET : Radar Network (for interchange of radar data)

RADVIEW : Radar Verification Equipment in Norway

RAE : Royal Aerocraft Establishment (Farnborough)

RAF : Reference ATN Facility (US/Eurocontrol common project for development of the CAERAF)

RAF : Royal Air Force

RAFC : Regional Area Forecast Centre

RAG : Ragged

RAG : Range-Azimuth Gate Generator

RAG : Runway Arresting Gear

RAI : Italian Aeronautical Certification Authority

RAI : Runway Alignment Indicator

RAIL : Runway Alignment Indicator Lights

RAIM : Receiver Autonomous Integrity Monitoring (GPS)

RALT : name of enroute alternate aerodromes

RAM : Random Access Memory

RAM : Reliability, Availability and Maintainability

RAM : Responsability Assignments Matrix

RAMBO : Reliable, Available, Maintainable, Benefits, Objectives

RAMOS : Remote Automatic Meteorological Observing System

RAMS : Reorganised ATC Mathematical Simulator

RAN : Regional Air Navigation (meeting)

RANSU : Regional Air Navigation Service Unit (DFS)

RAP : Recognised Air Picture

RAP : Resource Allocation Process

RAPCON : Radar Approach Control Facility

RAPID : Recognised Picture Identification Distribution

RAPNET : (European) Regional Aeronautical Packet Switched Network (CBN + DAKOS)

RAPPI : Radar Access Plan Position

RAPS Recovery Access Presentation System

RAR : Restricted Area Requested

RARAD : Radar Advisory

RAS : Resource Allocation System

RASA : Radar Advisory Service Area

RASA : Requirements Analysis Strategy and Architecture Sub-group

RASC : Regional AIS System Centre

RASCAL : Radar Sharing Calculation

RASCAL : Radar Station Coverage Calculator

RASCAL Rotorcraft Air Crew Systems Concepts Airborne Laboratory

RASIF : Radar Simulator Flugsicherung

RASP : Radar Application Specialists Panel (MTPA / SSR)

RASP : Radar Surface Picture

RASS : Radar Analysis Support System

RASS-C : Radar Analysis Support System - Centre Level

RASS-P : Radar Analysis Support System - Plot data

RASS-PDP : RASS - Polar Diagram Measurement Facility

RASS-S : Radar Analysis Support System - Sensor Level

RASS-T : Radar Analysis Support System - Track data

RASTA : Radar Statistics Program

RASV : Responsibility Air Space Volume

RATE : Remote Air Traffic Services Terminal

RATS : Radar Analysis and Test System

R-ATSU : Air Traffic Service Receiving Unit

RATT : Radio Teletype

RB : Resque Boat

RBI : Relative Bearing Selector

RBP : Radar Bypass Processor (MAS UAC)

RBS : Radio (Telephony) Backup System

RC : Radar Controller

RCA : Reduced Co-ordination Airspace

RCA : Reach Cruising Altitude

RCA : CFMU TERMINAL - Remote Client Application

RCAG : Remote Communication Air/Ground Facility

RCAT : Route Catalogue

RCC : Rescue Co-ordination Centre

RCD : DCL Request Message

RCDS : Radio Channel Distribution and Switching

RCDSS : Radar Control and Display Subsystem

RCF : Radio Communications Failure

RCFEP : Radar Data Communications Front-End Processor

RCGSP : Review of the General Concept for Separating Panel (ICAO)

RCH : Reach or Reaching

RCHG : Repetitive Flight Plan Modification Message (ADEXP only)

R-Channel : Random Access Channel

RCL : Executive (i.e. Radar) Controller

RCL : Runway Centre Line

RCLL : Runway Centre Line Lights

RCLR : Recleared

RCLS : Runway Centerline Lighting System

RCM : Radar Co-ordinator (Controller) Message (Mil. ECM)

RCM : Statement of Basic Operation Requirement, Planning Criteria & Methods of Application (ICAO/AIS)

RCNL : Repetitive Flight Plan Data Cancellation Message (ADEXP only)

RCO : Reduce Cumulative Overloads

RCO : Remote Communications Outlet

RCO : Route Charges Office (National Route Charges Office)

RCP : Required Communication Performance

RCP : Radio Control Panel

RCR : Runway Condition Reading

RCRT : Refresh Cycle Response Time

RCS : Radar Cross Section

RCS : Remote Control System

RD : Risk Display (ODID)

RD : Routing Domain

RDC : Routing Domain Confederation

RD-Channel : Random Data Channel

RDDII : Radio Digital Distance Magnetic Indicator

RDF : Radio Direction Finding

RDG : Radar Data Generator

RDH : Reference Datum Height (for ILS)

RDI : Radio Direction Indicator

RDI : Routine Domain Identifier

RDIF : Radar Data Interchange Format

RDL : Radial

RDM : Running Display Message

RDO : Radio

RDP : Radar Data Processor

RDPP : Radar Data Post Processor

RDPS : Radar Data Processing System

RDQC : Radar Data Quality Control

RDR : Radar Data Recording

RDSS : Radar Determination Satellite System

RDTE : Research, Development, Trials and Evaluation

RE : Recent (used to qualify weather phenomena e.g. RERA = recent rain)

REA : Ready Message

REACT : Rain Echo Attenuation Compensation Technique

Real : Real time

Real-time FDMD : Real-time Flight Data Processing Management and Distribution

REC : Recall (ICAO) / Recording

REC : Receive or Receiver

REC : Request EOBT Change

RecDPS : Recording Data Processing System (PALLAS System)

REDAN : Spanish Data Network

REDL : Runway Edge Light(s)

REF : Reference

REFGHMI : Reference generic HMI

REG : Registration

REG : Regulation

REG : Regulatory (issues)

REGUL : Regulation

REIL : Runway End Indentifier Lights

REJ : Rejection Message

REJCTOT : Rejected Calculated Take-Off Time

REL : Release

RELCTD : Relocated

REM : Radio Emergency Module

REM : Roentgen Equivalent Man

REMOCO : Remote Control (Supervision System)

REMP : Radar Replacement and Modernization Programme

RENL : Runway End Light(s)

REP : Report or Reporting

REP : Reporting Point

REQ : Request or Requested

RER : Rerouting

RER : Residual Error Rate

RERTE : Reroute

RES : Radar Environment Simulator

RESA : Runway End Safety Area (ICAO)

RESP : Response (ICAO)

RESPBY : Respond by (time out to give a response)

RESTQ : Recovery Stress Questionnaire

RESTR : Restriction

RESYNCING : Resynchronizing

RET : Airborne & ground retrofit (issues)

RET : Revised EOBT

RETD : Revised Estimated Time of Departure

REV : REVision / REVise (message)

RF : Radio Frequency

RF : Radius to a Fix (ARINC 424 Path Terminator)

RFCA : Panel on Route Facility, Cost Accounting and Cost Allocation (ICAO)

RFCP : Route Facility Costs Panel (ICAO)

RFEP : Radar Front End Processor

RFF : Radar Fall-back Facility

RFF : Resque and Fire Fighting

RFG : Radio Frequency Generator

RFI : Radio Frequency Interferences

RFI : Request For Information

RFI : Request For (direct) Improvement Message

RFL : Requested Flight Level

RFLT : Radio Frequency Unit

RFM : Remote Field Monitor

RFP : Replacement Flight Plan (Procedure)

RFP : Request for Proposal

RFPD : Repetitive Flight Plan Data

RFPS : Radar data Front Processing System (PALLAS system)

RFQ : Request for Quotation

RFS : Radar Fallback System

RFS : Random Field Sequencing

RFU : Radio Frequency Unit

RG : Range

RG : Varig Brasilian (airline)

RGCSP : Review of General Concept of Separation Panel (ICAO)

RGIC : Ranging Integrity Channel

RGS : Regional Ground Station

RGS : Remote Ground Station

RH : Radar Head

RH : Right Hand (turn)

RHCP : Right Hand Circular Polarisation

RHD : Radio (or Radar) Horizon Distance

RHEA : The Role of Human in the Evolution of Air Traffic Management

RHF : Ridiculously High Frequency

RI : Route Intercept

RIB : Routing Information Base

RIC : Radar Integration Control

RICE : RTF Interface Control Equipment

RID : Review Item Description

RIF : Radio Interface

RIF : Reclearance in Flight

RIF : changes of routing to the changed destination aerodrome and/or changed destination aerodrome (Flightplan)

RIG : Regional Implementation Group

RIMS : Ranging and Integrity Monitoring Station (GNSS- 1/EGNOS)

RINAL : Portuguese Data Network

RIRT : Russian Institute of Radio Navigation and Time (St. Petersburg)

RIS : Relational Interface System

RISC : Reduced Instruction Set Computer

RISE : Retrieval and Interchange of Standards in Europe

RIT : RADNET Implementation and Integration Team

RITA : Replay Interface for TCAS Alerts

RITE : Right (direction or turn)

RJ : Roal Jordanian (airline)

RJC : Airspace Crossing Reject Message (Airspace Crossing Dialogue)

RJT : Rerouteing Rejection Message

RL : Report Leaving

RL : Runway Lights

RLA : Relay to

RLB : Rolling Ball

RLBCS : Rolling Ball CallSign (input)

RLCE : Request Level Change En-route

RLD : Rijks Luchtvaart Dienst (Dutch iquivalent of FAA)

RLG : Ring Laser Giro

RLIM : Radar Data Line Interface Module

RLMS : Replacement Lamp Monitoring System

RLLS : Runway Lead-In Light System

RLNA : Requested Level Not Available

RLP : Remote Line Printer

RLSD : Released

RLSM : Reduced Lateral Separation Minimum

RLST : Revised List (for RPLs)

RLW : Regie der LuchtWegen (NL) / Régie des Voies Aériennes (B) / Belgium Aviation Authority

RMA : Reliability, Maintainability, Availability

RMCD : Remote Master Control Desk

RMCDE : Radar Message Conversion and Distribution Equipment

RMCS : Remote Monitoring and Control System

RMI : Radio Magnetic Indicator

RMK : Remarks

RMM : Remote Maintenance Monitoring

RMNDR : Reminder

RMK : Remark(s)

RMP : Radio Management Panel

RMP : Required Monitoring Performance

RMPS : Radar Message Processing System

RMPs Radio Management Panels

RMS Error : Root Mean Square error.

RMS : Root Mean Square

RMSpv : RMS peak value

RMU : Radio Management Unit

RNAV Area Navigation (generic acronym for any device capable of aircraft guidance between pilot-defined waypoints)

RNC : Required Navigation Capability

RNDSG : Route Network Development Sub-Group

RNG : Radio Range

RNLAF : Royal Netherlands Air Force

RNP : Required Navigation Performance

RNP5 : Required Navigation Performance 5

RNPC : Required Navigation Performance Capability/Criteria

RNPTF : Required Navigation Performance Task Force

RO : Tarom Romanian Air Transport (airline)

RO : Romania (ISO Country Code)

RO : Router Function

ROBEX : Regional OPMET Bulletin Exchange (scheme)

ROBIN : Road billing network

ROC : Rate of Change

ROC : Rate of Climb

ROD : Rate of Descent

ROF : Request on Frequency (Message)

ROFOR : Route Forecast (meteo)

ROI : Return On Investment

Role : Role-play

ROM : Read Only Memory (CD)

ROMATSA : Romanian Air Traffic Services Administration

ROMBULPO : Romania, Bulgaria and Poland

RON : Receiving Only

ROPA : RAPNET Operations and Planning Agreement

ROR : Range Only Radar

ROS : Route Orientation Scheme

ROSAS : Regional Organisation of the Sequencing and Scheduling of Aircraft System

ROSE : Rational Object oriented Software Engeneering

ROSE : Remote Operations Service Element

Router An ATN network layer gateway which performs the relaying and routing of data packets across interconnecting subnetworks based on the source and destination network layer addresses and the desired quality of network service

ROZ : Restricted Operations Zone

RP : Radar Post

RP : Reporting Point

RPC : Regional Planning Criteria

RPF : Rapid Prototyping Facility 

RPK : Revenue Passenger-Kilometer

RPL : Repetitive Flight Plan

RPL : Stored Flight Plan

RPLC : Replace or Replaced

RPM : Revenue Passenger-Miles

RPM / rpm : Revolutions Per Minute

RPS : Radar Position Symbol

RPS : Recording and Playback System

RPT : Regular proficiency Training

RPT : Repeat or Repeated

RPU : Radar Processing Unit

RPV : Remotely Piloted Vehicle

RPVD : Radar Plan View Display

RPY : Replay

RQ : Air Engiadina (airline)

RQL : Request NOTAM List

RQMNTS : Requirements

RQN : Request NOTAM

RQP : Request for Flight Plan

RQP : Request Plan Message

RQP : CFMU/URB - Relations, Quality & Performance Team

RQRD : Required

RQS : Request Supplementary Flight Plan

RQS : Request Supplementary Information Message

RQT : ReQuesTing

RR : Report Reaching

RRA : Radar Recording Analysis

RRA : (or RRb, RRC etc. in sequence) delayed meteorological message

RRC : Recording Replay Computer

RRCIU : Remote Radio Control Interface Unit

RRCS :  Remote Radio Control System

RREC : Repetitive Flight Plan Recovery Message

RRL : Runway Remaining Lights

RRN : Rerouteing Notification Message

RRP : Remote Radar Post

RRP : Re-routing Proposal Message

RRR : Radar data Recording and Replay system (RADNET / application software : COMSOFT)

RRTEREF : Reroute Reference

RRTES : Reroutes

RRU : Remote Radio Unit

RRV : Referred Revision Message

RS NATS : Recruitment Services NATS

RS : NASC providing Regional Support (EAD)

RS : Radar System

RS : Reference Station

RSA : Radar Service Area

RSAP :  RMCDE Service Access Point

RSAP : Replenishment Spares Acquisition Program

RSC : Rescue Sub Centre

RSCD : Runway Surface Condition

RSFTA : Réseau de Service Fixe des Télécommunications Automatiques

RSG : Research Study Group

RSG : Route Structure Group

RSI : Radiation Status Indicator

RSLS : Receiver Side Lobe Suppression

RSM : Radar Service Message (RMCDE/ RADNET)

RSMC-Channel : Random System Management Control Channel

RSMTF : Radar Separation Minimum Task Force

RSO : Route per State Over-flown

RSOQ : Radar Stores Occupancy Query

RSP : Required System Performance

RSP : Responder Beacon

RSPD : Reported Speed

RSPL : Recommended Spare Parts List

RSR : En Route Surveillance Radar

RSRE : Royal Signals and Radar Establishment

RSS : Radar Separation Standard

RSS : Radar Sub-System

RSS : ROOT Sum Squared

RSSP : Radar Systems Specialist Panel

Rstd : Restricted (Time-Restricted Learning)

RSURTF : RASS-S Upper Requirements TF

RSUS : RPL Suspension Message

RSVN : Reservation

RSYD : Release Subject to Your Discretion

RT : Real Time

RT : Right Turn

RTA : Reduced Vertical Separation Minimum Transition Area

RTA : CFMU TERMINAL - Remote Terminal Access

RTA : Required Time of Arrival

RTB : Radar Tool Box

RTC : Radio Transmission Control

RTCA : A private, non-profit organization that brings industry and government together to address the needs of the worldwide aeronautical community. RTCA originally stood for Radio Technical Commission for Aeronautics.

RTCA : Requirements and Technical Concepts for Aviation. See also in Part II RTCA

RTD : Research and Development of Technologies

RTD : Delayed (used to indicate delayed meteorological message)

RTE  : Route

RTF or R/T : Radio Telephony

RTFM : Regulated Tactical Flight Model

RTG : Radio Telegraph

RTHL : Runway Treshold Light(s)

RTI : D-RVR Delivery Messge

RTIS : Road Travel Information Services

RTLS : Return To Launch Site

RTMDE : RADNET Test Monitoring and Demonstration Equipment (coulor screen)

RTN : Return or Returned or Returning

RTO : Ready for Take OffL : Reduced Take-Off and Landing

RTODAH : Rejected Take-off Distance Available, Helicopter

RTOS : Real Time Operating System

RTPTS : RouTe PoinTS

RTQC : Real Time Quality Control

RTQC/A : Real Time Quality Control / Assessment

RTR : D-RVR Request Message

RTR : Remote Transmission / Receiver

RTS : Real Time Simulation

RTS : Return to Service

RTSE : Reliable Transfer Service Element

RTSIM : Real-Time Simulation

RTT : D-RVR Termination Message

RTT : Ready to Task

RTT : Radiotletypewriter

RTZL : Runway Touchdown Zone Light(s)

RU : Russian Federation (ISO Countries Codes)

RUF : Rought

RUG : RASS Users Group

RUT : Standard Regional Route Transmitting

RV : Rescue Vessel

R-VKL : Radar (executive-) controller

RVSM : Reduced Vertical Separation Minimum of 300 m (1000 ft) between FL 290 and FL 410 inclusive.

RVR : Runway Visual Range

RVRM : Runway Visual Range Midpoint

RVRR : Runway Visual Range Rollout

RVRT : Runway Visual Range Touchdown

RVSM Entry Point : Reduced Vertical Separation Minima Entry Point

RVSM Exit Point : Reduced Vertical Separation Minima Exit Point

RVSM : Reduced Vertical Separation Minimum (in Europe)

RW : Runway

RWEWP : Runway End Way-point

RWIWP : Runway Intercept Way-point

RWY : Runway

RWY WP : Runway Waypoint

RX : Receiver Station



s : seconds

S : South

S : Sweden

S : Secondary or Supplementary (frequency)

S/C : Step Climb

S1 : The future (desired) state

SA Degradation : Selective Availability degradation (of satellite signals)

SA : Salivary Cortisol

SA : Sand (meteo)

SA : Satellite

SA : Selective Availability (GPS)

SA : Separation Assurance

SA : Situational Awareness

SA : Skill Acquisition

SA : South African Airways (airline)

SAAM : System for Assignment and Analysis at a Macroscopic level (8.33 User Guide)

SAARU : Secondary Attitude/Air data Reference Unit

SAC : Source Area Code

SAC : Strategic Air Command

SAC : System Assisted Co-ordination

SACEUR : Supreme Allied Commander Europe

SACHA : Separation and Control Hiring Assessment

SACLANT : Supreme Allied Commander Atlantic

SACON : Slovak Aeronautical Communication Network

SAD : System Architecture Document

SADIS : (Swedish) Satellite Distribution System

SADIS : Satellite Distribution of World Area Forecast System / ICAO Group

SAE : Society of Automotive Engineers

SAIFIR : System Iad for Integration and Fault Reporting (777)

SAF : EEC business area - support to safety monitoring

SAF : Safety (EATM domain)

SAFA : Safety Assessment of Foreign Aircraf (JAA)

SAFER : Safety and Errors

SAFI : Safety Monitoring for Indicators

SAI : System Architecture Interface

SAICO : Swedish Aeronautical Information Computer Aided system

SAL : Slot Allocation List

SALADT : Screening Angle Analysis Digitised Terrain

SALS : Simple Approach Light System

SAM : Slot Allocation Message (CFMU - CASA)

SAM : South American Region

SAMHS : Spanish Aeronautical Messages Handling System

SAMPE : Society for the Advancement of Material and Process Equipment

SAMSO : US Air Force Systems Command / Space and Missile Organization (now Space Division)

SAMTF : Safety Assessment Methodology Task Force

SAN : Sanitary

SAN : Satellite Access Node

SANe : Skill Acquisition Network

SAP : Service Access Point

SAP :  as Soon as Possisble

SAPPHIRE : Satellite and Aircraft Database Programme for System Integrity Research

SAR : Search and Rescue

SAR : Stand-Alone Receiver

SAR : Synthetic Aperture Radar

SARP : Signal Automatic Radar Processing (NL)

SARPs : Standards and Recommended Practices (ICAO)

SARSAT : Search and Rescue Satellite Aided Tracking

SAS : Single Attachment Station (FDDI)

SAS : Scandinavian Airlines System

SAS : Scandinavian Airlines (airline)

SASKI : Name of an ATS Route reporting point

SASS : Surveillance Analysis Support System (ATC)

SASS-C : Surveillance Analysis Support System - Centre

SASS-S : Surveillance Analysis Support System - Sensor

SAT : Satellite(s)

SAT : Simulation Assessment Team

SAT : Site (System) Acceptance Test

SAT : Static Air Temperature

SAT : Systems Approach to Training

SATCAS : Selenia Air Traffic Control Automated System

SATCNS WG : Satellite CNS Work Group

SATCNS : Satellite Communications Navigation and Surveillance

SATCO : Signal Automatic Control

SATCOM : Satellite Communications

SATNAV GNSS : Satellite Navigation Sub-Group (NAVSEP TF)

SATORI : Systematic Air Traffic Operations Research Initiative (US)

SATS : Simulator System for Air Traffic Services

SATSA : Swedish ATS Academy

SAW : Surface Acoustic Wave Filter

SAWRS : Supplementary Aviation Weather Reporting Station

SB :Service Bulletin

SB : Southbound

SBAS : Space/Satellite Based Augmentation System

SBIR Small Business Innovative Research

SBR : Spaceborne Radar

SBR : Self Briefing

SBSR : Space Based Secondary Radar

SBT : Self Briefing Terminal

SBU : Service Business Unit SC : Sector Co-ordinator

SC : Security Council (UN)

SC : Senior Controller

SC : Single Click (Mouse Input)

SC : Special Corridor

SC : Stack Controller

SC : Standing Committee (RTCA)

SC : Stratocumulus

SCAA : Slovenian CAA

SCAN : Swiss Data Network

SCAT : Supersonic Civil Air Transport

SCAT-1 Approach : Special Category 1 Approach

SCAT-1 : Special Category 1

SCATANA : Security Control of Air Traffic and Air Navigation Aids

SCATCC : Scottish Air Traffic Control Centre

SCC : Satellite Control Centre

SCDT : Selected Controlled Departure Times

SCEAP : Steering Committee for External Assistance Projects (decision DG)

SCEPC : Senior Civil Emergency Planning Committee

SCG : System Concept Group

SCIA : Simultaneous Converging Instrument Approaches

SCOATCC : Scottish Oceanic Air Traffic Control Centre

SCORS : Surveillance Concepts and Operational Requirements

SCP : Support Computer Programme

SCPC : Single Carrier per Channel

SCR : Scroll

SCRAD : Steering Committee for Research, Analysis and Development

SCRR : Service Central de Redevances de Route

SCS : Strategy Concept & System (EATM Unit)

SCSI : Small Computer-System Interface

SCT : Scattered (meteo)

SCTD : Scattered (meteo)

SCT : Surveillance Coordination Team

SCTA : Service du Contrôle du Trafic Aérien (DGAC, DNA, France)

SCU : Satellite Communications Unit

SCU : Support CWP-Unit

SCV : Sub-Clutter Visibility

SD : Serial Dialling

SD : Specialist Domain

SD : Standard Deviation

SD'xx' : Specialist Domain `number'

SDB : Static Data Bank

SDBY : Standby

SDD : Software Design Document

SDD : Synthetic Data Display

SDDLC : System Design and Development Life Cycle

SDE : Senior Director EATM

SDE : System Development Environment

SDF : Simplified Directional Facility

SDG : Sensor Data Generator

SDL : Standard Distribution List

SDLC : Synchronous Data Link Control procedures

SDLS : Satellite Data Link System

SDM : System Definition Manual (INMARSAT)

SDO : Selected Display Option (ODID)

SDO : Static Data Operations

SDO : Supplementary Display Option

SDOE : Senior Director Operations and EATCHIP

SDP : Second Development Project

SDP : Simulator Development programme

SDP : Software Development Phase

SDP : Software Development Plan

SDP : Surveillance Data Processing (Sub-group CCT/EATCHIP)

SDPD : Surveillance Data Processing and Distribution

SDPDS : Surveillance Data Processing and Distribution System

SDPS : Surveillance Data Processing System (ICAO)

SDR : System Design Review

SDT : Stack Departure Time

SDT : CFMU/FMD - Support, Development & Training Section

SDTF : SYSCO Development TF

SDU : Satellite Data Unit

SDU : Static Data Update message

SDV : Simulator Development

SE : Single Engine

SE : South-East

SE : Strategy Element

SE : Sweden (ISO Country Code)

SEAT : Site Equipment Acceptance Test

SEB : Southeast Bound

sec : Seconds

SECAM : Safety, Efficiency and Capacity in ATM Methodologies

SECRA : Secondary Radar

SECT : Sector

SED : Secondary Engine Display

SEE : Software Engineering Environment

SEL : Sector List Window

SEL : Selected

SEL: Selcal code (Flightplan)

SELCAL : Selective Calling (System)

SELREL : Selective Release

SEM : Semmerzake

SEMP : Software Engineering Management Plan

SEP : Selective Employment Plan

SEP : Single Engine Piston

SEP : Spherical Error Probable

SEQ : Sequence

SER : Service or Servicing or Served

SEROS : Semmerzake Radar Operating System (B / Military)

SES : Supplementary Equipment and Services

SESMA Special Event Search and Master Analysis

SESY : CFMU/DEVD - Service Systems Section

SET : Singe Engine Turbo-Prop

SEU : Software Engineering unit

SEV : Severe (used e.g. to qualify icing or turbulende reports)

SF : Finland

SF : Scaling Factor

SF: Sequenced Flashing Lights

SFACT : Service de la Formation Aéronautique et du Contrôle Technique

SFC : Surface (Ground Level / Sea Level)

SFD : Start Frame Delimiter

SFL : Sequence Flashing Lights

SFL : Supplementary Flight Level

SFLA : Assign SFL

SFMC : Sickness Fund Management Committee

SFOR : Stabilisation Force (Sarajevo)

SFPL : Short Flight Plan (FDPS)

SFPL : System Flight Plan Processing

SFT : Simplified Fast Time Simulations

SG : Snow Grains (meteo)

SG : Safety Group

SGAMI : Select Group for Assessing Manpower Issues

SGC : Swept Gain Control

SGCAS : Study Group on Certification of Automatic Systems

SGL : Signal

SGR : Study Group of the enlarged Committees for Route Charges (Eurocontrol)

SGS 85 : Sovietic Geodetic System

SH : Showers (meteo)

SHACC : SHAPE Airspace Coordination Centre

SHANDAP : Shannon Data Processing (System)

SHAPE : Supreme Headquarters Allied Powers Europe

SHAPE : Solutions for Human Automation Partnerships in European ATM

SHEL Model : Software - Hardware - Environment - Liveware Model

SHEL : Software, Hardware, Environment, Liveware

SHF : Super High Frequency

SHL : Saville and Holdsworth Ltd.

SHORAN : Short Range Navigation

SI : International System of Units

SI : Sector Indicator

SI : Selective Interrogator

SI : Situational Interview

SI : Slovenia, Republic of Slovenia (ISO Country Code)

SIA : Service d'Information Aéronautique

SIC : Second in Command

SIC : Sector Intercom (VCS)

SIC : Source Identification Code

SIC : Subject Indicator Code

SICASP : Secondary Surveillance Radar Improvements and Collision Avoidance System Panel (ICAO)

SICT : System Implementation Coordination Team

SICTA : Italian Consortium for the Applied ATM Research

SID : Standard Instrument Departure (Route)

SID/STAR : Standard Instrument Departure / Standard Arrival Route

SIDMET : Information issued by meteorological watch office

SIE : Standard Interface Equipment

SIF : Selective Identification Feature

SIGMA : Systemintegreging Gemensam Maskinvara (SE) / System Integration in Common Hardware

SIGMET : Significant Meteorological Information (broadcast warnings of weather hazards)

SIGWX : Significant Weather

SIL : Sector Inbound List Window

SIM : Simulator / Simulation(s) (EEC service)

SIM : Subscriber Identification Module

SIM-5 : Simulation Modernisation Project

SIMM : Symbolic Integrated Maintenance Manual

SIMMOD : Simulation Model

Simul : Simulation

SIMUL : Simultaneous or Simultaneously

SIO : Sector Input Operator (MAS Ops Room)

SIOP : Society for Industrial and Organisational Psychology, Inc.

SIP : Slot Improvement Proposal Message

SIR : Packed or Compacted Snow and Ice on Runway(s)

SIRO : Simultaneous Intersecting Runway Operations

SIROCCO : Study of the Impact of Revised Operational Concepts on the CNS/ATM ODP Model

SIS : English Standard for Documentation

SIS : Signal In Space

SIS : Special Information System

SISG : Safety Improvement Sub-Group

SIT : Slot Issue Time Parameter

SIT : Software Integration Test

SIT : Subsystem Integration Test (DECADE)

SIT : System Integration Team

SITA : Société Internationale de Télécommunications Aéronautiques (F) / Airline telecommunications and Information Service

SITAP : Simulator for Transportation, Analysis and Planning

SITATEX : Software developed by SITA

SITD : Systems Integration and Test Department

SITS : Subsytem Integration and Test Station

SIWL : Single Isolated Wheel Load

SJA : Strategic Job Analysis

SK : Slovakia, Slovak Republic (ISO Country Code)

SKC : Sky Clear (meteo)

SKED : Schedule, scheduled

SKIP : SKIP a sector

SL : Sea Level

SLA : Service Level Agreement

SLAP : Slot Allocation Procedures

SLAR : Side-Looking Airborne Radar

SLB : Side Lobe Banking

SLC : Side Lobe Cancellation

SLC : Slot Requirement Cancellation Message

SLI : Supplementary Level Inbound (ODID)

SLM : Standard Length Message (Mode S)

SLO : Supplementary Level Outbound (ODID)

SLOP : Strategic Lateral Offset Procedure

Slot : An arrival or departure time window reserved for a flight.

SLP : Speed Limit Point

SLR : Satellite Laser Ranging

SLR : Slush of Runway(s)

SLS : Satellite Landing System

SLS : Interrogation Side Lobe Suppression

SLT : Scheduled Landing Time

SLT : Slot Allocation

SLV : Statens Luftfartsvaesen (CAA/DK)

SLW : Sector Load Window

SLW : Selected Label Window

SLW : Slow

SM : Stack Manager

SMAA : Study for Mediterranean Area ADS

SMAE : Systems Management Application Entity

SMAN : Surface Management (APATSI)

SMART : Self-Managed Arrival Resequencing Tool

SMART : Simulator for Multi-radar analysis for realistic Trade / Traffic

SMART : Standard Modular Avionics Repair and Test

SMATSA : Serbia and Montenegro Air Traffic Services Agency Ltd

SMAW : Safe Minimum Altitude Warning

SMC : Station Monitoring and Control (RMCDE)

SMC : Surface Movement Control

SMC : System Monitoring and Computer / Control

SMC : Systems Management Concept

SMD : Storage Module Device

SMDE : Software Maintenance and Development Environment

SME : Subject Major/Matter Expert

SMEQ : Subjective Mental Effort Questionnaire

SMGC(S) : Surface Movement Guidance and Control (System)

SMHI : Swedish government owned (civil) MET Institute

SMI : Special Message Identifier (ACARS message Type B)

SMI : Stakeholder Relations Management and International Co-ordination

SMIDTS : Synthetic Movings Image Didactic / Tower Control Simulator (RLW/RVA)

SMITF : Safety Monitoring and Improvement Task Force

SMM : Safety Management Manual

SMM : Sector Monitor Message (RMCDE)

SMM : Slot Missed Message

SMR : Surface Movement Radar

SMS : Safety Management System

SMT : Station Management (FDDI / RMCDE)

SMT : Surface Mount Technology

SMTP : Simple Mail Transfer Protocol

SMX : Sub-Multiplexer

SN : Brussels Airlines (airline)

SN : System Notam

SN : Snow (meteo)

SN, S/N : Signal-to-Noise

SNA : Satellite Navigation Application

SNA : System Network Architecture (IBM Network)

SNAcF : Subnetwork Access Function

SNAcP : Subnetwork Access Protocol

SNASG, SNA-SG : Satellite Navigation Applications Sub- Group

SNBNK : Snowbank/s Caused by Plowing (Windrow(s))

SNDC : Subnetwork Dependent Convergence Function

SNDCF : Sub-Network Dependent Convergence Facility

SNET : Safety Nets

SNGL : Single

SNICF : Subnetwork Independent Convergence Function

SNIR, S/N : Signal-to-noise ratio

SNME : Subnetwork Management Entity

SNMP : Simple Network Management Protocol (RAPNET - CNG-)

SNOWTAM : A special series NOTAM notifying the presence or removal of hazardous conditions due to snow, ice, slush or standing water associated with snow, slush and ice on the movement area, by means of a specific pro forma.

SNPA : Subnetwork Point of Attachment

SNR : Signal-to-Noise Ratio

SO Southern Airways

SO : Specialist Objectives

SO : Standards Office (Eurocontrol) So : The Present (undesired) state

SOC : Start of Climb

SOC : System / Sector Operations Centre

SODALS: Simplified Omnidirectional Approach Lighting System

SOF : Stand-alone Operations Facility

SOGITS : Senior Official Group in IT Standardisation

SOIR : Simultaneous Operations on parallel (or near- parallel) Instrument Runways

SOL : Sector Outbound List (MDP)

SOP : Standard Operating Procedures

SOPA Standard Operating Procedure Amplified

SOR : State of Readiness

SOS : CFMU/ENGD – Systems Operations Section

SOTA : South Oceanic Transition area

SOW : Statement of Work

SP Space

sp : Ground Speed

SP : Service Provider

SP : Special Purpose (ASTERIX)

SP : Special point

SP : Standard Precision

SP : Succession Planning

SP : System Parameter

SPA : Slot Improvement Proposal Acceptance Message

SPACDAR : Specialist Panel on Automatic Conflict Detection and Resolution

SPAF : Strategic Performance Analysis and Forecast

SPAS : Sensor Performance Analysis Standard

SPD : Speed, Speed Mode

SPECI : Aviation Selected Special Weather Report

SPECIAL : Special Meteorological Report

SPF : Scratch Pad Field

SPG : Special Planning Group

SPI : Special Pulse (Position) Identification (SSR)

SPL : System Flight Plan / Supplementary Flight Plan

SPMP : Software Project Management Plan

SPN : Short Plan Input

SPO : Special Project Office

SPO : Strategic Plan of Operation. See SPT

SPOC : SAR Point in Contact

SPORA : Specialist Panel on Operational Research and Analysis

SPOT : Spot Wind

SPR : Strip Printer

S-P-R-c : Stimuli, Processing, Response, controlled executive

SPS Sensor Processing Subsystem

SPS : Siemens Plessey Systems

SPS : Standard Positioning Service

SPS : STDMA/VDL Mode 4 Performance Simulator

SPSS : Statistical Package for the Social Sciences

SPT : Strategic Planning Team. The Strategic Planning Team acts as a focal point for the development of collaborative Strategic Plans of Operation.

sq. in. : Square Inch

sq-cm : cm2

SQ : Singapore Airlines (airline)

SQ : Squalls (meteo)

SQE : Software Quality Engineer (DECADE)

SQL : Squall Line

SQL : Structured Query Language

SQS : Safety, Quality Management, and Standardisation (EATM Unit)

SQU : Squelch (VCS)

SR : Slovak Republic

SR : Study Report

SR : Sunrise

SR : Swissair (airline)

SR-30 : 30 Minutes before Sunrise

SRA : Surveillance Radar Approach

SRA : Special Rules Area

SRB : Solid Rocket Booster

SRC : Safety Regulation Commission (New Convention)

SRC : Systems and Research Center

SRD : Standard Route Document

SRD : System (or Software) Requirements Document

SRD : System Research and Development

SRDTF : System Research & Development Task Force

SRE : Slant Range Error

SRE : Surveillance Radar Element of GCA

SRG : Safety Regulation Group

SRG : Short Range

SRI : Stanford Research Institute

SRI : System Replay and Investigation

SRJ : Slot Improvement Proposal Rejection Message

SRM : Sector Revision Message

SRM : Slot Revision Message

SRP : Selected Reference Point

SRP : Slot Reference Point

SRP : Slot Revision Proposal (CFMU - CASA)

SRQ : Slot Request

SRR : Search and Resque Region

SRR : Slot Revision Request (CFMU - CASA)

SRR : System Requirements Review

SRS : Standard Routeing Scheme

SRS : System Requirements Specification

SRSG : Safety Regulation Sub-Group

SRT : Single Radar Tracker

SRT : Sort Route Transparent

SRU : Safety Regulation Unit (to support SRC). See SRC

SRU : Shop Replaceable Unit

SRV : Server

SRZ : Special Rules Zone SS : Sand Storm (meteo)

SS : Sector Supervisor SS : Sunset

SS+30 : 30 Minutes after Sunset

SSA : Smallest Space Analysis

SSA : System Safety Assessment

SSALF : Simplified Short Approach Lighting with Sequence Flashers

SSALR : Simplified Short Approach Lighting with Runway Alignment Indicator Lights

SSALS : Simplified Short Approach Lighting Systerm

SSAP Selector : Session Service Selector

SSAP : Source Service Access Point (RMCDE / RADNET)

SSB : Single Side Band

SSD : Synthetic Situation Display

SSDD : System/Segment Design Document

SSDG : Surveillance Strategy Drafting Group

SSE : South-South-East

SSE : Sum of Squared Errors

SSEC : Static Source Error Correction

SSFDR Solid-State Flight Data Recorder

SSGHI : Surveillance Sub-Group on Harmonisation and Implementation

SSGS : Surveillance Sub-Group on Standards

SSGT : Surveillance Sub-Group on Tools

SSM Sign Status Matrix

SSM : Standard Schedules information Manual

SSM : System Surveillance and Maintenance

SSO : STAR Support Office

SSP : Secondary Spare Part

SSP : Sole Source Procurement

SSP : Source Selection Panel

SSPA : Solid State Phased Array

SSPSG : Structures for Service Provision Sub-Group (High Level Group: Single European Sky (EU)

SSR Mode S : Selective Address SSR

SSR : Secondary Surveillance Radar

SSR : Software Specification Review

SSR : Solid State Relay

SSRBRIGH : Highlight set code to target (input)

SSRC : Current SSR Code

SSS : Source Select Switch

SSS : System/Segment Specification

SSSP : EU Subgroup on Structures for Service Provision (see SSPSG)

SST : Supersonic Transport

SSTS : Space Surveillance and Tracking System

S-SUP : Sector Supervisor

SSW : South-South-West

ST : Specialist Task

ST : Stratus

ST, S/T : Short-Term

STA : Sequence / Scheduled Time of Arrival

STA : Straight in Approach

STAB Stabilizer

STAC : Second Time Around Clutter

STANAG, Stanag : Standardisation Agreement

STANINE : Standard Nine Score

STANLY : Statistics and Analysis

STANS : Simulation facility of a Total Air Navigation System

STAR : Second Time Around Returns (Radar)

STAR : Self Test and Repair

STAR : Sistema Telegráfico Automático de Retransmissão (PoAF) (PT) / Standard (instrument) Arrival Route

STAR : Standard Terminal (Instrument) Arrival Route

STAR : Studies, Tests and Applied Research (former STT)

STAR : Surface to Air Recovery

STARS : Surveillance and Tracking Attack Radar System

START-OVER : Process of putting in action the COLD- STANDBY

STAT : Second-Time-Around Targets

STAT : Statistics

STATFOR : Specialist Panel on Air Traffic Statistics & Forecasts

STB TF : Short-Term Benefits Task Force

STC : Sensitivity Time Control

STC : SHAPE Technical Centre (NATO, Hague)

STC : Short Time Constant

STC : Simulation Technical Coordinator

STC : Steering Committee

STC : Supplemental Type Certificate (FAA)

STCA : Short-Term Conflict Alert ; a ground-based safety net

STCD : Short-Term Conflict Detection

STCW : Short-Term Conflict Warning

STD : Scheduled Time of Departure

STD : Software Technical Designer

STD : Standard (altimeter setting)

STDMA : Self-organising Time Division Multiple Access

STEP : Social, Technological, Environmental and Political


STF ARTAS, STFAD : Surveillance Task Force on ARTAS Development

STF : Selection Task Force

STF : Stratiform

STFAP : Surveillance Task Force on the Appraisal Programme

STFDPPAS : Surveillance Task Force on the Data Processing Performance Analysis Standard

STFRDE : Surveillance Task Force on Radar Data Exchange

STFRL : Surveillance Task Force on Reference Levels

STFRSS : Surveillance Task Force on the Radar Surveillance Standards

STFSDIR : Surveillance Task Force on Surveillance data Distribution Infrastructure Requirements

STF-SDPS : Surveillance Task Force on Surveillance Data Processing Systems

STFSPAS : Surveillance Task Force on the Sensor Performance Analysis Standard

STFTE : Special Task Force of Training Experts

STFTV : Surveillance Task Force on Transponder Verification

STG : Eurocontrol Standards Group . See SSGS

ST-ICD : Short-Term Interface Control Document

STLP : ATS Selection Training and Licensing Panel

STMP : Special Traffic Management Program.

STN : Station

STNR : Stationary

STOA : Scientific and Technological Options Assessment

STOL : Short Take Off and Landing

STORIA : Simulation Tool for Online Recording and Analysis

STP : Shielded Twisted Pair or Software Rest Plan

STP : Software Test Plan (MAS/DFS - ODS)

STP : Standardised Training Package

STPV : Service du Traitement automatique des Plans de Vol (F-FPPS)

STR : Service du Traitement des données Radar (F- RDPS)

STR : Software Test Report

STRANGE : Simplified Trajectory Generator

STRAT : Strategic Planning System

STRATPLAN : CFMU Strategic Planning Meeting

STS : Stand-by Telephone System

STS : Status (Indicator)

STS : Reasons for special handling: (Flightplan) STS/ATFM EXEMPT APPROVED

StS : Support to States (Eurocontrol)

STSMOD : Delay ac (input)

STT : Studies, Tests and Trials (now : STAR)

STTR Small Business Technology Transfer Resources

STU : Selected Trajectory Update

STUD : Innovative studies (ARDEP)

STWL : Stopway Lights

SU : Aeroflot (airline)

SUA : Special Use Airspace

SUATMS : Single Unified ATM System

SUBJ : Subject to

SUC : Start-Up Controller

SUCT : Surveillance analysis and Calibration Tools (ARDEP)

SUDP : Surveillance data Processing (ARDEP)

SUMI : Software Usability Measurement Inventory

SUP : Supervisor

SUP : Supplement

Sup. Pract. : Supervised Practices

SUP/ACC : Supervisor Area Control Centre

SUP/APP : Supervisor Approach

SUP/MIL : Supervisor military

SUPPS : Regional Supplementary Procedures (ICAO)

SUPSIS : Supervisor (Centre and System)

SUR : Surveillance (EATM Domain)

SURT : Screen Update Response Time

SURT : Surveillance Team

SurvITE : Surveillance Integrated Tested for EATMS

SV : Secure Voice

SV : Space Vehicle (Satellite)

SVC : Service (message)

SVC : Switched Virtual Circuits (RMCDE / SIR)

SVCBL : Serviceable

SVFR : Special VFR

SVID : System V Interface Definition

SVN : Satellite Vehicle Number

SVP : Supervisor

SVRWX : Severe Weather

SVS : Synthetic Vision System

SVVP : Software Verification and Validation Plan

SW : South-West

SW, s/w : Software

SWAP : Severe Weather Avoidance Procedure (Program)

SWAT : Subjective Workload Assessment Technique

SWB : Southwest Bound

SWEPT : Swept or Broom(ed)

SWCI : Software Configuration Item

SWG : Simulation Working Group

SWI : Swisscontrol Interface

SWIFT : Specifications for Working positions In Future Air Traffic Control

SWIM : System-Wide Information Management

SWM : SIP Wanted Message

SWORD : Subjective WORkload Dominance technique

SWOT : Strength, Weaknesses, Opportunities and Threats

SWP : Software Simulation Package

SWP : Support Working Position

SWS : Software Service

SWY : Stopway (ICAO)

SXCOP : Sector Exit Coordination Point

SY : Syrian Arab Republic (ISO Countries Codes)

SYCA : System Capacity

SYCO : System Configuration

SYMA : System Manager

Sync. : Synchronous

SYSCIMIC : System supported Civil/Military Coordination

SYSCO : System Supported Coordination

SYSEVAL : System Evaluation

S (Sigma) : Symbol for sum

s (small sigma) : Symbol for Standard Deviation



t  : Tons

T : Tesla / Terminal

T : Temperature

t.b.d. : To be decided / discussed

T/C :Top-of-Climb

T/D :Top of-Descent

T/O :Takeoff

TA : Task Analysis

TA : Test Area

TA : Time of Arrival

TA : Traffic Advisory (ACAS/TCAS)

TA : Transition Action

TA : Transition Altitude

TAA : Terminal Arrival Area

TAA : Track Accuracy Analysis

TAAM : Total Airspace and Airport Modeller (Preston Group, Victoria, Australia)

TACAN : UHF Tactical Air Navigatoion aid (Azimuth and DME)

TACH Tachometer

TAC : Terminal Area Charts

TACIS : Technical Assistance to the Community of Independent States ( EC )

TACOT : TACT Automated Command Tool

TACOT : Tactical Operational Tool

TACT data : Data required by or output by the CFMU TACT system.

TACT : CFMU Tactical Computer System

TACT : Tactical Flow Management Working Position

TAD : Target Audience Description

TADIL : Tactical Distribution List

TAF : Terminal Area (Aerodrome) Forecast

TAFEI : Task Analysis For Error Identification

TAG : Transitional Airport Group (APATSI)

TAI : International Atomic Time

TAI Thermal Anti-lce

TAIL : Tail (wind)

TAIS : Total Aircraft Information System

TALK : (Swedish) VCS Upgrade Programme / System

TAM : Technical Acknowledgement Message

TAMS : Total Airport Management System

TAMP : Turkish ATC Modernisation Project

TAOIT : Tribunal Administratif de l'Organisation Internationale du Travail

TAP Terminal Area Productivity

TAR : Terminal Area (surveillance) Radar

TAR : Trials ATN Router

TARA : Terminal Area RNAV Applications Task Force

TARAD : Tracking Asynchronous Radar Data

TARE : Telegraphic Automatic Relay Equipment

TARTAR : ATS Route Structure between Armenia,

Azerbaijan, Georgia, Iran, Turkey

tas / TAS : True Airspeed

TAS : Traffic Advisory System

TASC : (Industry) The Analytical Science Corporation

TAT : Total AirTemperature

TATCA : Terminal ATC Automation (FAA)

TATCI : Tallinn ATC Improvement project (Estonia)

T-ATSU : Transferring ATS Unit (ICAO)

Tau : Range / Range rate (TCAS)

TAWS : Terrain Awareness and Warning System

TAX : Taxi or Taxiing

TB : Tellback

TBA : Tellback Area

TBA : To Be Advised

TBD : To Be Determined (Defined)

TBN : To Be Notified

TBS : Telephone Back-up System (VCS)

TBO Time between Overhauls

TBS To Be Specified

TC : Typical Changes

TC : Tactical Controller

TC : Transit Corridor

TC : Transition Concept

TC : Tropical Cyclone

TC/OC : Technical Control and Operational Control

TCA : Terminal Conflict Alert

TCA Terminal Control Area

TCA : Track Continuity Area

TCA : Track-to-chain Association

TCA : Traffic Count Area

TC-APD : Tactical Controller Activity Predictor Display

TCAS : Traffic Alert and Collision Avoidance System

TCB : Training Co-ordination Board (Eurocontrol, IANS)

TCC : Thrust Control Computer

TCC : Traffic Control Centre

TCDP : Technical Control Data Processor

TCG : Training Consultation Group / Groupe consultatif sur la formation

T-Channel : Time Division Multiple-Access Channel

TCL : Terminal Control

TCOP : Transfer Coordination Point

TCP / IP : Transmission Control Protocol / Internet Protocol

TCP : Transmission Control Protocol

TCPU : Touch Panel Central Processing Unit (ACS)

TCT : Technical Control Terminal

TCU : Towering Cumulus (meteo)

TCWP : Threshold Crossing Way-point

TDA : Track Detection Analysis

TDB : Track Data Block

TDCE : Telephone Distribution and Control Equipment

TDCP : Test Display and Control Panel

TDD : Time Division Duplex

TDF : Total Delayed Flights

TDF : Training and Development Facility

TDH : Training Development and Harmonisation (IANS)

TDM : Time Division Multiplexing

TDM : Total Delay in Minutes

TDMA : Time Division Multiple Access

TDO : Tornado

TDOP : Time Dilution Of Precision

TDR : Target Data Receiver

TDR : Track Drop Rate

TDR : Traffic Data Record

TDS : Tactical Data System

TDS : Test and Development Sector

TDSP : Training Documentations and Special Projects

TDWR : Terminal Doppler Weather Radar (TDWR located and classifies windshear conditions and provides advisories in the terminal area. These data are available through the DLP)

TDZ : Touchdown Zone

TDZL : Touchdown Zone Lights

TDZ LGT : Touchdown Zone Lights

TE : Time of Entry

TE : Lithuanian Airlines (airline)

TEC : Technical ATM Systems and Logistics Support

TEC : Total Electron Content

TEC, TECH : Technical

TECR : Technical Reason

TEL : Telephone

TELIA : (Swedish) Telecommunications Provider

TEMP : Temperature

TEMP : Test and Evaluation Master Plan

TEMPLE : Terminal Management and Planning Equipment

TEMPO : Temporary or Temporarily

TEN : Trans-European Network

TEND : Trend Forecast

TEN(-T) : Trans European Network (-Transport) (European Commission funding)

TEPS : Trajectory Editor and Problem Solver

TER : Terminated

TERPS : Standard for Terminal Instrument procedures

TES : Trials End System project

TF : Task Force or Touch Field (VCS)

TF : Track to a Fix (ARINC 424 Path Terminator)

TFA : Test Flight Analysis

TFACS : Task Force on Assessment Centre Standards

TFC : Traffic

TFCCC : Task Force Common Core Content .

TFD : Thin Film Diode

TFDATS : Delegation of ATS Task Force (ANT)

TFIS : Traffic Flow Investigation System

TFM Traffic Flow Management

TFMS : CFMU/ENGD - Technical Facilities & Management Support Section

TFR : Temporary Flight Restriction

TFR : Tactical Flight Record

TFT : Thin Film Transistor

TFTR : Terrain Following Training Route

TFTS : Terrestrial Flight Telephone System

TF-TTM : TF on Technology Based Training Tools and Methods

TFV : Traffic Volume

TG : Thay Airways (airline)

TG : Task Group

TGDLP : Trials Ground Data Link Processor

TGF : Traffic Growth Factor

TGL : Temporary Guidance Leaflet (JAA)

TGL : Touch and Go Landing

TGT : Target

TGS : Taxiing Guidance System

TH-CSF : Thomson CSF

THD : Total Harmonic Distortion

THDG : True Heading

THN : Thin

THR : Threshold

THR : Thrust

THRL : Treshold Lights

THRU : Through

TIA : Traffic Information Area

TIAS : True Indicated Airspeed

TICTAC : Time Constrained Trajectory Computation : Trajectory predictor

TID : Touch Input Device

TIDE : Tactical and IFPS Development Environment

TIDmn : Track Initiation Delay Mean

TIDsd : Track Initiation Delay Standard Deviation

TIL : Until

TIM : Transfer Initiation Message

TIMERS : Traffic Intelligence for the Management of Efficient Runway Scheduling

TIP : Until past….(place)

TIP : Touch Input and Display Panel

TIS : Time to Insert the Sequence

TIS : Traffic Information Service or Sector

TITLE : Message Name

TIZ : Traffic Information Zone

TK : Turkish Air (airline)

TKE TrackAngle Error

TKOF : Take-off

TKX : Crosstell Tracker

TL : Tans Mediterranean Airways (airline)

TL : Transition Line (Level)

TL : Traverse Level

TL… : Until (meteo)

TLA : Title Line Area

TLOF : Touchdown and lift-off area

TLPD : Traffic Load Prediction Device

TLS : Tactical Load Smoother

TLS : Target Level of Safety

TLV : Type Length Value

TLX : Task Load Index (NAA)

TM : Traffic Management

TMA : Terminal Manoeuvring Area ; Terminal Control Area (ICAO)

TMA : Traffic Management Advisor

TMA-TC : TMA Tactical Controller

TMC : Technical Monitoring and Control

TMC : Terminal Control Centre

TMC : Thrust Management Computer

TMCS : Technical Maintenance and Control System

TMCS : Technical Monitoring and Control System (RMCDE / MADAP)

TMCU : Tower Main CWP Unit

TMF : Thrust Management Function

TMG : Tourig Motor Glider

TMPA : Traffic Management Program Alert

TMRR : Temporary Minimum Disk Route

TMS : TeleManagement System

TMS : Tools Manager Server

TMS : Traffic Management System

TMSSG : Top Management Structure Sub-Group

TMZ : Transponder Mandatory Zones

TMU : Traffic Management Unit (FAA)

TN : Track Number

TN : Trajectory Negociation

TN : True Negative

TN True North

TN : Tunisia (ISO Countries Codes)

TNA : Turn Altitude

TNAV : Time Navigation

TNH : Turn Height

TO : Takeoff

TO : Technical Order

TO : Time Over

TO : To…(place)

TOA : Terms of Agreement

TOAST : Team Oriented ATC Simulator Training

TOAST : Technical, Operational and System Tests

TOC : Technical Operators Centre

TOC : Top Of Climb

TOC : Transfer Of Control

TOD : Top Of Descent

TODA : Take Off Distance Available (ICAO)

TODAH : Take Off distance available, helicopter

TOGA : Takeoff/Go-Around

TO EPR Takeoff Engine Pressure Ratio

TO Nl Takeoff Engine Fan Speed

TOP : Cloud Top

TOPL : Take Off Performance Limits

TOR : (Swedish) Briefing System (MET, Flight Plans)

TOR : Terms Of Reference

TORA : Take Off Run Available

TORCH : Technical, Economical and Operational Assessment of an ATM Concept Achievable from the Year 2005

TOS : Traffic Orientation Scheme

TOSCA : Testing Operational Scenarios for Concepts in ATM

TOT : Take-Off Time

TOT : Time Over Target

TOT : Total

TOWP : Take Off Waypoint

TP : TAP Air Portugal

TP : Trajectory Prediction ; Transport Protocol

TP : Turning Point

TP : True Positive

TP-4 : Transport Protocol, class 4

TPAS : Trajectory Predictor based Aircraft Simulator

TPC : Tactical Pilotage Charts

TPD : Transition Programme Description

TPDR : Transponder

TPDU : Transport Protocol Data Unit (RMCDE)

TPINS : Transition Plan For The Implementation Of The Navigation Strategy

TPL : Task Priority List

TPL : Transport Layer

TPS : A mono-radar track format

TPT : Touchdown Point

TQM : Total Quality Management

TR : Test Report

TR : Track

TR : Transbrasil (airline)

TR : Turkey

TRA : Required Time for Arrival

TRA : Temporary Reserved Airspace/Area

TRA : Traffic (type)

TRA : Thrust Reduction Altitude

TRACON : Terminal Radar Approach Control

TRAINDEV2 : Integrated Eurocontrol Training Design Tool

TRAMON : Traffic Monitoring

TRANS : Transition or Transmit or transmitter

TRANSCOM : French public telecommunication network

TRAP : Technical Review and Audit Plan

TRB : Tracker Ball

TRB : Transportation Research Board (4-States)

TRD : Transit Routing Domain

TRE : Type Rating Examiner

TREE : Transit Radiation effects on Electronic Equipment

TREN : Transport and Energy (General Directorate EU)

TRF : Total Regulated Flights

TRG : Training

TRI : Type Rating Instrucor

TRK : Track (to a NAVAID)

TRL : Transition Level

TRM : Team Resource Management

TRML : Terminal

TRMTFII : Team Resource Management Task Force II

TRNG : Training

TROL : Tapeless, Rotorless On Line

TROP : Tropopause

TRP : Thrust Rating Panel

TRR : Test Readiness Review (MAS - ODS)

TRS : Time to Remove from the Sequence

TRSB : Time Reference Scanning Beam

TRSN : Transtition

TRTO : Type Rating Training Organization

TRU : True

TRUST : Terminal Routes Using Speed-Control Techniques (MITRE, CAASD)

TRY/PFL : Try Input of Planned Flight Level

TS : Technical Specification

TS : Technical Supplement

TS : Test Specification

TS : Thunderstorm (meteo)

TS : Track Server

TS : Transport Service User

TSA : Temporary Segregated Area

TSAP : Transport Service Access Point

TSCU : Tower Support CWP Unit

TSD : Time Sequence Diagram

TSD : Traffic Situation Display (FREER)

TSDD : Test Synthetic Dynamic Display

TSDF : Time Slot Duty Factor

TSDG : Technical and System Development Group

TSE : Total System Error

TSG : Training Sub-Group

TSGE : Tri-Service Group on Communications and Electronics

TSIKADA : Russian four-satellite civil navigation system

TSIKADA-M : Russian six-satellite military navigation system

TSNT :Transient

TSO : Technical Service/Standard Order

TSO : Time Sharing Option

TSP : HRS Training Sub-Programme (EATM)

TSR : Terminal Surveillance Radar

TSr : Track Swop Rate

TSRV : Transport System Research Vehicle (Facility)

TSS : Target Software Server

TSS : Traffic Sub-System

TST : Test

TST : Trajectory Support Tool

TSTMS : Thunderstorms

TSU : Technical Support Unit

TT : Tele Typewriter

TT : Total Temperature

TTA : Tactical Training Area

TTC : Telemetry and Telecommand Centre

TTF : Total Flights

TTG : Time To Go

TTL : Transistor-Transistor Logic

TTP : TCAS II Transition Program

TTR : Target Tracking Radar

TTS : Time To Station

TTS : Trails Transport Service (ATN)

TTW : Time To Waypoing

TTY : Teletype Telex Machine

TU : Tunis Air

TU : Temps Universel

TU : Turkey

TUM : Time Update Message

TURB : Turbulence

TV : Television

TVE : Total Vertical Error

TVOR : Terminal VOR

TWDL : Two-Way DataLink

TWG : Training Working Group

TWI : Terminal Weather Information

TWIP : Terminal Weather Information for Pilots

TWN : Tactical Weather Network

TWP : Technical Work Programme in the Air Navigation Field (ICAO)

TWR : Tower Control Unit (Aerodrome Control Tower)

TWS : Technical Watch Supervisor

TWS : Terminal Weather Service (ICAO)

TWS : Track While Scan

TWT : Travelling Wave Tube

TWY : Taxiway

TWYL : Taxiway Lights

TX / RX : Transmitter / Receiver (Radar head)

Tx : Next waypoint ETA

Tx : Teletype

TX : Transmitter Station

Txt : Text

TXWY : Taxy Way

TYP or TYPE : Aircraft Type

TYPH : Typhoon

t (Tau) : Symbol for time



U : Upward (tendency in RVR during previous 10 minutes)

U/L : Upper / Lower - Upper Link

U/S : Unserviceable

UA : Ukraine (ISO Countries Codes)

UA : United  Airlines (airline)

UAB : Until Advised By

UAC : Upper Area Control (Centre)

UACC : Upper Airspace Control Centre

UAP : User Application Profile (RMCDE)

UAR : Upper Air Route

UAS : Upper Airspace

UAV : Unmanned Aerial Vehicle

UCDU : Universal Control and Display Unit

UDA : Upper Advisory (Service) Area

UDF : Ultra High Frequency Direction Finding

UDF : Unducted Fan

UDRE : User Differential Range Error

UEATMS : Uniform European Air Traffic Management System

UEO : Union de l'Europe Occidentale / Western European Union (=WEU)

UERE : User Equivalent Range Error

UFF : Ultimate Fallback Facility

UFN : Until Further Notice

UFO : Unidentified Flying Object

UHDT : Unable Higher Due Traffic

UHF : Ultra High Frequency

UIC : Unit Identity Code

UIC : Upper Information Centre

UIECS : Union of International and European Civil Servants

UIMS : User Interface Management System

UIR : Upper (flight) Information Region

UIVE : User Ionospheric Vertical Range

UK : Air UK (airline)

UK : United Kingdom (ISO Country Code)

UKAATS : UK Advanced ATS

UKD : Upgrade ZKSD and coupling with DERD-X

Ukraviatsia : Ukrainian State Aviation Administration

UkSATSE : Ukrainian State Air Traffic Services Enterprise

UL : Air Lanka (airline)

UL : Ultra Light glider

UL : Upper Link (ATS route indication) or Uplink

ULM : Ultra Light Motorized

ULR : Ultra Long Range

UMA : Unmanned Aircraft

UNA : Unable

UNAP : Unable to Approve

UNAVBL : Unavailable

UNHCR : United Nations High Commissioner for Refugees

UNINC : Unusual Incidents

UNL : Unlimited

UNLGT : Unlighted

UNMKD : Unmarked

UNMNT : Unmonitored

UNO : United Nations Organization

UNREL : Unreliable

UNT : Until

UNUSBL : Unusable

UPD : Update Plan Divergence

UPP : Upper airspace

UPS : Uninterrupted Power Supply / System

UPSEL : Update Selection

URA : User Range Accuracy

URANIA : UpRading Athens Terminal Area aNd Interfacing to the PALLAS ACC system

URB : CFMU – User Relations Bureau

URD : User Requirements Document

URE : User Range Error

URET : User Request Evaluation Tool (MITRE Conflict Detection product)

URG : Urgency (ICAO)

URP : User Requirements Phase

URTF : User Requirements Task Force US USAir

USAF : US Air Force

USAREUR : US Army (Representative) in Europe

USART : Universal Synchronous / Asynchronous Receiver/Transmitter

USCG : United States Coast Guard

USD : US Dollar

USFSPEI : Union Syndicale Fédérale of the European and International Public Services

USG : US Government

USNO : US Naval Observatory

USSPE : Union Syndicale - Service public européen / European Public Service Union (=EPSU)

UT : Universal Time

UTA : Upper (Traffic) Control Area

UTA : Upper Transition Area

UTC : Universal Time Co-ordinates

UTP : Unshielded Twisted Pair

UUP : Updated (Airspace) Use Plan

UVA : Utility Value Analysis




V : Velocity

V : Volt

V1 : Take-off decision speed

V2 : Minimum take-off safety speed at 35’

V&V : Validation & Verification

V/M : Volts-per-meter

V/S : Vertical Speed/Vertical

V/STOL : Vertical or Short Take-Off and Landing

Vx : Version x

VA : Heading to an Altitude (ARINC 424 Path Terminator)

VA : Design Maneuvering Speed

VA : Vulcanic Ash (meteo)

VAA : Value Added Applications

VAC : Volts, Alternate Current

VAC : Visual Approach and Landing Chart

VAFOR : Very Advanced Flight Data Processing System Operational Requirement

VAFORIT : VAFOR Implementation

VALFAC : Validation Facility (avionics test and simulation facility)

VAN : Value Added Network

VAP : Visual Aids Panel

VAP : Volumetric Airspace Penetration

VAPS : Virtual Applications Programming Software

VAPS : Visual Approaches

VAQ : VHF Avionics Qualification

VAR : Variation Magnectic

VAR : Volt-amps Reactive

VAR : VCS, Ancillaries and Remote control system

VAR : Visual-aural Radio Range

VAS : Vienna ATCC Data Processing System

VAS : Vortex Advisory System

VASI : Visual Approach Slope Indicator

VASIS : Visual Approach Slope Indicator System

VAT : Value Added Tax

VAW : Vertical Assistance Window (ODID)

VBF(LO) : Flaps up minimum buffet speed at current maneuver load factor minus altitude dependent variable

VBX : Visual Basic Extensions

VC : Design Cruising Speed

VC : In Vicinity (meteo)

VC : Virtual Circuit

VD : Design Diving Speed

VD : Heading to a DME distance

VDC : Volts, Direct Current

VDEV : Vertical Deviation

VCCS : Voice Communication and Control System

VCI : Voice Change Instruction, a message of the ACM service

VCMAX : Active Maximum Control Speed

VCMIN : Active Minimum Control Speed

VCO : Voltage Controlled Oscillator

VDP : Visual Descent Point

VCR : Visual Control Room

VCRI : Verification Cross Reference Index

VCS : Voice Communications System

VCSS : Voice Communications Switching System

VCSTF, VCS-TF : Voice Communications System Specification Task Force

VCY : Vicinity

VD : Heading to a DME Distance (ARINC 424 Path Terminator)

VD : Vertical Dispersal

VDC : Direct Current Voltage

VDF : Very high frequency Direction Finding station

VDF : VHF Direction Finder

VDGS : Visual Docking Guidance System

VDL : VHF Digital/Data Link

VDL/4 : VHF Self-organising TDMA (STDMA) Data Link Mode 4

VDOP : Vertical Dilution Of Precision

VDR : VHF Data Radio

VER : Vertical

VHFAMS : Very High Frequency Aeronautical Mobile Services

VDR : VHF Digital/Data Radio

VDU : Video (Visual) Display (Distribution) Unit

VDX : Videotext

VEL : Velocity Leader

VENSIM : Ventana Simulator

Ver : Vertical

VESDA : Very Early Smoke Detection Apparatus (Fire alarm system)

VF : Voice Frequency

VFE : Flaps Extended Placard Speed

VFOP : Visual Flight Rules Operations Panel

VFR : Visual Flight Rules

VFXR(R) : Flap Retraction Speed

VFXR(X) : Flap Extension Speed

VG : Ground Velocity

VG : Validity Generalisation

VG/DG : Vertical Gyro/Directional Gyro

VGND : Ground Velocity

VGS : VHF Datalink Ground Station

VH : Maximum Level-flight Speed with Continuous Power

VHF : Very High Frequency

VHF R/T : Very High Frequency Radio/Telephony

VHF-OTF : VHF Operations Task Force

VHRR : Very High-Resolution Radiometer

VHSIC : Very High Speed Interated Circuit

VIA : By way of

VICE : Instead/Versus

VID : Visual Image Display

VIP : Very Important Person

Vis : Visual aids

VIS : Visibility

VISSR : Visible Infrared Spin Scan Radiometer

VL : Very Low ATC Complexity

VLS : Lowest Selectable Airspeed

VLBI : Very Long Baseline Interferometry

VLCT : Very Large Capacity Transport

VLE : Landing Gear Extended Placard Airspeed

VLF : Very Low Frequency

VLO : Maximum Landing Gear of Operating Speed

VLOF : Lift-off Speed

VLR : Very Long Range

VLSI : Very Large Scale Integration

VLUT : Video Look-Up Table

VM : Regional Airlines France (airline)

VM : Heading to a Manual Termination (ARINC 424 Path Terminator)

VMAX : Basic Clean Aircraft Maximum CAS

VMC : Visual Meteorological Conditions

VMC : Minimum Control Speed with Critical Engine Out

VM(LO) : Minimum Maneuver Speed

VMMS : VHF Multi-frequency Management Unit

VMIN : Basic Clean Aircraft Minimum CAS

VMO : Velocity Max Operating

VN : Valid Negatives

VNAV : Vertical Navigation (provides computer description of aircraft's speed and altitude that can be tracked by autoflight system)

VNE : Never-exceed Speed

VNO : Maximum Structural Cruising Speed

VNSE : Vertical Navigation System Performance

VO : Tyrolean Airways (airline)

VOI : Volume of Operational Interest

VoL : Value of Life

VOL : Volume

VOLMET : Meteorological Information for Aircraft in Flight

VOLMET : Routine Weather Reports Broadcast on VHF

VOM : Volt-ohm-milliammeter

VOR : VHF OmniRange Navigatgion System (ground navigational aid that can provide display of aircraft position relative to course through selected ground navigational radio transmitter)

VOR/DME, VOR-DME : VHF Omni-directional Ranging / Distance Measurement Equipment


VOT : VHF Omnidirectional Range Test – VOR-reciever test facility

VOT : VOR airborne equipment test facility

VP : Vertical Profile

VPAE : Vertical Profile Angle Error

VPATH : Vertical Path

VPIP : Vertical Intercept Point

VP : Valid Positives

VPD : Vertical Polar Diagram

VR : Cabo Verde Airlines (airline)

VR : Heading to a VOR Radial (ARINC 424 Path Terminator)

VR : Takeoff Rotation Velocity

VRB : Variable (meteo)

VREF : Approach Reference speed

VRRS : Voice Recording and Display System

VRS : Voice Response System

VS : Stalling Speed

VS : Vocational Stabilisation

VS : Design Speed for Maximum Gust Intensity

VSA : By Visible reference to the ground

VSAT : Very Small Aperture satellite Terminal

VSBY : Visibility

VSCS : Voice Switching and Control System

VSD : Vision and Strategy Document

VSI : Stalling Speed in a Specified Flight Configuration

VSI/TRA : Vertical Speed Indicator/Traffic, Resolution Advisory

VSIG : Vertical Separation Implementation Group

VSM : Vertical Separation Minimum

VSO : Stalling Speed in the Landing Configuration

VSP : Variable System Parameter

VSP : Vertical Speed

VSSE : Intentional One Engine Inoperative Speed is a minimum speed selected by the manufacturer for intentionally rendering one engine inoperative in flight

VSSG : Vertical Separation Sub-Group

VSTOL : Vertical or Short Takeoff and Landing

VSWR : Voltage Standing Wave Ratio

VTK : Vertical Track Distance

VTN : Voice Telecommunications Network

VTOL : Vertical Take-Off and Landing

V/TRK : Vertical Track

VTR : Variable Takeoff Rating

VTS : Vessel Traffic Services

VTT : Vertical Threshold Test

VU : Utility Speed

VVD : Vertical View Display

VWF : Video For Windows

VX : Speed for Best Angle of Climb

VY : Speed for Best Rate of Climb

Vl : Critical Engine Failure Velocity (Takeoff Decision Speed)

V2 : Takeoff Climb Velocity




w : Wake Vortex category

W : Watt

W : West

W : White

W2 : World Airlines (airline)

W/MOD : With Modification of Vertical Profile

W/STEP : With Step Change in Altitude

WAA : Wide Area Augmentation

WAC : World Aeronautical Charts

WAAS : Wide Area Augmentation System

WAC : World aeronautical chart-ICAO 1:1.000.000

WACS : Wireless Airport Communications Systems

WAD : Wide Area Differential

WAD-GNSS : Wide Area Differential GNSS

WADGPS : Wide Area Differential GPS

WAFC : World Area Forecast Centre

WAFS : World Area Forecast System

WAGE : Wide Area GPS Enhancement program

WAN : Wide Area Network

WARC : World Administrative Radio Communication Conference

WARC-MOB : World Administrative Radio Communication Conference - Mobile Communication.

Waypoint : Position in space usually on aircraft's flight plan

WB : Westbound

WBAR : Wing Bar Lights

WBC : Weight and Balance Computer

WBS : Weight and Balance System

WBS : Work Breakdown Structure

WC : Waypoint Capture

WCA : Wind Correction Angle

WCL : Weather Channel

WDI : Wind Directon Indicator

WDSPR : Widespread

WDW : Window

WEA : Whole ECAC Area

WEF : With Effect From or Effective From

WEU : Western European Union (military matters)

WG : Working Group

WGCS-84 : World Global Co-ordinate System 1984

WGPDS : Word and Graphics Process Documentation System

WGR : Working Group on Route Charges

WGRSG : Sub-Group of the Charges Working Group

WGS : World Geodetic System

WGS : World Geodetic Survey

WGS-72 : : World Geodetic System/Standard (1972)

WGS-84 : World Global System 84, which is the ICAO recommended parameterisation of an ellipsoid earth model


WI : Within

WID : Width

WIE : With immediate effect or effective immediately

WILCO : Will Comply

WINDR : Wind Direction

WINDMG : Wind Magnitude

WINTEM : Forecast upper wind and temperature

WIP : Work in Progress

WIPO : World Intellectual Property Organisation

WIRS : Wide Area Reference Stations

WKDAYS : Monday through Friday

WKEND : Saturday and Sunday

WKN : Weaken or Weakening

WKSP : Transmission Centres Workshop ; Data Transmission Workshop

WLA : WorkLoad Assessment

WM : Working Memory

WMB : Window Management Button

WMO : World Meteorological Organisation

WMSC : Weather Message Switching Center

WMSCR : Weather Message Switching Center Replacement

WND : Wind

WNW : West-North-West

WO : Without

WO : World Airways

WOC : Wing Operations Centre

WOD : Word Of the Day

WORM : Write Once, Read Many

WP : Way-Point

WP : Work Package

WP : Work Programme

WP : Working Paper

WP : Working Position

WPD : Work Programme Document

WPL : Work Package Leaders

WPM : Words Per Minute

WPn : First waypoint in the next sector

WPP : Working Position Processor

WPT : Way point

WRC : World Radio-communications Conferences

WPs : Working Positions

WPx : Next waypoint on the flight plan

WRNG : Warning

WS : Work Station

WS : Watch Supervisor

WS : Wind Shear

WSC : West Sector Co-ordinator

WSFO : Weather Service Forecast Office

WSO : Weather Service Office

WSPD : Wind Speed

WSR : Wet Snow on Runway(s)

WSW : West-South-West

WT : Weight

WTC : Wake Turbulence Category

WTSPT : Waterspout

WTR : Water on Runway(s)

WTWS : Windshear and Turbulence Warning System

WWW : World Wide Web (INTERNET)

WX : Weather

WX DEF : Weather Deviation

WXMS : Weather Mapping System

WXR : Weather Radar




X : Cross

(X) : Irregular

X-BAND : The frequency range between 8000 and 12500 MHz

X-Wind : Cross Wind

X25 : Standard protocol in telecommunications

X.25 : Packet Switched Data Network

XAP : Crossing Alternate Proposal Message

XASM : Cancel Assume

XASP : Extended AIRCOM Service Processor

XBAR : Crossbar (of approach lighting system)

XBRIGHT : Cancel highlighting

XCD : Exceptional Conditions

XCM : Crossing Request Cancelation Message

XCONF : Delete CONFlict

XCOORD : Cancel Co-ordination

XCOP : Exit Co-ordination Point

XCOR : Cancel Correlation

XCVR : Transceiver

XECM : Cancel Executive Controller Message

XEU : European Currency Unit (ECU)

XEXPLT : Cancel Extrapolation

XFDM : Cancel FDM

XFL : Exit Flight Level (from a sector or volume of airspace)

XFR : Transfer

XFRQ : Cancel FreQuency message

XGEO : Cancel GEO

XHOLD : Cancel Hold

XIFL : Cancel Intermediate Flight Level

XIN : Crossing intentions

XIN : Military Crossing Intention Notification Message

XLTR : Translater

XM : External Master


XMIT : Transmit

XMITR : Transmitter

XNG : Crossing

XTRK : Cross Track Error

XPD : ATC Transponder (also XPDR, XPNDR, TPR)

XPDR : Transponder

XPNDR : Transponder

XMT : Excluding (Messager)


XOFF/PDR : Cancel Off Predetermined Route

XPLN : Cancel Plan

XPT : Exit Point of a sector (ODID)

XQDM : Cancel QDM

XRA : Crossing Request Answer (SEROS / MADAP)

XRQ : Airspace Crossing Request Message (Airspace Crossing Dialogue)

XS : Atmospherics

XSFL : Cancel Supplementary Flight Level


XSSRBRIGH : Cancel SSR highlight

XSTAT : Cancel Statistics

XTDCP : Cancel Test Display Control Panel

XTEDD : Cancel Test Electronic Data Display

XT : Air Exel (airline)

XTK : Cross Track Distance

XTK : Crosstrack (cross track error)

XTRK : Cancel Track

XTT : Across Track Tolerance

XX… : Heavy (used to qualify weather phenomena such as rain, e.g. heavy rain = XXRA)

XY : Ryan Air




Y : Yellow

YCZ : Yellow caution zone (runway lighting)

Yd : Yards

YD :Yaw Damper

YR : Your

YSAS : Yaw Stability Augmentation System

YU : The Federal Republic of Yugoslavia (ISO Country Code)



Z : Zulu (GMTtime)

ZA : South Africa (ISO Country Code)

ZCZC : Start of a message (Radioteletype)

ZFW : Zero Fuel Weight

ZNY : New York Air Route Traffic Control Center

ZOC : Zone of Convergence

ZOE : Zone d'Echange

ZULU : Greenwich Mean Time or Universal Time Coordinated UTC

ZVF : Zero Velocity Filter


Мы постоянно совершенствуем и добавляем новую информацию.

PayPal, Удобная оплата
Master Card, Visa, Удобная оплата

Tel: +79221123444

WhatsApp, Telegram


2015-2020 © Ltd "Aviation Anatomy"

  • White Facebook Icon
  • White Vkontakte Icon
  • White Instagram Icon