Glossaire

Explicatif des abréviations employées:

    • A/A: Air to air
    • A/G: Air/Ground
    • AAA: Aesean Airline Association
    • AAC: Airline Administrative Communication
    • AAIB: Air Accidents Investigation Branch (UK)
    • AALPBH: Association of Airline Pilots in Bosnia & Herzegovina
    • AAM: Airbus Asset Management
    • AAME: Association of Aviation Medical Examiners
    • AAP: IFALPA Accident Analysis & Prevention Committee
    • AAPA: Association of Asia Pacific Airlines
    • AASA: Air Lines Association of Southern Africa
    • AASC: Airport Authorities Steering Committee
    • AAT: Aeronautics and Air Transport
    • AATF: Airworthiness Assurance Task Force
    • ABET: Airspace Behavioral Engineering Technology
    • ABM: Abeam
    • ABV: Above
    • AC: Altocumulus
    • ACA: Austrian Cockpit Association
    • ACAC: Arab Civil Aviation Council
    • AC: Advisory Circular
    • ACAMS: Aircraft Condition Analysis and Management System
    • ACARE: Advisory Council for Aviation Research and Innovation in Europe
    • ACARS: Aircraft Communications, Addressing, and Reporting System
    • ACARS: MU Aircraft Communications, Adressing and Reporting Systems Management Unit
    • ACAS: Airborne Collision Avoidance System
    • ACCC: Australian Competition and Consumer Commission
    • ACCS: Air Command and Control System
    • ACDAC: Asociacion Colombiana de Aviadores Civiles (Columbia)
    • ACG: ATN/CNS Consultancy Group
    • ACH: Air traffic control Flight Plan Change
    • ACI : Airports Council International
    • ACIPLA: Asociacian Civil de Pilotos de Lineas Aereas (Uruquay)
    • ACK: Acknowledge
    • ACL: Air Traffic Control Clearance (Service)
    • ACM: Acceptable Means of Compliance
    • ACNZ: Airways Corporation of New Zealand
    • ACRPWG: Aircraft Crash Recovery Procedures Working Group
    • AD: Aerodrome
    • ADEP: Aerodrome of Departure
    • ADES: Aerodrome of Destination
    • ADF: Automatic Direction Finder
    • ADIRS: Air Data Inertial Reference System
    • ADIS: Automatic dependent surveillance and Data Link Interim System
    • ADISP: Automated Data Interchange Systems Panel
    • ADIZ: Air Defence Identification Zone
    • ADM: Aeronautical Decision Making
    • ADO: IFALPA Aircraft Design & Operation Committee
    • ADREP: Aircraft Accident/Incident Data Reporting System (ICAO)
    • ADS: Automatic Dependent Surveillance
    • ADS-B: Automatic Data Surveillance Broadcast
    • ADS-B Out: Automatic Dependent Surveillance-Broadcast Out
    • ADS-C: Automatic Data Surveillance Contract
    • ADSP: Automatic Dependent Surveillance Panel (ICAO)
    • AEA: Association of European Airlines
    • AEEC: Airlines Electronic Engineering Committee
    • AEROSAT: Aeronautical Satellite Council
    • AFA: Association of Flight Attendants
    • AFC: Air Traffic Control Frequency Change (Service)
    • AFCAC: African Civil Aviation Commission
    • AFCS: Automatic Flight Control System
    • AFIS: Aerodrome Flight Information Service
    • AFM: Aeroplane Flight Manual
    • AFN: Air traffic Services Facilities Notification
    • AFP: Area Forecast Panel
    • AFRAA: African Airlines Association
    • AFS: Aeronautical Fixed Service
    • AFTN: Aeronautical Fixed Telecommunications Network
    • AGA: Aerodromes, Air Routes and Ground Aids
    • AGAS: European Action Group for ATM Safety
    • AGE: IFALPA Aerodrome & Ground Environment Committee
    • AGL: Above Ground Level / ASFC : Above surface
    • AHRS: Attitude Heading Reference System
    • AI: Application Interface
    • AIC: Aeronautical Information Circular
    • AIDC: ATS Interfacility Data Communication
    • AIDS: Airborne Integrated Data Systems
    • AIG: Accident Investigation & Prevention (ICAO Divisional)
    • AIM: Aeronautical Information Management
    • AIM-FANS: Airbus Interoperable Modular FANS
    • AIMS: Aircraft Information Management System
    • AIP: Aeronautical Information Publication
    • Air: Report (message designator)
    • AIRAC: Aeronautical Information Regulation & Control
    • AIRC: Aeronautical Information & Control
    • AIRCOM: Air Communications
    • AIREP: Plain language form of Air Report
    • Airspace and Traffic Management
    • AIRSTRM: Assuring the Implementation of Regulations for the Safe Transport of Radio-active Materials
    • AIS: Aeronautical Information Services
    • AIXM: Aeronautical Information eXchange Model
    • AL: Approach Lights
    • ALPA: Asociacion de Pilotos de Lineas Aereas (Argentina)
    • ALPA: Japan Air Line Pilots’ Association of Japan
    • ALPA-A: Air Line Pilots’ Association of Armenia
    • ALPA-E: Air Line Pilots’ Association of Ethiopia
    • ALPA-FYROM: Air Line Pilots’ Association of The Former Yugoslav Republic of Macedonia
    • ALPA-Int: Air Line Pilots’ Association – International
    • ALPA-K: Air Line Pilots’ Association of Korea
    • ALPA-M: Airline Pilots’ Association – Malta
    • ALPAP: Air Line Pilots’ Association of the Philippines
    • ALPA-S: Air Line Pilots’ Association – Singapore
    • ALPA-SA: Air Line Pilots’ Association – South Africa
    • ALPA-SL: Air Line Pilots’ Association of Slovenia
    • ALPL: Association Luxembourgeoise des Pilotes de Ligne
    • ALR: IFALPA’s Airport Liaison Representative Program
    • ALRS: Approach Lighting System
    • ALT: Altitude (above mean sea level)
    • ALTN: Alternate aerodrome
    • AMA: Area Minimum Altitude
    • AMC: Air Traffic Control Microphone Check
    • AMCP: Aeronautical Mobile Communications Panel
    • AMDA: Airlines Medical Directors Association
    • AMOSA: Association of Aviation Maintenance Organisations of Southern Africa
    • AMPL: Association Marocaine de Pilots de Ligne
    • AMSL: Above Mean Sea Level
    • AMSS: Aeronautical Mobile Satellite System
    • AMSSP: Aeronautical Mobile Satellite Service Panel
    • ANC: Air Navigation Commission
    • ANConf: Air Navigation Conference
    • ANPAC: Associazione Nazionale Piloti Aviazione Commerciale (Italy)
    • ANPP: Air Navigation Plan Publication
    • ANSP: Air Navigation Service Provider
    • ANT: Air Navigation Team (Eurocontrol)
    • AO: Aircraft Operator
    • AOA: Aircrew Officers Association
    • AOAS: Advanced Oceanic Automation System
    • AOC: Airline Operational Control
    • AOCI: Airport Operators Council International
    • AOPG: Aerodrome Operations Planning Group
    • APA: Allied Pilots Association
    • APA(CV): Air Line Pilots Association (Cape Verde)
    • APANPIRG: Asia/Pacific Air Navigation Planning and Implementation Regional Group APATSI Airport/air traffic system interface
    • APDSG: Airspace Planning & Development Sub-Group
    • APEC: Aircraft Performance Evaluation & Certification
    • APG: Asosiasi Pilot Garuda
    • APGSL: Air Line Pilots’ Guild of Sri Lanka
    • API: Advanced Passenger Information
    • API: Application Programming Interface
    • APIRG: African Planning and Implementation Regional Planning Group
    • APLRIM: Association des Pilotes de Lignes de Mauritanie
    • APM: Accident Prevention Manual
    • APN: Apron
    • A-PNT: Alternative Positionning Navigation and Timing
    • APP: Approach Control
    • APPA: Asociacion Profesional de Pilotos Aviadores de Costa Rica
    • APPLA: Associacao Pilotos Portugueses Linha Aerea (Portugal)
    • APU: Auxiliary Power Unit
    • APV: Approach Procedures with Vertical guidance
    • AQM: Aircom Quality Performance
    • AR: Administrative Recommendation
    • ARAC: Aviation Rulemaking Advisory Committee (FAA)
    • ARASCNAC: Air traffic services Routes for Aircraft with Self-contained Navigational
    • Capabilities
    • ARC: Area Chart
    • ARC:Aviation Rulemaking Committee
    • ARCP: Aerodrome Reference Code Panel
    • ARINC: Aeronautical Radio INCorporated
    • ARITRM: Assessment of the Radiological Impact from the Transport of Radioactive Materials
    • ARM: Airspace Risk Model
    • ARO: Air traffic services reporting office
    • ARP: Aerodrome Reference Point
    • ARQ: Automatic error correction
    • ARST: Arresting (part of an aircraft arresting system)
    • AS: Altostratus
    • ASA: Airservices Australia
    • ASAP: Aviation Safety Action Programme
    • ASC: Aviation Safety Council Ascend to or ascending
    • ASCOS: Aviation Safety and Certification of new Operations and Systems
    • ASD: Air Situation Display
    • ASDA: Accelerate Stop Distance Available
    • ASE: Altimetry System Error
    • ASECNA: Agence pour la Securité de la Navigation en Afrique et à Madagascar (Agency for Security and Navigation for Africa and Madagascar)
    • ASIP: AVPAC (Aviation VHF-Very High Frequency- Packet Communication) Simple Interface Protocol
    • ASM: Air Space Management
    • AsMA: Aerospace Medical Association
    • ASP: AIRCOM Service Processor
    • ASPA: Asociacian Sindical de Pilots Aviadores de Mexico
    • ASPENN RPG: Aeronautical Fixed Service Planning Study EUR/NAM/NAT Regional Planning Group
    • ASPH: Asphalt
    • ASPLAB: Asociacion Sindical de Pilotos del Lloyd Aereo (Bolivia)
    • ASPP: Aeronautical Fixed Service Systems Planning for Data Interchange Panel
    • ASTERIX: All Purpose Structured EUROCONTROL Radar Information Exchange
    • ASTOR: Aircraft Simulation for Traffic Operations Research
    • ATA: Air Transport Association of America
    • ATAFG: African Air Traffic Analysis and Forecasting Group
    • ATAG: Air Transport Action Group
    • ATC: Air Traffic Control
    • ATCA: Air Traffic Controllers Association (USA)
    • ATFM: Air Traffic Flow Management
    • ATIS: Aerodrome Terminal Information Service
    • ATIS-B: Automatic Terminal Information Service – Broadcast
    • ATK: Air Traffic Controller Acknowledgement (service)
    • ATLA: Air Transport Licensing Authority
    • ATM: Air Transport Management
    • ATMCP: Air Traffic Management Operational Concept Panel
    • ATMG: Airspace and Traffic Management Group
    • ATMRPP: ATM Requirements and Performance Panel
    • ATN: Aeronautical Telecommunications Network
    • ATNP: Aeronautical Telecommunications Network Panel
    • ATPL: Air Transport Pilot Licence
    • ATS: Air Traffic Services
    • ATSB: Air Transportation Stabilisation Board Australian Transport Safety Bureau
    • ATSU: Air Traffic Services Unit
    • ATTCS: Automatic Takeoff Thrust Control Systems
    • ATV: Associazione Tecnici di Volo Aviazione Civile (Italy Flight Engineers)
    • ATZ: Aerodrome Traffic Zone
    • AUS-ALPA: Australian Air Line Pilots Association
    • AUSEP: Australian RNAV Separation Standards
    • A-VDGS: Advanced-Visual Docking Guidance System
    • AVLC: Aviation VHR Link Control
    • AVMED: Aviation Medicine
    • AVPAC: Aviation VHF (Very High Frequency) Packet Communication
    • AVSEC: Aviation Security
    • AWO JAA: All Weather Operations
    • AWOP: All Weather Operations Panel
    • AWOS: Automated Weather Observation System
    • AWPA: Australian Women Pilots’ Association
    • AWY: Airway
    • BA: Braking Action
    • Bahamas ALPA: Bahamas Airline Pilots’ Association
    • BALPA: British Air Line Pilots’ Association
    • BAPA: Bangladesh Airline Pilots’ Association
    • BCC: Battery Charge Controller
    • BeCA: Belgium Cockpit Association
    • BORG: Basic Operational Requirements Group
    • BSP: Aircraft Parameter Downlink (service)
    • BUL-ALPA: Bulgarian Air Line Pilots’ Association
    • CAA NZ: Civil Aviation Authority of New Zealand
    • CAA PNG: Civil Aviation Authority of Papua New Guinea
    • CAA SI: Civil Aviation Authority of Solomon Islands
    • CAA: Civil Aviation Authority
    • CAAC: Civil Aviation Administration of China
    • CAAF: Civil Aviation Authority of Fiji
    • CAAS: Certification of Aeroplane Automatic Systems
    • CAASA: Commercial Aviation Association of Southern Africa
    • <li>CACRC: Commercial Aircraft Composite Repair Committee
    • CAEE: Committee of Aircraft Engine Emissions
    • CAeM: Commission for Aeronautical Meteorology
    • CAEP: Committee on Aviation Environmental Protection (ICAO)
    • CALPA: China Airline Pilots’ Association
    • CAMA: Civil Aviation Medical Association
    • CAN: Committee on Aircraft Noise
    • CANDI: Civil Aviation Network Data Interchange
    • CANSO: Civil Air Navigation Services Organisation
    • CAP: Study Group on Continuing Airworthiness Problems
    • CAPA: Cayman Airline Pilots’ Association
    • CAPS: Computer Automated Profiling Systems
    • CARATS: Collaborative Actions for Renovation of Air Traffic Systems
    • CAS: Calibrated Air Speed
    • CASA: Civil Aviation Safety Authority (Australia)
    • CASA: Computer Assisted Slot Allocation
    • CASS: Corporate Aviation Safety Seminar
    • C-ATSU: Current Air Traffic Services Unit
    • CAVOK: Ceiling and Visibility OK / Clouds and Visibility OK
    • CAVU: Ceiling and Visibility Unlimited
    • CAWU: Civil Aviations Workers Union
    • CBOC: Composite Binary Offset Carrier
    • CCAA: Chinese Civil Aviation Association
    • CCO: Continuous Climb Operations
    • CCQ: Cross Cockpit Qualification
    • CCS: Cabin Communications System
    • CD: Candela
    • CDA: Continuous Descent Approach
    • CDFA: Constant Descent Final Approach
    • CDN: Coordination (message designator)
    • CDO: Continuous Descent Operations
    • CDR: Conditional Route
    • CDS: Cabin Distribution System
    • CDTI: Cockpit Display of Traffic Information
    • CEAC: Committee of European Airspace Co-ordination
    • CEFA: Committee for Environmentally Friendly Aviation (ERA)
    • CEI: Cabin Equipment Interfaces
    • CET: Central European Time
    • CFDIU: Central Fault Display Interface Unit
    • CFDS: Centralised Fault Display System
    • CFIT: Controlled Flight Into Terrain
    • CFMU: Central Flow Management Unit
    • CG: Centre of Gravity
    • CGL: Circling Guidance Lights
    • CHG: Modification (message designator)
    • CIDIN: Common ICAO Data Interchange Network
    • CIE: International Commission on Illumination
    • CIMO: Committee for Instruments and Methods of Observation
    • CIP: Convergence and Implementation Programme
    • CIR: Cockpit Image Recorders
    • CIRM: International Radio Maritime Committee
    • CLOP: Criminal Liability of Pilots
    • CMIC: Civil/Military Interface Committee
    • CNS: Communication, Navigation and Surveillance
    • COCESNA: Central American Corporation for Air Navigation Services
    • CODA: Central Office of Delay Analysis
    • COSCAP: Cooperative Development of Operational Safety and Airworthiness Activities
    • CPAR: Cockpit Personnel Association of Russia
    • CPC: Circulo de Pilotos de Chile
    • CPDLC: Controller Pilot Data Link Communications
    • CPL: Commercial Pilot Licence
    • CPU: Core Processing Unit
    • CRAM: Conditional Route Availability Message
    • CRCO: Central Route Charges Office
    • CRM: Collision Risk Methodology
    • CRO-ALPA: Croatian Air Line Pilots’ Association
    • CRP: Co-ordinated Research Programme
    • CS: Certification Specification
    • CSI: Criticality Safety Index
    • CSM: Consultant Services Meeting
    • CTAM: Climb to and maintain
    • CTO: Calculated Time Over
    • CTOL: Conventional Take-Off & Landing
    • CTU: Cabin Telecommunications Unit
    • CUI: Committee on Unlawful Interference
    • CVR: Cockpit Voice Recorder
    • CW: Carrier Wave
    • CWP: Controller Working Position
    • CZ-ALPA: Czech Air Line Pilots’ Association
    • DALPA: Danish Air Line Pilots’ Association
    • DANT: Danish NEAN Project Team
    • DAP: Download of Aircraft Parameter
    • DARP(S): Dynamic Airborne Route Planning (System)
    • DATAC: Digital Autonomous Terminal Access Communication
    • D-ATSU: A Downstream Air Traffic Services Unit
    • DCAA: Danish Civil Aviation Administration (SLV)
    • DCD: Double Channel Duplex
    • DCPC: Direct Controller-Pilot Communications
    • DCS: Double Channel Simplex
    • DED: Directorate of European Air Traffic Control Harmonisation and Integration Programme Development
    • DEFAMM: Demonstration Facilities for Airport Movement Management
    • DES: Descend to/descending
    • DEV: Direction des Essais en Vol
    • DFTI: Distance From Touchdown Indicator
    • DG: IFALPA Dangerous Goods Committee
    • DGAC: Direction Générale de l’Aviation Civile (France)
    • DGB: Dangerous Goods Board
    • DGCA: Director-Generals of Civil Aviation
    • DGELG: Dangerous Goods European Advisory Group
    • DGP: DLEC Dangerous Goods Panel – Department for Liaison with the European Community
    • D-GPS: Differential Global Positioning System
    • DGPS: Differential GPS
    • DGRs: Dangerous Goods Regulations
    • DGVII: Directorate General VII
    • DH: Decision Height
    • DITS: Digital Information Transfer System
    • DL: Downlink Message
    • DLAP: Down Linked Aircraft Parameters
    • DLASD: Data Link Application and System Document
    • DLH: Deutsche Lufthansa
    • DLR: German Aerospace Center
    • DLSG: Data Link Sub Group (Eurocontrol)
    • DME: Distance Measuring Equipment
    • DMI: Distance Measurement Instrument
    • DOA: Design Organisation Approval
    • DOP: Dilution Of Precision
    • DOTS: Dynamic Ocean Tracking System
    • DP: Dew Point Temperature
    • DR: Dead Reckoning Navigation
    • DSAC: Directions de la Sécurité de l’Aviation Civile
    • DSB: Double Side Band
    • DSCN: Direct Speech Circuit Networks
    • DSNA: Direction des Services de la Navigation Aérienne
    • DTG: Distance To Go
    • DTU: Data Terminating Unitv
    • DTW: Dual Tandem Wheels
    • DUT: Device Under Test
    • DW: Dual wheels
    • DZ: Drizzle
    • EAD: Emergency Airworthiness Directive
    • EAMG: European Air (Traffic Flow Management) Group
    • EANPG: European Air Navigation Planning Group
    • EAPTU: Air Line Pilots Trade Union (Estonia)
    • EARC: Elimination of Ambiguity in Radiotelephony Call Signs
    • EASA: European Aviation Safety Agency
    • EASP: European Aviation Safety Plan
    • EASS: European Aviation Safety Seminar
    • EATCHIP: European Air Traffic Control Harmonisation and Integration Programme
    • EATMS: European Air Traffic Management System
    • EBAA: European Business Aviation Association
    • EBU: Engine Build Unit
    • EC: Executive Controller (also known as ‘Radar Controller’)
    • EC: European Commission
    • ECA: European Cockpit Association
    • ECAC: European Civil Aviation Conference
    • ECAM: Electronic Centralised Aircraft Monitoring (airborne display)
    • ECAR: European Civil Aviation Requirement
    • ECASS: European Committee on Aircrew Scheduling and Safety
    • ECAST: European Commercial Aviation Safety Team
    • ECCAIRS: European Coordination Centre for Accident and Incident Reporting Systems
    • ECMT: European Conference of Ministers of Transport
    • EDD: Electronic Data Display
    • EEC: EUROCONTROL Experimental Centre
    • EFB: Electronic Flight Bag
    • EFC: Expect Further Clearance
    • EGALPA: Egyptian Air Line Pilots Association
    • EGAST: European General Aviation Safety Team
    • EGNOSS: European Geostationary Navigation System Overlay
    • EGPWS: Enhanced Ground Proximity Warning System
    • EHEST: European Helicopter Safety Team
    • EHF: Extremely High Frequency (30,000 to 300,000 Mhz)
    • EHSAT: European Helicopter Safety Analysis Team
    • EIM: Enosis Iptamenon Michanikon (Greece Flight Engineers)
    • ELBA: Emergency Locator Beacon Aircraft
    • ELS: Electronic Library Systems
    • ELT: Emergency Locator Transmitter
    • EMARSSH: Europe, Middle East, Asia Route Structure of the Himalayas
    • EMAS: Engineered Materials Arresting System
    • EMS: Emergency Medical Service
    • E-OCVM: European Operational Concept Validation Methodology
    • EPCU: Electrical Power Control Unit
    • ERA: European Regions Airlines Association
    • EROC: Study Group on En-Route Obstacle Clearance Criteria
    • ERP: Emergency Response Plan
    • ESA: European Space Agency
    • ESASI: European Society of Air Safety Investigators
    • ESSI: European Strategic Safety Initiative
    • ETA: Estimated Time of Arrival
    • ETD: Estimated Time of Departure
    • ETFMS: Enhanced Tactical Flow Management Systems (Eurocontrol)
    • ETO: Estimated Time Over
    • ETOPs: Extended Range Twin-Engine Operations
    • ETOT: Estimated Take Off-Time
    • ETSI: European Telecommunications Standards Institute
    • ETSO: European Technical Standard Orders
    • EU: European Union
    • EU-FCL: EASA Flight Crew Licensing
    • EU-OPS: EASA Operations Regulations
    • EUR /TFG: European Traffic Forecasting Group
    • EUR: Region European Region
    • EURO RAN: European Regional Air Navigation (Meeting)
    • EUROCAE: European Organisation for Civil Aviation Equipment
    • EUROCONTROL: European Organisation for the Safety of Air Navigation
    • EUROPILOTE: European Organisation or Airline Pilots Association
    • EVS: Enhanced Visual System
    • FAA: Federal Aviation Administration (USA)
    • FABEC: Functional Airspace Block Europe Central
    • FADEC: Full Authority Digital Engine Control
    • FAF: Final Approach Fix
    • FAL: Final Assembly Line
    • FALPA: Fiji Air Line Pilots Association
    • FANS: Future Air Navigation System
    • FAP: Final Approach Point
    • FAR: Federation Aviation Regulations (US FAA)
    • FARAWAY: Fusion of Radar and ADS data through two WAY data link
    • FAST: Future Aviation Safety Team
    • FCL: Flight Crew Licensing
    • FCM: Flight Confirmation Message
    • FCT: Friction Coefficient
    • FDA: Flight Data Analysis
    • FDF: Final Dissemination Forum
    • FDFM: Flight Data and Flow Management Group
    • FDM: Flight Data Message
    • FDMS: Flight Data Monitoring System
    • FDP: Flight Data Processing
    • FDPS: Flight Data Processing System
    • FDR: Flight Data Record
    • FEATS: Future European Air (Traffic Services) System Concept Group
    • FENA: Flight Engineers and Navigators Association
    • FHA: Functional Hazard Analysis
    • FIA: Icelandic Air Line Pilots Association
    • FIC: Finance Committee
    • FIM: Fault Isolation Manual
    • FIR: Flight Information Region
    • FISA: Flight Information Service (Automatic)
    • FIS-B: Flight Information Services Broadcast
    • FIXM: Flight Information eXchange Model
    • FKFE: Forum Komunikasi Flight Engineers (Indonesia)
    • FL: Flight Level
    • FLAS: Flight Level Allocation Scheme
    • FLIREC: Flight Recorders
    • FLOE/FLOEast: Informal Flow Control (Europe East)
    • FLOW/FLOWest: Informal Flow Control (Europe West)
    • FLT: Flight
    • FMC: Flight Management Computer
    • FMDB: Fault Message Database
    • FMG: Frequency Management Group
    • FMI: Frequency Management Issues
    • FMPG: Air Traffic Flow Management Planning Group
    • FMS: Flight Management System
    • FMU: Flow Management Unit
    • FNPT: Flight & Navigation Procedures Trainer
    • FO: Flight Object
    • FOC: Full-Operational Capability
    • FOD: Foreign Object Debris
    • FOG: Fiber Optical Gyroscope
    • FOQA: Flight Operations Quality Assurance
    • FP7: 7th Framework Programme
    • FPA: Finnish Pilots’ Association
    • FPDC: Fédération Professionnelle du Drone Civil
    • FPL: Filed Flight Plan
    • FREER: Free-Route Experimental Encounter Resolution
    • FRP: Fares and Rates Panel
    • FSF IAS: Flight Safety Foundation International Aviation Safety
    • FSF: Flight Safety Foundation
    • FSG: Flight Study Group
    • FTPC: Flight Technical Professional Committee
    • FUA: Flexible Use of Airspace
    • FZDZ: Freezing Drizzle
    • FZFG: Freezing Fog
    • FZL: Freezing Level
    • FZRA: Freezing Rain
    • G/A: Ground to Air
    • GA: Go-around
    • GALPA: Ghanaian Air Line Pilots’ Association
    • GANP: Global Air Navigation Plan
    • GAPAN: Guild of Air Pilots & Navigators
    • GASAG: Global Aviation Security Action Group
    • GAT: General Air Traffic
    • GBAS: Ground Based Augmentation System (ie GLS)
    • GCU: Generator Control Unit
    • GDATA: Guide DATA analyser (Software for positioning performance assessment)
    • Georgian ALPA: Georgian Air Line Pilots’ Association
    • GERT: German NEAN Project Team
    • GES: Ground Earth Station (satellite)
    • GIS: Geographic Information System
    • GIVD: Gravity Induced Vestibular Dysfunction
    • GLOC: Gravity Induced Loss of Consciousness
    • GLONASS: GLObal Navigation Satellite System (operated by the Russian Space Forces)
    • GLS: Global Landing System
    • GNLU: GNSS Navigation and Landing Unit
    • GNSS: Global Navigation Satellite System
    • GP: Glidepath
    • GPS: Global Positioning System (operated by the DoD)
    • GPWS: Ground Proximity Warning System
    • GRACYAS: Caribbean/ South American African Regional Planning Group
    • GSIF: Ground Station Identification Frames
    • GSUITE: Guide software suite (Suite of Software used for positioning analysis)
    • GSURV: Guide SURVey software (Software for managing data collection)
    • GTPAPC: Grupo Tecnico de Pilotos Aviadores Profesionales de Cuba
    • GUI: Graphical User Interface
    • GUIDE: GNSS Usage Innovation Development of Excellence
    • HALPA: Hellenic Air Line Pilots Association (Greece)
    • HAPI: Helicopter Approach Path Indicator
    • HARA: Helicopter Airborne Radar Approaches Study Group
    • HASA: Helicopter Association of Southern Africa
    • HAWOP: Helicopter All-Weather Operations Study Group
    • HBT: Human Behavioural Technology
    • HDF: High Frequency Direction-finding station
    • HEL: IFALPA Helicopter Committee
    • HELIOPS: Helicopter Operations Panel
    • HEMS: Helicopter Emergency Medical Services
    • HF: High Frequency
    • HIL: Horizontal Integrity Limit
    • HIRO: High Intensity Runway Operations
    • HIS: Horizontal Situation Indicator
    • HISTB2: High Integrity System Test Bed v2
    • HKALPA: Hong Kong Air Line Pilots Association
    • HKAOA: Hong Kong Aircrew Officers Association
    • HMD: Head Mounted Display
    • HMI: Human Machine Interface
    • HPE: Horizontal Position Error
    • HPL: horizontal protection Limit
    • HTAWS: Helicopter Terrain Awareness and Warning System
    • HUD: Head-Up Display
    • HUGs: Head-Up Guidance Systems
    • HUL: Horizontal Uncertainty Level
    • HUMS: Health & Usage Monitoring Systems
    • HUNALPA: Hungarian Air Line Pilots’ Association
    • HUPER: IFALPA Human Performance Committee
    • IAAC: International Agricultural Aviation Centre
    • IAARC: International Administrative Aeronautical Radio Conference
    • IAASM: International Academy of Aviation and Space Medicine
    • IABA: International Association of Aircraft Brokers and Agents
    • IAC: International Advisory Committee
    • IACA: International Air Carrier Association
    • IACSC: Improved Airworthiness Communications Steering Committee
    • IAEA: International Atomic Energy Agency
    • IAF: Initial Approach Fix
    • IALPA: Irish Air Line Pilots Association
    • IAM: Informal (South Pacific Air Traffic Services Co-ordinating Group) Application Manual
    • IANC: International Airline Navigators Council
    • IAOPA: International Aircraft Owners and Pilots Associations
    • IAP: Instrument Approach Plate
    • IAPA: International Airline Passengers Association
    • IAS: Indicated Air Speed
    • IASA: International Air Safety Association
    • IASS: International Air Safety Seminar
    • IATA: International Air Transport Association
    • IATA: International Air Transport Association
    • ICAO: International Civil Aviation Organisation
    • ICASM: International Congress of Aviation and Space Medicine
    • ICD: Interface Control Document
    • IF: Intermediate Fix
    • IFA: International Federation of Airworthiness
    • IFALPA: International Federation of Air Line Pilots’ Associations
    • IFATCA: International Federation of Air Traffic Controllers’ Associations
    • IFATSEA: International Federation of Air Traffic Safety Electronic Associations
    • IFE: In-flight Emergency
    • IFEA: Indian Flight Engineers Association
    • IFEO: International Flight Engineers Organisation
    • IFFAS: International Fund for Aviation Safety
    • IFHO: International Federation of Helicopter Operators
    • IFP: Integrated Flight Plan System
    • IFPP: Instrument Flight Procedures Panel (ICAO)
    • IFPS: Integrated Initial Flight Plan Processing System
    • IFPZ: Integrated Initial Flight Plan Processing System Zone
    • IFR: Instrument Flight Rules
    • IHST: International Helicopter Safety Team
    • ILO: International Labour Organisation
    • ILS: Instrument Landing System
    • IMA: Integrated Modular Avionics
    • IMC: Instrument Meteorological Conditions
    • IMU: Inertial Management Unit
    • IND: IFALPA Industrial Committee
    • INS: Inertial Navigation System
    • INSTRAT: Institutional Strategy for Air Traffic Management
    • INTERPOL: International Criminal Police Organisation
    • INU: Inertial Navigation Unit
    • IOCS: Interim Oceanic Control System (Interim datalink system for the Auckland Flight Information Region)
    • IOSA: IATA Operational Safety Audit
    • IP: Internet Protocol
    • IPACG: Informal Pacific ATS (Air Traffic Services) Co-ordinating Group
    • IPG: Indian Pilots’ Guild
    • IPV: Instrument Approach with Vertical guidance
    • IR: Ice on Runway
    • IRS: Inertial Reference System
    • ISAD: ICAO’s Incorporating Security into Aircraft Design () Working Group
    • ISASI: International Society of Air Safety Investigators
    • ISO: International Standards Organisation
    • ISPACG: Informal South Pacific ATS (Air Traffic Services) Co-ordinating Group
    • Israel FE: Israel Flight Engineers
    • ISR-ALPA: Israel Air Line Pilots Association
    • ITA: Institute of Air Transport
    • ITF: International Transport Workers Federation
    • ITP: In Trail Procedure (for climb or descent)
    • ITU: International Telecommunications Union
    • IUAI: International Union of Aviation Insurers
    • JAA: Joint Aviation Authorities
    • JALPA: Jamaica Air Line Pilots Association
    • JCCA: Joint Committee for Civil Aviation
    • JSSI: Joint Safety Strategy Initiative
    • JTSO: Joint Technical Standard Order
    • KAEPA: Kuwait Aircraft Engineers and Pilots Association
    • KAL: Korean Airlines
    • KALPA: Kenya Air Line Pilots Association
    • KCCU: Keyboard Cursor Control Unit
    • LAAS: Local Area Augmentation System
    • LACAC: Latin American Civil Aviation Commission
    • LAHSO: Land and Hold Short Operations
    • LAN: Local Area Network
    • LARS: Light-weight Aircraft Recording System
    • LDG: Landing
    • LDM: Low dispersible material
    • LIALPA: Leeward Islands Air Line Pilots Association
    • LIT-ALPA: Lithuanian Airline Pilots’ Association
    • LOA: Letter of Agreement
    • LOC: Localiser
    • LOI: Loss Of Integrity
    • LOSA: Line Orientated Safety Audit
    • LPA: Lebanese Pilots Association
    • LPV: Localiser Performance with Vertical Guidance
    • LRM: Line Replacement Modules
    • LRNS: Long Range Navigation System
    • LROPS: Long Range Operations
    • LRU: Line Replacement Unit
    • LSA: Low specific activity materials
    • MA: Mask Angle
    • MADAP: Maastricht Automatic Data Processing and Display System
    • MALPA: Mauritius Air Line Pilots’ Association
    • MAN: Metropolitan Area Network
    • MAP: Missed Approach Procedure
    • MAPA: Malaysian Airline Pilots’ Association
    • MAPE: Mean Absolute Percentage Errors (traffic forecasting)
    • MAPT: Missed Approach Point
    • MAPt: Missed Approach Point
    • MASPS: Minimum Aviation Systems Performance Standards
    • MAT: Maintenance Access Terminal
    • MATF: Missed Approach Turning Fix
    • MATSE: Meeting on the Air Traffic System in Europe
    • MAUW: Maximum All Up Weight
    • MBA: Microburst Alert
    • MBOC: Multiplexed Binary Offset Carrier
    • MCC: Multi Crew Coordination
    • MCDU: Multifunction Control Display Unit
    • MDA/H: Minimum Descent Altitude/Height
    • MEA: Minimum En-route Altitude
    • MECACON: Middle East Civil Aviation Conference
    • MEL: Minimum Equipment List
    • MET: Meteorological
    • METAG: MET Advisory Group
    • METAR: Meteorological Aerodrome Report
    • METODA: Meteorological Observations and Information Distribution Arrangements for Local Aeronautical Users
    • MFD: Multi Function Display
    • MIL: Military
    • MLS: Microwave Landing Systems
    • MLW: Maximum Landing Weight
    • MM: Middle Marker
    • MMEL: Master Minimum Equipment List
    • MMU: Memory Management Unit
    • MNOP: Maximum Normal Operating Pressure
    • MNPS: Minimum Navigation Performance Specifications
    • MNPSA: Minimum Navigation Performance Specification Airspace
    • MOA: Memorandum of Understanding
    • MOPS: Minimum Operation Performance Standards
    • MOTNE: Meteorological Operational Telecommunication Network in Europe
    • MPL: Multi-crew Pilot Licence
    • MRVA: Minimum Radar Vector Altitude
    • MSL: Mean Sea Level
    • MTBF: Mean Time Between Failure
    • MTOW: Maximum Take-Off Weight
    • MU: Management Unit
    • MUCDU: Multifunctional Control and Display Unit
    • N1: Gas generator speed
    • N2: Second stage turbine speed
    • NAAN: North Atlantic ADS-B Network
    • NAAPE: National Association of Aircraft Pilots and Engineers (Nigeria)
    • NAGU: Galileo Active User Notifications
    • NANUs: Notices to Navstar Users
    • NAPA: Namibia Air Line Pilots’ Association
    • NARG: Navigation Aids and Area Navigation Group
    • NAS: National Airspace System
    • NASA: National Aeronautics and Space Administration
    • NATO: North Atlantic Treaty Organisation
    • NATS: National Air Traffic Services (UK)
    • NATSPG or NAT/SPG: North Atlantic Systems Planning Group
    • NAV: Navigation
    • NAVSEP or NAV/S: Panel Experts on Navigation and Separation
    • ND: Navigation Display
    • NDA: Next Data Authority
    • NDB: Non Directional radio Beacon
    • NDB: Navigation DataBase
    • NEAN: North European ADS-B Network
    • NEAP: North European CNS/ATM Application Project
    • NEG: Negative, No, No permission, that is not correct
    • NextGen: Next Generation Air Transportation System
    • NF: Norwegian Air Line Pilots Association
    • NFPA: National Fire Protection Association
    • NLA: New Large Aircraft
    • NLR: National Aerospace Laboratory of the Netherlands
    • NM: Nautical Miles
    • NMB: National Mediation Board
    • NMEA: National Marine Electronics Association
    • NNAE: Bureau de Normalisation de l’Aéronautique et de l’Espace
    • NOSIG: No Significant change
    • NOTAM: Notice to AirMen
    • NP: Propeller speed
    • NPA: Notice of Proposed Amendments
    • NPA(s): Non-Precision Approaches
    • NPRM: Notice of Proposed Rulemaking (US FAA)
    • NPS: Navigation Performance Scales
    • NSSG: Navigation & Separation Sub-Group
    • NTSB: National Transportation Safety Board
    • NUP: NEAN Update Programme
    • NVG: Night Vision Goggles
    • NVIS: Night-Vision Imaging System
    • NZ-ALPA: New Zealand Air Line Pilots Association
    • OAT: Outside Air Temperature
    • OBS: Omni Bearing Selector
    • OBST: Obstacle
    • OCC: Operations Control Center
    • OCS: Oceanic Control System
    • OCU OMT: (Onboard Maintenance Terminal) Controller Unit
    • ODETE: On-Line Data Exchange Terminal
    • ODIAC-TF: Operational Development of Initial A/g data Communications Task Force
    • ODID: Operational Input and Display System
    • ODL: Oceanic Data Link (Datalink system for the Oakland Flight Information Region)
    • ODT OMT: (Onboard Maintenance Terminal) Display Unit
    • OFZ: Obstacle Free Zone
    • OGP: Oil and Gas Producers Aviation Sub Committee
    • OIP: Organization Iberoamericana de Pilotos
    • OLDI: On-Line Data Interchange
    • OM: Outer Marker
    • OMT: Onboard Maintenance Terminal
    • OP: Operational (issues)
    • OPAC: Operations of Aircraft
    • OPR: Air Traffic Management Operational Requirements
    • OPS: Operations
    • OPS/AIR: Operations/Airworthiness
    • OPSP: Operational Panel
    • OpSpec: Operations Specification
    • ORCAM: Originating Region Code Assignment Method
    • OSI: Open Systems Interconnection
    • OUR: Operational Users Requirements
    • PAAST: Pan American Aviation Safety Team
    • PACOTS: Pacific Organised Track System
    • PAK: Pilot Acknowledgement (service)
    • PALPA: Pakistan Air Line Pilots Association
    • PALPU: Pancyprian Airline Pilots Union
    • PAMC: Provisional Acceptable Means of Compliance
    • PANS: Procedures for Air Navigational Services
    • PANS-OPS: Procedures for Air Navigational Services – Aircraft Operations
    • PAPI: Precision Approach Path Indicator
    • PAR: Precision Approach Radar
    • PASYI: Pan-Cyprian Airline Pilots’ Union (PASYPI)
    • PATRAM: Packaging and Transport of Radio-Active Materials
    • PBS: Preferential Bidding System
    • PCA: Propulsion Controlled Aircraft
    • PCATD: Personal Computer based Aviation Training Device
    • PCM: Post Crash Management
    • PDOP: Position Dilution of Precision
    • PEC: Pan European Conference
    • PED: Passenger Electronic Devices
    • PEL/TRG: Personnel Licensing and Training
    • PETAL: Preliminary EUROCONTROL Test of Air/Ground Data Link
    • PF: Pilot Flying
    • PFA: Pilot Friendly Airport
    • PFCS: Primary Flight Computer System
    • PFD: Planned Flight Data
    • PIC: Pilot In Command
    • PID: Pilot Information Downlink (service)
    • PinS: Point-in-Space Approach
    • PIRG: Planning and Implementation Regional Group
    • PIs: Performance Indicators
    • PLC: Planning Controller (also known as Co-ordinator)
    • PMC: Project Management Cell (Eurocontrol)
    • PMS: Pavement Management System
    • PNF: Pilot Not Flying
    • PNGAPA: Papua New Guinea Air Pilots’ Association
    • POH: Pilot Operating Handbook
    • POL STAT: IFALPA Policy Statement
    • POLALPA: Stowarzyszenie Polskich Pilotow Komunikacyjnych (Poland)
    • PPK: Post Processing Kinematic
    • PRC: Performance Review Commission
    • PRICE: ICAO Proficiency Requirements in Common English Study Group
    • PRL: Pilot Request Level (service)
    • PRN: Pseudo Random Noise
    • PRNAV: Precision Area Navigation
    • PROMET: Provision of Meteorological Information
    • PRQ: Pilot Request (service)
    • PRR: Pilot Request, Route (service)
    • PRU: Performance Review Unit
    • PSC: Project Steering Committee
    • PTOT: Provisional Take-Off Time
    • PTT: Press To Talk
    • PTUK: Pilots’ Trade Union Kazakhstan
    • PTUL: Pilots Trade Union of Latvia
    • PV: Present Value
    • PVT: Position Velocity Time
    • Q PROCEDURE: Procedure to identify replacement flight plans
    • QDM: Magnetic zero wind heading
    • QDR: Magnetic bearing
    • QFA: Qantas
    • QFE: Altimeter setting to give height above aerodrome
    • QNH: Altimeter setting to give height above sea level
    • QOS: Quality of Service
    • RA:Resolution Advisory
    • RAA: Regional Airline Association (USA)
    • RAAS: Runway Aural Awareness System
    • RAC: Rules of the Air and Air Traffic Services
    • RAeS: Royal Aeronautical Society
    • RAIM: Receiver Autonomous Integrity Monitoring
    • RAIM: Receiver Autonomous Integrity Monitoring
    • RAN: Regional Air Navigation
    • RAPNET: Regional ATC Packet switched Network
    • RASP: Radar Application Specialist Panel
    • R-ATSU: The Receiving Air Traffic Services Unit
    • RCL: Runway Centreline Lighting
    • RDPS: Radar Data Processing System
    • REG: Regulatory (issues)
    • REL: Runway Entrance Light(s)
    • RESA: Runway End Safety Area
    • RESMA: Requirements for Emergency and Safety Airborne Equipment
    • RET: Airborne & Ground Retrofit (issues)
    • RF: Radio Frequency
    • RFC: Request For Change
    • RFF: Rescue and Fire Fighting
    • RFL: Requested Flight Level
    • RGCSP: Review of General Concept of Separation Panel
    • RGS: Remote Ground Station
    • RIMS: Runway Incursion Monitoring System
    • RINEX: Receiver Independent Exchange Format
    • RMCDE: Radar Message Conversion and Distribution Equipment
    • RMP: Radio Management Panel
    • RNAV: Area Navigation Receiver Independent Exchange Format
    • RNDSG: Route Network and Development Sub-Group
    • RNMP: Replacement of the Nautical Mile Panel
    • RNP: Required Navigation Performance
    • RO-ALPU: Romanian Air Line Pilot’s Union
    • RPAS: Remotely Piloted Aircraft Systems
    • RPF: Rapid Prototyping Facility
    • RPG: Regional Planning Group
    • RPL: Repetitive Flight Plan
    • RPP: Radiation Protection Programme
    • RPR: Re-Routing Proposal Message
    • RSC: Runway Service Conditions
    • RT/RTF: Radio Telephony
    • RTA: Required Time of Arrival
    • RTCA: Requirements and Technical Concepts for Aeronautics
    • RTCM SC: Radio Technical Commission for Maritime Services Special Committee
    • RTD: Research and Technical Development
    • RTF: Radiotelephony
    • RTK: Real Time Kinematic
    • RTO: Rejected Take Off
    • RVR: Runway Visual Range
    • RVR: Runway Visual Range
    • RVSM: Reduced Vertical Separation Minima
    • RWSL: Runway Status Lights
    • RWY: Runway
    • RX: Receiver
    • SA: Selective Availability
    • SAAFEA: South African Airways Flight Engineers Association
    • SAAM: System for Assignment and Analysis at a Macroscopic level
    • SACAA: Southern African Civil Aviation Authority
    • SAE: Society of Automotive Engineers
    • SAFO: Safety Alert for Operators
    • SAGSTRAM: Standing Advisory Group on the Safe Transport of Radioactive Material
    • SALPA: Sudan Air Line Pilots Association
    • SAPA: Swazi Air Line Pilots Association
    • SAR: Search And Rescue
    • SARPs: Standards and Recommended Practices (ICAO)
    • SAS: Scandinavian Airline Systems
    • SASP: ICAO Separation and Airspace Safety Panel
    • SATCOM: Satellite Communication
    • SATSAR: Satellite-aided Search And Rescue
    • SBAS: Space Based Augmentation System (ie WAAS)
    • SC: Steering Committee
    • SCA: Serbian Cockpit Association
    • SCAA: Swedish Civil Aviation Administration (LFV)
    • SCAT-1: Special Category One
    • SCP: Spacecraft Control Processors
    • SDR: Service Difficulty Report
    • SDS: Sub Domain Server
    • SEAC: Service d’Etat de l’Aviation Civile (French Polynesia)
    • SEC: IFALPA Security Committee
    • SEIFR: Single-Engine Instrument Flight Rules
    • SEOTV: Sindicato Espanol de Oficiales Tecnicos de Vuelo (Spain Flight Engineers)
    • SEP: Safety Equipment and Procedures
    • SEPLA: Sindicato Espanol de Pilotos de Lineas Aereas (Spain)
    • SES: Single European Sky
    • SESAR: Single European Sky ATM Research
    • SESMA: Special Event Trend Analysis
    • SETP: Society of Experimental Test Pilots
    • SF: Special Freighter
    • SGCAS: Study Group on Certification of Automatic Systems
    • SGTOAA: Study Group on Take-off Accountability Areas
    • SICASP: SSR Improvements and Collision Avoidance Systems Panel
    • SID: Standard Instrument Departure
    • SIPAC: Sindicato Panameno de Aviadores Comerciales (Panama)
    • SIPACIP: Sindicato de Pilotos Aviadores Civiles del Paraguay
    • SISG: Safety Indicators Study Group (ICAO)
    • SITA: Société Internationale de Télécommunications Aéronautiques
    • SITNA: Service Technique de la Navigation Aérienne (French technical service)
    • SLOP: Strategic Lateral Offset Procedure
    • SMGCS: Surface Movement Guidance and Control Systems
    • SMI: Special Message Identifier
    • SMR: Surface Movement Radar Study Group
    • SMS: Safety Management System
    • SNA: Sindicato Nacional dos Aeronautas (Brazil)
    • SNOWTAM: Special NOTAM notifying the presence or removal of snow, ice, and slush or associated melt water from the manoeuvring areas of and aerodrome
    • SNPL: Syndicat National des Pilotes de Ligne (France)
    • SOIR: Simultaneous Operations on Parallel or Near-Parallel Instrument Runways
    • SOP: Standard Operating Procedures
    • SPA: Suriname Pilots’ Association
    • SPACDAR: Specialist Panel on Automatic Conflict Detection and Resolution
    • SPAS: Safety Performance Analysis System
    • SPF: Svensk Pilot Forening (Sweden)
    • SPLA: Syndicat des Pilotes de Ligna Algeriens (Algeria)
    • SPNT: Syndicat Personnel Navigant Technique de Tunisia
    • SR&O: System Requirements and Objectives
    • SRA: Surveillance Radar Approach
    • SRC: Safety Regulation Commission
    • SRG: Safety Regulation Group
    • SSA: System Safety Approach
    • SSM: Satellite Signal Monitoring
    • SSR: Secondary Surveillance Radar
    • SSR: Mode S WG Secondary Surveillance Radar Mode Selective WG
    • STA: Scheduled Time of Arrival
    • STAP: (International Civil Aviation Organisation) Statistics Panel
    • STAR(s): Standard Terminal Arrival Routes / STandard ARrival
    • STC: Supplement Type Certificate
    • STCA: Short Term Conflict Alert
    • STDMA: Self-organising Time Division Multiple Access
    • STVAC: Sindicato dos Tecnicos de Voo da Aviacao Civil (Portugal Flight Engineers)
    • SVS: Synthetic Vision Systems
    • SWET: Swedish NEAN Project Team
    • SWIM: System Wide information Management
    • TA: Traffic Advisory
    • TAA: Terminal Approach Altitudes
    • TAAATS: The Australian Advanced Air Traffic Services System
    • TAF: Terminal Aerodrome Forecast
    • TALPA: Turk Hava Yallair Pilotlari Dernegi (Turkey)
    • TARA: Terminal Area R-NAV Applications Sub-Group
    • TARMAC: Taxi and Ramp Management and Control
    • TARTAR: International Civil Aviation Organisation Meetings on Transit Air Traffic Services Routes through the Airspace of the Russian Federation
    • TAWS: Terrain Avoidance Warning System
    • TCAA: Transatlantic Common Aviation Area
    • TCAS: Traffic Alert and Collision Avoidance System
    • TCP: Transmission Control Protocol
    • TDI: Track Deviation Instrument
    • TDM: Track Definition Message
    • TDZ: Touchdown Zone
    • TEMPO: Temporary or temporarily
    • TEN-T: Trans- European Network – Transport
    • TFG: Traffic Forecasting Group
    • TFTS: Terrestrial Flight Telephone System
    • TGS: Taxi Guidance System
    • ThaiPA: Thai Pilots’ Association
    • TIS-B: Traffic Information service – Broadcast
    • TMA: Terminal Area
    • TMBOC: Time-multiplexed Binary Offset Carrier
    • TMC: Traffic Management Coordinator
    • TMU: Traffic Management Unit
    • TOPM: Take-Off Performance Monitors
    • TOR: Terms Of Reference
    • TOS: Traffic Orientation Scheme
    • TPA: Tanzania Pilots Association
    • TRANSSAC: Transport Safety Standards Advisory Committee
    • TRL: Transition Level
    • TRNSG: Testing of Radio Navaids Study Group (ICAO)
    • TROP: Tropopause
    • TSA: Temporary Segregated Area
    • TSD: Time Sequence Diagram
    • TSO: Technical Standards Order
    • TTALPA: Trinidad & Tobago Airline Pilots Association
    • TUI: Trade Unions International of Transport Workers
    • T-VASIS: T Visual Approach Slope Indicator System
    • TWR: Air Traffic Control Tower
    • TWS: Terrain Awareness and Warning System
    • UAC: Upper Area Control Centre
    • UAL: United Airlines
    • UAT: Universal Access Transceiver
    • UAV: Unmanned Aerial Vehicles
    • UHF: Ultra High Frequency
    • UIR: Upper Information Region
    • UK: AIP United Kingdom Aeronautical Information Package (CAP 32)
    • UL: Uplink message
    • ULR: Ultra Long Range
    • UN: United Nations
    • UNCOE: United Nations Committee of Experts
    • UPA: Uganda Pilots’ Association
    • UPU: Universal Postal Union
    • USOAP: Universal Safety Oversight Audit Program (ICAO)
    • UTC: Universal Time Coordinated (equivalent to GMT & Zulu )
    • VAAC: Volcanic Ash Advisory Centre
    • VAC: Visual Approach Chart
    • VAP: Visual Aids Panel (ICAO)
    • VAR: Magnetic Variation
    • VASI: Visual Approach Slope Indicator
    • VASIS: Visual Approach Slope Indicating System
    • VAW: Volcanic Ash Warnings
    • VC: Vereinigung Cockpit (German Air Line Pilots’ Association)
    • VCS: Voice Communications System
    • VDL VHF: (Very High Frequency) Data Link
    • VDP: Visual Descent Point
    • VDR VHF: (Very High Frequency) Digital Radio
    • VFOP: Visual Flight Rules Operations Panel
    • VFR: Visual Flight Rules
    • VFRG: Visual Flight Rules Group
    • VHF: Very High Frequency
    • VIVO: Visualisation des Vols Océaniques (situation display & datalink system for the Tahiti Flight Information Region)
    • VKB KLM: Flight Engineers Association
    • VLDM: Very low dispersible material
    • VMC: Visual Meteorological Conditions
    • VMP: Vertical Measurement Panel
    • VNAV: Vertical Navigation
    • VNV: Vereniging van Nederlandse Verkeersvliegers (Dutch Air Line Pilots’ Association)
    • VOR: VHF Omni-Directional Range
    • VSCF: Variable Speed Constant Frequency
    • VSSG: Vertical Separation Study Group
    • VTOL: Vertical Take-Off & Landing
    • WAAS: Wide Area Augmentation System
    • WAFS: World Area Forecast System Study Group
    • WAN: Wide Area Network
    • WEAA: Western European Airports Association
    • WEAAP: Western European Association for Aviation Psychology
    • WFTU: World Federation of Trade Unions
    • WG: Working Group
    • WGS: 84 World Geodetic System 1984
    • WHO: World Health Organisation
    • WIAS: Weather Information Automated System
    • WIST: Study Group on Low Level Wind Shear Turbulence (ICAO)
    • WMO: World Meteorological Organisation
    • WOCL: Window of Circadian Low
    • WP: Work Package
    • WXXM: Weather eXchange Model
    • XPDR: Transponder
    • XTE: Cross Track Error
    • YOYO: Only Y Available
    • Zulu or z: Equivalent to Greenwich Mean Time or UTC