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Governmental & Military >> Aviation Abbreviations

Look through 4999 acronyms and abbreviations related to Aviation:

• DEP PROC — Departure Procedure
• AVSEC — Aviation Security
• XMIT — Transmit
• LTHH — Liner Terms Hook/Hook (shipping)
• FLSA — Fair Labor Standards Act
• IQ — Intelligence Quotient
• ETA — Estimated Time of Arrival
• LAN — Local Area Network
• NBFR — Not Before
• FTP — File Transfer Protocol
• MLS — Microwave Landing System
• ABT — About
• IFPRU — IFPS Responsible Unit
• DDU — Delivery Duty Unpaid
• AHRS — Attitude Heading Reference System
• DODAR — Diagnosis, Options, Decision, Assessment and Revision
• ADVON — Advanced Echelon
• DCE — Data Circuit-terminating Equipment
• CUG — Closed User Group
• MAN — Metropolitan Area Network
• BVR — Beyond Visual Range
• XCVR — Transceiver
• DLOSP — Dropping Last Outwards Sea Pilot
• ANOVA — Analysis of Variance (statistics)
• WWW — World Wide Web
• ROM — Read-Only Memory
• FD — Flight Director
• EGATS — Eurocontrol Guild of Air Traffic Services
• ARINC 604 — Guidance For Design And Use Of built-In Test Equipment
• A — Ampere
• ICD — Interface Control Document
• SAR — Search And Rescue
• IT — Information Technology
• GTEE — Guarantee
• ESA — European Space Agency
• QC — Quality Control
• FAR — Federal Aviation Regulation
• LOV — List Of Values
• ADC — Air Data Computer
• WAC — World Aeronautical Chart
• MSG — Message
• CAP — Civil Air Patrol
• AAL — Above Aerodrome Level
• EDI — Electronic Data Interchange
• LASER — Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
• RVR — Runway Visual Range
• S — South
• CV — Curriculum Vitae
• CRM — Crew Resource Management
• APU — Auxiliary Power Unit

• ANSI — American National Standards Institute, Inc.
• B-RNAV — Basic Area Navigation
• ASM — Available Seat Mile
• MOA — Memorandum Of Agreement
• EEO — Equal Employment Opportunity
• IRR — Internal Rate of Return
• TTG — Time-To-Go
• FYI — For Your Information
• NOTAMR — Notam Replacing another Notam
• AOG — Aircraft On Ground
• 2H — Second Half
• SMEQ — Subjective Mental Effort Questionnaire
• EMP — Electromagnetic Pulse
• JP — Japan
• LNG — Liquefied Natural Gas
• SAN — Storage Area Network
• CPU — Central Processing Unit
• DOT — Department of Transport
• PDA — Personal Digital Assistant
• PPE — Personal Protective Equipment
• DME — Distance Measuring Equipment
• GSE — Ground Support Equipment
• IRL — Republic Of Ireland
• CU — Control Unit
• ACD — Automatic Call Distributor
• WAN — Wide Area Network
• ACMS — Aircraft Condition Monitoring System
• USAF — United States Air Force
• AGL — Above Ground Level
• AFCS — Automatic Flight Control System
• FP — Flight Plan
• ASR — Airport Surveillance Radar
• SMTP — Simple Mail Transfer Protocol
• OEM — Original Equipment Manufacturer (usually in reference to car parts)
• ICAO — International Civil Aviation Organization
• E — East
• EASA — European Aviation Safety Agency
• ATA — Area Transportation Authority
• DEC — December
• IP — Internet Protocol
• A-VDGS — Advanced-Visual Docking Guidance System
• FLT — Full Liner Terms
• EET — Estimated Elapsed Time
• VAT — Value Added Tax
• GIS — Geographic Information System
• R&D — Research & Development
• CEP — Circular Error Probable
• ERP — Emergency Response Plan
• RF — Radio Frequency
• CVR — Cockpit Voice Recorder

• LRU — Line Replaceable Unit
• T-VASIS T — Visual Approach Slope Indicator System
• FAA — Federal Aviation Administration
• TCP — Transmission Control Protocol
• KE — Kenya
• MOU — Memorandum of Understanding (an MOU between Food & Drug Administratin and a regulatory agency in another country allows mutual recognition of inspections)
• EXW — Ex Works
• AF — Air Force
• CN — Change Notice
• IM — Information Management
• MAA — Maximum Authorized Altitude
• PMP — Project Management Plan
• RNP5 — Required Navigation Performance 5
• RAIL — Runway Alignment Indicator Lights
• Q&A — Question & Answer
• NACA — National Advisory Committee for Aeronautics
• ERP — Effective Radiated Power
• CPT — Carriage Paid To
• I AND Q CHANNELS — In-phase and Quadrature channels
• CIO — Chief Information Officer
• HMI — Human Machine Interface
• CDU — Control Display Unit
• TV — Television
• MIL — Military
• I/O — Input/Output
• COBT — Calculated Off Block Time
• MSA — Minimum Safe Altitude
• EAS — Equivalent Airspeed
• AIP — Aeronautical Information Publication
• A SMGCS — Advanced Surface Movement Guidance and Control Systems
• NATO — North Atlantic Treaty Organisation
• SID — Standard Instrument Departure
• R B — Range and Bearing line
• ALT — Alternate
• VAN — Value Added Network
• CHOPT — Charterers Option
• CGL — Circling Guidance Light
• PAR — Precision Approach Radar
• ADP — Automated Data Processing
• CFE — Customer-Furnished Equipment
• KG — Kilogram
• R — Right
• GS — Ground Speed
• RESA — Runway End Safety Area
• DH — Decision Height
• HMI — Hazardously Misleading Information
• RCU — Remote Control Unit
• FL — Flight Level
• QTY — Quantity
• RNP — Required Navigation Performance

• CTR — Center
• IDP — Individual Development Plan
• EGA — Enhanced Graphics Adapter
• ARPA — Advanced Research Projects Agency (made early internet)
• AGW — All Going Well
• QOS — Quality of Service
• A-VASIS — Advanced Visual Approach Slope Indicator System
• BW — Bandwidth
• CM — Configuration Management
• LVL — Level
• A/D CONVERTER — Analogue-to Digital Converter
• GA — General Aviation
• Q.23 — Signalling system for PABX
• ATD — Actual Time of Departure
• X-WIND — Cross Wind
• WX — Weather
• Q PROCEDURE — Procedure to identify replacement flight plans
• DOP — Dropping Outward Pilot
• N — North
• QMS — Quality Management System
• ND — Navigation Display
• ETS — Estimated Time of Sailing
• FAR — Federal Acquisition Regulation
• W — White
• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• DEC — Digital Equipment Corporation
• D-GPS — Differential Global Positioning System
• CM — Centimeter
• TTL — Transistor-Transistor Logic
• NI — Network Interface
• GALPA — Ghanaian Air Line Pilots Association
• ATLA — Air Transport Licensing Authority
• CLD — Cloud
• ADV — Advise
• MLW — Maximum Landing Weight
• AIXM — Aeronautical Information Exchange Model
• NOV — November
• AT — Air Traffic
• PFD — Primary Flight Display
• NAS — National Airspace System
• A/A — Air-to-Air
• TM — Traffic Management
• RFQ — Request For Quote
• FLT — Flight
• LSD — Lashed Secured Dunnaged
• PF — Pilot Flying
• SV — Space Vehicle
• V — Velocity
• MCE — Management Centre Europe
• RM — Risk Management

• IR — Iran Air
• ALP — Airport Layout Plan
• IFB — Invitation For Bid
• ADC — Air Defense Command
• PDF — Portable Document Format (created by Adobe Acrobat)
• CDL — Configuration Deviation List
• COD — Cash On Delivery
• FF — Fuel Flow
• CTRL — Control
• MDA — Minimum Descent Altitude
• GS — Glide Slope
• CKD — Completely Knocked Down
• DK — Deck
• FMC — Flight Management Computer
• FT — Feet
• SOP — Standard Operational Procedure
• JAN — January
• CW — Clockwise
• WP — Work Package
• B/L — Bill of Lading
• FIS — Flight Information Service
• IWL — Institute Warranty Limits
• FOB — Free On Board
• CNEE — Consignee
• CCU — Central Control Unit
• ASD — Aircraft Situation Display
• CAF — Currency Adjustment Factor
• ACN — Aircraft Classification Number
• C102 (TSO) — Helicopter Radar Approach, Issued 04/02/84
• GCU — Generator Control Unit
• DDP — Delivered Duty Paid
• CIP — Carriage and Insurance Paid to
• AE — Application Entity
• ATC — Air traffic control
• KAEPA — Kuwait Aircraft Engineers and Pilots Association
• AOCS — Attitude and Orbit Control System
• HDLC — High-Level Data Link Control
• W — West
• ALT — Altitude
• CAT — Clear Air Turbulence
• S-SUP — Sector Supervisor
• DE — Germany
• LEO — Low Earth Orbit (satellite communications)
• B — Blue
• TCA — Terminal Control Area
• CW — Carrier Wave
• BA FAIR — Braking action Fair
• MSL — Mean Sea Level
• N/A — Not Applicable
• AC — Air Canada

• GPS — Global Positioning System (ex-NAVSTAR)
• LOB — Line Of Business
• PCB — printed circuit board
• PAQ — Position Analysis Questionnaire
• PM — Preventive Maintenance
• VHF — Very High Frequency
• ADF — Automatic Direction Finder
• PMS — Performance Management System
• IAEA — International Atomic Energy Agency
• TBA — To Be Advised
• XBAR — Crossbar
• CAVOK — Ceiling And Visibility OK (Kav-okay)
• BA NIL — Braking Action Nil
• EW — Eurowings
• NOTAM — Notice to Airmen
• DA — Decision Altitude
• LF — Low Frequency
• X-BAND — The frequency range between 8000 and 12500 MHz
• DHDWTSBE — Despatch Half Demurrage on Working Time Saved Both Ends
• NM — Nautical Mile
• DEA — Drug Enforcement Agency
• XECM — Cancel Executive Controller Message
• CRS — Course
• LF — Load Factor
• LAT — Latitude
• SUA — Special-Use Airspace
• MCW — Modulated Continuous Wave
• ATCRBS — Air Traffic Control Radar Beacon System
• ARINC 422 — Guidance For Modification Status Indicators & Avionics Service Bulletins
• LADGPS — Local Area Differential Global Positioning System
• D.O.T — Department of Transport
• BA POOR — Braking Action Poor
• MTBF — Mean Time Before Failure
• CW — Continuous Wave
• IF — Intermediate Frequency
• RTLS — Return To Launch Site
• SWIM — System Wide Information Management
• OBTEX — Offboard Targeting Experiments
• EPA — Environmental Protection Agency (US)
• BM — Beam
• T-ATSU — Transferring ATS Unit
• NTSB — US National Transportation Safety Board
• FCL — Full Container Load
• XCOORD — Cancel Co-ordination
• DEQ — Delivered Ex Quay (shipping)
• W — Watt
• EADI — Electronic Attitude Director Indicator
• TMA — Traffic Management Advisor
• EXEC — Execute
• UA — Ukraine

• NESDIS — National Environmental Satellite, Data, and Information Service
• SMS — Safety Management Systems
• HF — High Frequency
• NAS — National Aircraft Standard
• OPS — Operations
• D-ATSU — A Downstream Air Traffic Services Unit
• GFE — Government-Furnished Equipment
• IR — Islamic Republic of Iran
• TBD — To Be Determined
• CPDLC — Controller Pilot Data Link Communications
• FOUO — For Official Use Only
• IF — Intermediate Fix
• FAS — Free Alongside Ship
• DES — Delivered Ex Ship
• ACT — Active
• WG — Working Group
• MCP — Mode Control Panel
• SH — Showers
• D-OTIS — Data Link Operational Terminal Information Service
• BTWN — Between
• NCS — National Communications System
• ITF — International Transport Workers' Federation
• MODEM — Modulator-Demodulator
• EBCDIC — Extended Binary Coded Decimal Interchange Code (pronounced Eb-see-dik) (cf. BCD)
• AEW — Airborne Early Warning
• THR — Thrust
• M:M — Many-to-Many Relationship
• LORAN — Long-Range Aid to Navigation
• ECAC — European Civil Aviation Conference
• MM — Middle Marker
• GE — Georgia
• PRF — Pulse Repetition Frequency
• BRK — Break
• UL — Uplink
• GUI — Graphical User Interface (goo-ey)
• W/MOD — With Modification of Vertical Profile
• SVC — Service
• CPS — Central Processing System
• W/STEP — With Step Change in Altitude
• AFCAC — African Civil Aviation Commission
• FRB — Failure Review Board
• MCT — Maximum Continuous Thrust
• OCT — October
• CRM — Cockpit Resource Management
• O-QAR — Optical Quick Access Recorder
• MIN/MAX — Minimum/Maximum
• WO — Without
• VAFORIT — VAFOR Implementation
• XLTR — Translater
• IMF — International Monetary Fund

• FA — Final Approach
• INFO — Information
• STAB — Stabilizer
• LOA — Length Overall
• CAB — Civil Aeronautics Board
• AFSS — Automated Flight Service Station
• B/CRS — Back Course
• TBO — Time Between Overhaul
• MRC — Monthly Recurring Charge
• RDIF — Radar Data Interchange Format
• COS — Chief of Staff
• MHZ — Megahertz (Megacycles Per Second)
• DIA — Denver International Airport
• PHA — Preliminary Hazard Analysis
• ANG — Air National Guard
• CBI — Computer Based Instruction
• DOLSP — Dropping Off Last Sea Pilot
• AD — Aerodrome
• XASM — Cancel Assume
• AFB — Air Force Base (USAF)
• D-TO NL — Derated Takeoff Engine Fan Speed
• R-CHANNEL — Random Access Channel
• T-CHANNEL — Time Division Multiple-Access Channel
• SVID — System V Interface Definition
• BL — Bale
• TAS — True Airspeed
• STOL — Short Takeoff And Landing
• M — Manual
• DVOF — Digital Vertical Obstruction File
• PDN — Public Data Network
• F&CM — Flow And Capacity Management
• FSS — Flight Service Station
• AMSL — Above Mean Sea Level
• TK — Turkish Airlines
• EMS — Environmental Management Systems
• PACOTS — Pacific Organised Track System
• CBT — Computer Based Training
• XAP — Crossing Alternate Proposal Message
• LIDO — Lufthansa Integrated Dispatch Operation
• ACK — Acknowledge (telecommunications; Cf. NAK)
• WT — Weight
• A/C — Aircraft
• XCONF — Delete CONFlict
• DDS — Digital Data Service
• M-ADS — Modified Automatic Dependent Surveillance
• L — Left
• P,R,D AREA — Prohibited, Restricted, or Danger Area
• SAC — Strategic Air Command
• C/N0 — Carrier-to-Noise-Density Ratio
• RMP — Radio Management Panel

• APA — Allied Pilots Association
• AUTOVON — Automatic Voice Network
• BL — Blowing (METAR descriptor)
• FTE — Full Time Equivalent
• BSS 1/1 — Basis 1 Port to 1 Port
• ANS — Answer
• FDD — Freight Demurrage Deadfreight
• SSB — Single Side Band
• COTR — Contracting Officer Technical Representative
• NOR — Notice of Readiness
• ACU — Antenna Control Unit
• C — Close
• FDR — Flight Data Recorder
• ARINC 753 — HF Data Link System
• NPV — Net Present Value {economics}
• EU — European Union (1994; formerly referred to as the EEC or EC)
• CIP — Capital Investment Plan
• FANS — Future Air Navigation System
• BOC — Bell Operating Company
• DES — Descent
• CMO — Certificate Management Office
• K — Kilo-
• FIM — Fault Isolation Manual
• BAF — Bunker Adjustment Factor
• RDP — Radar Data Processing
• FZFG — Freezing Fog
• ACI — Airports Council International
• V/TRK — Vertical Track
• MOD — Modified
• ARINC 542 — Airborne Oscillograph Flight Data Recorder
• APAPI — Abbreviated Precision Approach Path Indicator
• AMT — Aviation Maintenance Technician
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• P… — Prohibited Area
• VSCF — Variable-Speed Constant Frequency
• RSVN — Reservation
• RIB — Routing Information Base
• GA — General Average
• ARTCC — Air Route Traffic Control Center
• MOLCHOPT — More or Less Charterers Option
• SBIR — Small Business Innovation Research
• OCA — Oceanic Control Area
• ALS — approach lighting system
• RATCC — Radar Air Traffic Control Center
• XBRIGHT — Cancel highlighting
• DAARWIN — Distributed ATM Architecture based on
• C/S/S/N — Capacity/Safety/Security/Noise
• SAW — Surface Acoustic Wave
• SHF — Super High Frequency
• BA — Braking Action

• P.T.T — Push-to-Talk
• FOIA — Freedom of Information Act
• M/ASI — Mach/Airspeed Indicator
• DBS — Direct Broadcast Satellite
• IMPACT — Information Market Policy Actions
• DSS — Decision Support System
• AT — Air Transport
• PMS — Program Management System
• DIS — Distance
• MOCA — Minimum Obstruction Clearance Altitude
• RFC — Request For Change
• GPO — Government Printing Office
• TURB — Turbulence
• DOD — United States Department of Defense
• CRT — Cathode Ray Tube (type of TV)
• ISDN — Integrated Services Digital Network
• HADAMARD — Multi-radar processing written in ADA
• A/D — Analog-to-Digital
• RPI — Real Property Inventory
• COOP — Continuity of Operations
• CON — Continuous
• CONUS — Continental United States (48 Contiguous States and DC)
• DRAM — Dynamic Random Access Memory (dee-ram) (computing)
• CDM — Collaborative Decision Making
• TOP — Cloud Top
• DDD — Detailed Design Document
• FOT — Free On Truck
• OL — Operating Location
• SIP — State Implementation Plan
• ADIRS — Air Data Inertial Reference System
• JAA AMC — JAA Acceptable Means of Compliance
• MDT — Mean Down Time
• AOB — Air Order of Battle
• PFI — Private Finance Initiative
• APR — April River Airport, April River, Papua New Guinea
• OPT — Optimum
• PMS — Pavement Management System
• RTE — Route
• RAD — Radial
• HOV — High Occupancy Vehicle
• XGEO — Cancel GEO
• SP — Space
• CQD — Customary Quick Despatch
• ANA — All Nippon Airways
• SESAR — Single European Sky ATM Research
• BIM — Building Information Model
• HW — High Water
• C/N — Carrier-To-Noise Ratio
• IA — Inspection Authorization
• CR — Current Rate

• FY — Fiscal Year
• CFI — Certified Flight Instructor
• P.ACCS — Pairs of ACCs
• CAVU — Ceiling And Visibility Unlimited
• GDP — Ground Delay Program
• PPI — Plan Position Indicator
• FAQ — Frequently Asked Questions (sometimes Pronounced Fak)
• FAASTEAM — FAA Safety Team
• ILS — Instituteument Landing System
• OSI — Open Systems Interconnection (iso Standard)
• MCA — Minimum Crossing Altitude
• EPR — Engine Pressure Ratio
• NTE — Not-To-Exceed
• R-ATSU — The Receiving Air Traffic Services Unit
• AUG — August
• MEL — Minimum Equipment List
• I(FD) — MTI Improvement Factor
• IRU — Inertial Reference Unit
• AC — Advisory Circular
• PIREP — Pilot (weather) Report
• CDI — Course Deviation Indicator
• DAFIF — Digital Aeronautical Flight Information File
• ANC — Air Navigation Commission
• JAAC/JAA CE — JAA Committee
• TRU — True
• LOI — Letter Of Intent
• CDC — Computer Display Channel
• AWB — Air Waybill
• PT — Product Team
• BOD — Beneficial Occupancy Date
• RAD — Radio
• ALQDS — All Quadrants
• UT — Universal Time
• XOFF/PDR — Cancel Off Predetermined Route
• FRA — Federal Railroad Administration
• RCM — Requirements Correlation Matrix
• R,E&D — Research, Engineering and Development
• ARINC 424 — Navigation System Data Base
• DEST — Destination
• BCA — Benefit/Cost Analysis
• CFR — Code of Federal Regulations
• FR — From
• RAARR — Radar Arrival
• AFSPS — Arrival First Sea Pilot Station
• NEC — National Electric Code
• MIN — Minimum
• QAE — Quality Assurance Evaluator
• DA/H — decision altitude/height
• HAT — Height Above Touchdown
• FI — Flight Instructor

• ARP — Aerodrome Reference Point
• MN — Magnetic North
• WMO — World Meteorological Organisation
• BPS — bits per second
• HAZMAT — Hazardous Material
• JAARC — JAA Research Committee
• SAS — Scandinavian Airlines System
• I — Italy
• MTTR — Mean Time To Repair
• ATO — Air Traffic Organization
• XMITR — Transmitter
• XNSSR — Exit NSSR
• TC/OC — Technical Control and Operational Control
• GSA — U.S. General Services Administration
• AC — Altocumulus
• MPO — Metropolitan Planning Organization
• SES — Single European Sky
• PSTN — Public Switched Telephone Network
• FSM — Flight Schedule Monitor
• IA-5 — International Alphabet Number 5
• LABSC — LABS GS-200 Computer
• TCU — Towering Cumulus
• PFA — Probability of False Alarm
• AED — Automated external defibrillator
• PIC — Pilot In Command
• ARINC 747 — Flight Data Recorder
• NSSL — National Severe Storms Laboratory
• XFR — Transfer
• FTE — Flight Technical Error
• MRA — Minimum Reception Altitude
• TSU — Technical Support Unit
• FIFO — First In, First Out
• ITU — International Telecommunication Union
• HALS / DTOP — High Approach Landing System / Displaced Threshold Operations
• PCT — Percent
• TOR — terms of reference (ICAO/FAA)
• AO — Authorizing Official
• DID — direct inward dial
• PRE-OJT — Pre-On-the-Job Training
• NOAA — National Oceanic and Atmospheric Administration (US)
• TN — True North
• FPL — Full Performance Level
• AIR — Aircraft Certification Service
• ASI — Air Speed Indicator
• SAAFEA — South African Airways Flight Engineers Association
• MDD — Meteorological Data Distribution
• DTM — Digital Terrain Model
• CAA — Civil Aviation Authority
• DGAC — Direction Générale de l’Aviation Civile
• MBO — Management by Objective

• PDC — Pre-Departure Clearance
• QP — Quality Plan
• ALSF-2 — High Intensity Approach Lighting Systerm with Sequenced Flashing Lights.
• DFDAU — Digital Flight Data Acquisition Unit
• SQL — Structured Query Language
• ALSF1 — ALS with Sequenced Flashers I
• AS — Altostratus
• PROF — Profile
• FAACIS — FAA Communications Information System
• LABSR — LABS Remote Equipment
• DBE — Disadvantaged Business Enterprise
• HZ — cycles per second (hertz)
• CFR — Cost and Freight
• BTN — Between
• XFRQ — Cancel FreQuency message
• HIRO — High Intensity Runway Operation
• CFDS — Centralised Fault Display System
• COACP — Contract Of Affreightment Charter Party
• A&P — Airframe & Powerplant
• ASTERIX — All-purpose Structured Eurocontrol Radar Information Exchange
• AM — AeroMexico
• GUI — Graphic-User Interface
• SOW — Statement Of Work
• IA — International Alphabet
• I/AFSS — International AFSS
• PDR — Preferential Departure Route
• XHOLD — Cancel Hold
• ADCCP — Advanced Data Communications Control Procedures
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• YD — Yaw Damper
• IA/CC — Indirect Access/Common Control
• OMB — Office of Management and Budget (U.S.)
• FFA — Functional Failure Analysis
• DOS — Disk Operating System
• XEXPLT — Cancel Extrapolation
• LIDAR — Lander Light Detection and Ranging
• XFDM — Cancel FDM
• LGTD — Lighted
• ADF — Automatic Direction Finding
• FYG — For Your Guidance
• IMC — Instrument Meteorological Conditions
• JAAB/JAA-B — Joint Boards
• EBU — Engine Build Unit
• XIFL — Cancel Intermediate Flight Level
• DEA — Data Exchange Agreement
• A/P — Autopilot
• NAAPE — National Association of Aircraft Pilots and Engineers
• RAES — Royal Aeronautical Society
• QAR — Quick Access Recorder
• WBC — Weight and Balance Computer

• OU — Croatia Airlines
• DIST — Distance
• HDD — Head Down Display
• RDF — Radio Direction Finder
• ECMT — European Conference of Ministers of Transport
• VSP — Vertical Speed
• SDR — Service Difficulty Report
• ATZ — Aerodrome Traffic Zone
• D — Derated
• CISO — Chief Information Security Officer
• LOFT — Line-Oriented Flight Training
• PRI — Primary Rate Interface (ISDN)
• SGL — Signal
• AA — Always Afloat
• SCADA — Supervisory Control And Data Aquisition
• DR — Drifting (METAR descriptor)
• LED — law enforcement desk; light emitting diode
• VBFNG(HI) — High speed CAS at N g's to buffet onset
• LABSW — LABS Switch System
• PAMPLAY — PAM rePLAY system
• ANCA — Airport Noise and Capacity Act
• PRM — Precision Runway Monitor
• AMVER — Automated Mutual-Assistance Vessel Rescue system
• SAT — Static Air Temperature
• NOSIG — No Significant Change
• NMB — National Mediation Board
• DZ — Algeria
• HIWAS — Hazardous Inflight Weather Advisory Service
• IPT — Integrated Product Team
• COA — Contract Of Affreightment
• PKI — Public Key Infrastructure (cryptography)
• LT — Long Ton
• RTCA — Radio Technical Commission for Aeronautics
• CST — Centistoke
• ARINC — Aeronautical Radio Incorporated
• COGSA — U.S. Carriage of Goods by Sea Act
• NAVSAT — Navigation Satellite
• ASMA — Aerospace Medical Association
• ACFT — Aircraft
• DMA — direct memory access (computer term)
• VNAV — Vertical Navigation
• NEPA — National Energy Policy Act of 1992
• CDT — Controlled Departure Time
• IRS — Inertial Reference System
• ADDS — Aviation Digital Data Service
• ATAG — Air Transport Action Group
• IBM — International Business Machines Corporation
• CARSR — Common Air Route Surveillance Radar
• LW — Low Water
• CCITT — Comite Consultatif International de Telegraphique et Telephonique (International Telegraph and Telephone Consultative Committee) [now ITU-T]

• HP — Holding Pattern
• DR — Dead Reckoning
• MAX — Maximum
• CDB — Corporate Database
• PDPR — Per Day Pro Rata
• KARLDAP — Karlsruhe Automatic Data Processing and Display System
• COTS — Commercial Off the Shelf Software
• JALPA — Jamaica Air Line Pilots Association
• EFB — Electronic Flight Bag
• CONS — consumption
• MTTF — Mean Time To Failure
• CIF — Cost, Insurance, Freight
• FCC — Federal Communications Commission (US)
• ADDENDUM — Additional chartering terms at the end of a charter party
• TMC — Thrust Management Computer
• AQP — Advanced Qualification Program
• STAR — Standard Terminal Arrival Route
• PQP — Project Quality Plan
• LDAP — Lightweight Directory Access Protocol (pronounced Ell-dap)
• PVD — Plan View Display
• CAS — Calibrated Air Speed
• SSTS — Space Surveillance and Tracking System
• KBS — Knowledge-Based System
• OTV — Orbital Transfer Vehicle
• NAVDB — Navigation Data Base
• CLR — Clear
• ATE — Automatic Test Engineer
• EHF — Extremely High Frequency
• EXTRAP — Extrapolate
• QF — Quality Factor
• PCM — Pulse-Code Modulation
• EEG — Electro-EncephaloGram
• NORDO — No-Radio
• MOLOO — More or Less Owners Option
• DDE — Dynamic Data Exchange (in software parlance)
• RNG — Range
• RD — Requirements Document
• ARINC 743A — GPS/GLONASS Sensor
• XEU — European Currency Unit
• WAYPOINT — Position in space usually on aircraft's flight plan
• RAIM — Receiver Autonomous Integrity Monitoring
• DFAX — Digital Facsimile
• FLAS — Flight Level Allocation Scheme
• TCAS — Traffic Collision Avoidance System
• AOR — Area of Responsibility. The assigned area to any given unit.
• PBX — Private Branch eXchange (company phone system)
• SNR — Signal-to-Noise Ratio
• ADIZ — Air Defense Identification Zone
• AILS — Automatic Instrument Landing System
• CRDA — Converging Runway Display Aid

• SAE — Society of Automotive Engineers
• MAN — Manual
• HQ — Headquarters (HDQ Preferred)
• CZ — Czech Republic
• DML — Data Manipulation Language
• FDP — Flight Data Processing
• VCMAX — Active Maximum Control Speed
• FRT — Freight
• SGS 85 — Sovietic Geodetic System
• WSO — Weather Service Office
• MIPS — Millions of Instructions Per Second
• LSA — Lysergic Acid Amide
• ELBA — Emergency Locator Beacon Aircraft
• Z — Zulu (Greenwich mean time)
• MMR — Multi-Mode Receiver
• GW — Gross Weight
• CASS — Continuing Analysis and Surveillance System
• ACAIS — Air Carrier Activity Information System
• HBARO — Barometric Altitude
• ARTS — Automated Radar Terminal System
• EPROM — Erasable Programmable Read-Only Memory
• IFR — Instrument Flight Rules
• IMDG — International Maritime Dangerous Goods
• DBMS — Data Base Management System
• M/V — Merchant Vessel
• ARINC 746 — Cabin Communications System, Supplement
• ABV — Above
• DA — Descent Advisor
• GBAS — Ground Based Augmentation System
• TBC — The Boeing Company
• FIOS — Free In/Out Stowed
• HIRTA — High Intensity Radio Transmission Area
• ECAM — Electronic Centralized Aircraft Monitor
• FDEDANRSAOCLONL — Freight Deemed Earned, Discountless And Non-Returnable Ship And Or Cargo Lost Or Not Lost
• ATDNSHINC — Any Time Day/Night Sundays and Holidays Included
• VSWR — Voltage Standing Wave Ratio
• VDF — Very high frequency Direction Finding station
• AT&T — American Telephone and Telegraph (U.S. company, also known as "Ma Bell")
• RCR — Runway Condition Reading
• CI — China Airlines - Taiwan
• CG — Center of Gravity (DXS)
• MAG — Magnetic
• CMC — Central Maintenance Computer
• ACDO — Air Carrier District Office
• GEN — General Motors
• VBFNG(LO) — Low speed CAS at N g's to buffet onset
• MIT — Massachusetts Institute of Technology (U.S.)
• HZ — Haze (METAR Code)
• CAA PNG — Civil Aviation Authority of Papua New Guinea
• HALPA — Hellenic Air Line Pilots Association

• UN — United Narions
• ANSP — Air Navigation Service Provider
• ENG — Engine
• IMA — Integrated Modular Avionics
• FACF — Final Approach Course Fix
• OPM — Office of Personnel Management
• ARINC 572 — Mark 2 Air Traffic Control Transponder
• VCRI — Verification Cross Reference Index
• FZRA — Freezing Rain (METAR Code)
• VBF(LO) — Flaps up minimum buffet speed at current maneuver load factor minus altitude dependent variable
• QPSK — aeronautical quadrature phase shift keying
• KHZ — kilohertz (1000 cycles per second)
• MK — Republic of Macedonia
• ACPT — Accept
• BRI — Basic Rate Interface
• CIT — Compressor Inlet Temperature
• GCA — Ground-controlled approach
• LTIOV — Latest Time Information of Value
• DCA — Defensive Counter Air
• DGNSS — Differential Global Navigation Satellite System
• FANOMOS — Flight track and Aircraft NOise Monitoring System
• ASCP — Aviation System Capacity Plan
• C — Centigrade
• 16PF — Sixteen Personality Factor Questionnaire
• EAPTU — Air Line Pilots Trade Union
• OJT — On the Job Training
• ACID — Aircraft Identification
• DMN — Data Multiplexing Network
• VRS — Voice Response System
• DTED — Digital Terrain Elevation Data (dee-ted)
• IDS — Intrusion Detection System
• AFFSC (E) — Air Forces Flight Safety Committee (Europe)
• FE — Flight Examiner
• PVC — Permanent Virtual Circuit (ATM)
• BDI — Both Dates Inclusive
• 2D — Two-Dimensional
• MNM — Minimum
• DEM — Demurrage
• BOB — Bunker On Board
• TGT — Target
• PTH — Path
• FZDZ — Freezing Drizzle
• MIRL — Medium Intensity Runway Lights
• TLS — Target Level of Safety
• WO — World Airways, Inc
• CASE — computer-automated software engineering
• IPV6 — Internet Protocol Version 6
• TTY — Teletype Telex Machine
• RTS — Return To Service
• FBO — Fixed-Based Operator

• LT — Liner Terms
• PT — Total Pressure
• ARINC 571 — Inertial Reference System
• DNRCAOSLONL — Discountless and Non-Returnable Cargo and/or Ship Lost or Not Lost
• IS — Iceland
• TDOP — Time Dilution of Precision
• AP — Autopilot
• WTSPT — Waterspout
• NP — Network Protocol
• BAF — Belgian Air Force
• DHS — Department of Human Services
• GNP — gross national product (economics)
• POS — Position
• VTOL — Vertical Take-Off & Landing
• ARINC 557 — Airborne Voice Recorder
• FIW — Free in wagon
• BSC — Binary Synchronous Communication
• DNIC — Data Network Identification Code
• CRF — Central Repair Facility
• DSPY — Display
• DOS — United States Department of State
• DMU — Data Management Unit
• GMT — Greenwich Mean Time (Zulu)
• QDR — Reciprocal Magnetic Bearing
• NLA — New Large Aircraft
• ARINC 601 — Control/Display Interfaces
• FAC — Facilities
• PUP — Principal User Processor (NEXRAD)
• FAP — Final Approach Point
• ABM — Abeam
• GLD — Glider
• CDTI — Cockpit display of traffic information
• PABX — private automatic branch exchange (telephone)
• ARINC 610 — Guidance For Design and Integration of Aircraft Avionics Equipment In Simulators, Supplement 1
• CPD — Charterers Pay Dues
• RA — Resolution Advisory
• BRG — Bearing
• AIRS — Advanced Infrared Sounder
• VTS — Vessel Traffic Service
• CAT — Computer Aided Testing
• EANPG — Regional European Air Navigation Planning Group
• CY — Cyprus Airways Ltd
• EFAS — En Route Flight Advisory Service
• ARINC 542A — Digital Flight Data Recorder
• IFPZ — IFPS Zone
• RLLS — Runway Lead-In Light System
• EST — Estimated Starting Time
• RP — Restoration Priority
• LCN — Load Classification Number
• UPU — Universal Postal Union

• ACF — Area Control Facility
• SO — Southern Airways
• AIFSS — Automated International Flight Service Station
• AHL — Australian Hold Ladders
• LY — El Al Israel Airlines
• AIRNAV — Airports and Navigation Aids Database System
• ATA — Actual Time of Arrival
• EIA — Extended Interaction Amplifier
• LATA — Local Access and Transport Area
• ARINC 603 — Airborne Computer Data Loader
• C87A — Low Range Radar Altimeters, Issued 01/01
• BBB — Before Breaking Bulk
• ARINC 597 — Aircraft Communications Addressing And Reporting System
• C91A — Emergency Locator Transmitter, Issued 04/85
• XM — External Master
• MTBCF — Mean Time Between Critical Failures
• FMGC — Flight Management Guidance Computer
• KW — Kilowatt (one thousand watts) (measurement)
• ISA — International Standard Atmosphere
• FDOD — CFMU – Flight Data Operations Division
• ADM — Aeronautical Decision Making
• AAGDI — Automated Air Ground Data Interchange
• MVFR — Marginal Visual Flight Rules
• AO — Aircraft Operator
• AAIB — Air Accident Investigation Branch
• GML — Geography Markup Language
• AVG — Average Voltage Gain
• OO — SkyWest Airlines
• BY — Belarus
• LB — Local Battery
• ADES — Aerodrome of Destination
• GDOP — Geometric Dilution Of Precision
• RTO — Rejected Take-Off
• PRN — Pseudo-Random Noise
• CAA SI — Civil Aviation Authority of Solomon Islands
• NIMA — National Imagery and Mapping Agency (became National Geospatial-Intelligence Agency|NGA)
• GOES — Geostationary Operational Environmental Satellite
• AEWPD — Adapted EATM Work Programme Document
• AAP — Advanced Automation Program
• AWACS — Airborne Warning And Control System
• ACARS — Aircraft Communications Addressing and Reporting System
• T — Time
• TSTMS — Thunderstorms
• AIMS — Airplane Information Management System
• DRP — Disaster Recovery Plan
• DLP — Data Link Processor
• ARINC 559A — Mark 2 Airborne HF SSB/AM System
• FCC — Flight Control Computer
• FSP — Flight Strip Printer
• EAD SGR — EAD Sub-Group

• DABRK — Daybreak
• MAR — March
• RISC — Reduced Instruction Set Computer
• FIOST — Free In/Out and Trimmed
• FOQA — Flight Operations Quality Assurance Programs
• PII — Personally Identifiable Information
• HWCI — Hardware Configuration Item
• FIT — Free In Trimmed
• SIR — Screening Information Request
• DAMFORDET — Damages for Detention
• FACUTL — Facility Utilization System
• ELINT — Electronic Intelligence Satellite
• EG — Egypt
• NASA — National Aeronautics and Space Administration (US)
• EXER — Exercise
• ARINC 419 — Digital Data System Compendium
• SS 30 — 30 Minutes after Sunset
• DTS — Dedicated Transmission Service
• DES — Descend
• BCC — Battery Charge Controller
• TDMA — Time Division Multiple Access
• ICASM — International Congress of Aviation and Space Medicine
• 5LNC — Five Letter Name Code
• NRZ — Non-Return-To-Zero
• AAAA — Always Accessible Always Afloat
• ANP — Air Navigation Plan
• SASKI — Name of an ATS Route reporting point
• RPP — Radiation Protection Program
• FMF — Facility Master File
• TC — Transit Corridor
• CROB — Cargo Remaining on Board
• ALERFA — alert phase
• ASA — Airservices Australia
• AP — Airport
• LOA — Letter Of Agreement
• LDI — Landing Direction Indicator
• FDP/RDP — Flight Data Processing/Radar Data Processing
• A&E — Architecture and Engineering
• CDA — Continuous Descent Approach
• ADA — Advisory Area
• RAPPI — Random Access Plan-Position Indicator
• ECA — European Cockpit Association
• IMG — Immigration
• AMASS — Airport Movement Area Safety System
• AMS — Acquisition Management System
• EU-OPS — EASA Operations Regulations
• ELT — Emergency Locator Transmitter
• IAT — Investment Analysis Team
• GHZ — Gigahertz
• TT — Total Temperature

• HGT — Height
• XY — Ryan Air
• ATUTC — Actual Times Used to Count
• DETRESFA — distress phase (lCAO)
• FEC — Forward Error Correction
• GPRA — Government Performance and Results Act
• ADS-C — Automatic Dependent Surveillance-Contract
• VMIN — Basic Clean Aircraft Minimum CAS
• NSSFC — National Severe Storms Forecast Center
• ASDE-X — Airport Surface Detection Equipment - X (frequency) band
• FQR — Formal Qualification Review
• CFAR — Constant False Alarm Rate
• TMA — Terminal Area
• ERAM — En Route Automation Modernization
• FPO — Flight Procedures Office
• PALLAS — Phased Automation of the Hellenic ATC System
• CLC — Course Line Computer
• IAS — Indicated Air Speed
• EAMG SSG — EAMG Systems Sub-Group
• AAIB — Air Accidents Investigation Branch
• PSS — Packet Switched Service
• LRNS — Long-Range Navigation System
• IATA — International Air Transport Association
• RTA — Required Time of Arrival
• ADA — Air Defense Area
• SSEC — Static Source Error Correction
• CPS — characters per second
• ADT — Air Data Tester
• MMU — Memory Management Unit
• DCS — Double Channel Simplex
• EIS — Environmental Impact Statement (US)
• CAA NZ — Civil Aviation Authority of New Zealand
• MOGAS — Motor Gasoline
• IISLS — Improved Interrogation Side Lobe Suppression
• AD — airworthiness directives (FAA)
• NTN — Network Terminal Number
• BWAD — Brackish Water Arrival Draft
• HU — Hungary
• EV — every
• PTR — Program Technical Report
• KM — Kilometer (1,000 meters)
• RMS — root mean square (preferred over "RMS")
• ARINC 579 — Airborne VOR Receiver
• CAAFI — Commercial Aviation Alternative Fuels Initiative
• NRT — Net Restricted Tonnage
• SRV — Server
• EIRP — EffectiveIsotropic Radiated Power
• VPATH — Vertical Path
• TSE — Total System Error
• PBD — Place Bearing/Distance

• CAT — Category (e.g. CAT-5 cable)
• FPS — Flight Progress Strip
• SM — Statute Mile
• MCC — Maintenance Control Center
• INS — Inertial Navigation System
• BENDS — Both Ends (shipping)
• BCR — Benefit/Cost Ratio
• MBPS — Megabits per second
• PPL — Private Pilot License
• JTSO — Joint Technical Standard Order
• TO EPR — Takeoff Engine Pressure Ratio
• ATA — Airport Traffic Area
• O&M — Operation and Maintenance
• SNGL — Single
• CFWU — Central Flow Weather Unit
• NEG — NEGative
• ACL — Altimeter Check Location
• AT&T ASDC — At&t Agency Service Delivery Center
• DOC — Document
• AGHME — Aircraft Geometric Height Measurement Element
• FWAD — Fresh Water Arrival Draft
• UIR — Upper Information Region
• CVSM — Conventional Vertical Separation Minimum
• TDD — Time Division Duplex
• AWIPS — Advanced weather Interactive Processing System (NOAA)
• FOR — Free On Rail
• PAPI — Precision Approach Path Indicator (aviation)
• DCE — Data Communication Equipment
• NADSW — NADIN Switches
• IOT&E — Independent Operational Test and Evaluation
• ALT HOLD — Altitude Hold Mode
• CLG — Calling Line
• VGND — Ground Velocity
• OBO — Ore/Bulk/Oil vessel
• KCAS — Knots Calibrated Airspeed
• APS — Arrival Pilot Station
• MDO — Marine Diesel Oil
• PALPU — Pancyprian Airline Pilots Union
• RSR — en-Route Surveillance Radar
• TI — Texas International
• FTI — FAA Telecommunications Infrastructure
• L/C — Letter of Credit
• SAS — Scandinavian Airline Systems
• AAF-1 — Director of Airway Facilities
• IFSS — International Flight Service Station
• MAINT — Maintenance
• RPR — Real Property Report
• FPB — Flight Progress Board
• SDLC — Software development life cycle
• AVMED — Aviation Medicine

• IM — Inner Marker
• ARINC 575 — Mark 3 Subsonic Air Data System
• IG — Inspector General (HHS)
• EADCOS — EAD Co-ordination Group
• OP — Operational
• IW — Inside Wiring
• ITI — Interactive Terminal Interface
• GENOT — General Notice
• HEX — Hexadecimal (base 16)
• NPRM — Notice Of Proposed Rule Making
• TEMP — Temperature
• OUTB — Outbound
• HVAC — Heating, Ventilating, And Air Conditioning
• PSN — Packet Switched Network
• ALSTG — Altimeter Setting
• AIT — Automated Information Transfer
• FEP — Front End Processor
• MOD — Memorandum of Decision
• ECG — En Route Communications Gateway
• CIRM — International Radio Maritime Committee
• ARO — Air Traffic Services Reporting Office
• EIB — European Investment Bank
• AFDK — After Dark
• DARP(S) — Dynamic Airborne Route Planning (System)
• AFS — Aeronautical Fixed Service
• NPA — Non Precision Approaches
• GNSS — Global Navigation Satellite System
• RTOS — Real-Time Operating System
• DHDATSBE — Despatch Half Demurrage on All Time Saved Both Ends
• NTZ — No Transgression Zone
• RSPL — Recommended Spare Parts List
• OH — Operational Handbook
• APC — Aeronautical Passenger Communication
• WPM — speech--words per minute
• CCIR — International Radio Consultative Committee (French Acronym)
• MDA — McDonnell-Douglas Aerospace
• AWOP — All Weather Operations Panel (ICAO)
• IANSSC — IANS Steering Committee
• CCSD — command communications service designator; control communications service designator
• DESP — Despatch
• AVBL — available
• RMU — Radio Management Unit
• VS — Design Speed for Maximum Gust Intensity
• ACNZ — Airways Corporation of New Zealand Ltd
• AFISO — Aerodrome Flight Information Service Officer
• NAABSA — Not Always Afloat But Safely Aground
• SATSAR — Satellite-aided Search And Rescue
• AF — Air France
• IANS — Institute of Air Navigation Services
• AWOG — All Weather Operations Group

• NRL — Naval Research Laboratory
• LC — Local Control
• CMIP — Common Management Information Protocol (ATM)
• TLV — Type-Length-Value
• SLEP — Service Life Extension Program
• IAO — In And Out
• CAS — Close Air Support
• FDIO — Flight Data Input/Output
• EST — Estimated Ship Time
• DPI — Dots per inch.
• CASA — Civil Aviation Safety Authority
• C-ATSU — Controlling ATS Unit
• OVERBOARD — Over the side or out of the ship
• DIR — Directory
• ARINC 609 — Design Guidance For Aircraft Electrical Power Systems
• AIDC — Air traffic control Inter-Facility Ground Data Communications
• CDR — Coded Departure Routes
• ADSY — Administrative Equipment Systems
• EFTA — European Free Trade Association (Geneva)
• EMAS — Engineered Materials Arresting System
• NFPA — National Fire Protection Association
• VMC — visual meteorological conditions
• ERDF — European Regional Development Fund
• CD-ROM — Compact Disk - Read Only Memory
• RPV — Remotely Piloted Vehicle
• ARINC 421 — Guidance For Standard Subdivision of ATA Spec 100 Numbering System for Avionics
• E M — signalling
• WFTU — World Federation of Trade Unions
• MECO — Main Engine Cutoff
• PFN — Pulse-Forming-Network
• VCCS — Voice Communication and Control System
• ARP — Aerospace Recommended Practice
• QTG — Qualification Test Guide
• LOE — Line Oriented Evaluation
• NSW — No Significant Weather
• ARINC 429 — Mark 33 Digital Information Transfer System
• QDM — Magnetic Heading
• FREE EXINS — Free of any Extra Insurance
• AALPBH — Association of Airline Pilots in Bosnia & Herzegovina
• V — Volt (measurement)
• OO — Owners Option
• TMU — Traffic Management Unit
• CNL — Cancel
• POS REF — Position Reference
• DAF — Deliver At Frontier
• ASP — Arrival Sequencing Program
• NADA — NADIN Concentrator
• FCL — Flight Crew Licensing
• SU — Aeroflot Russian Airlines
• ARPA — Advanced Research Project Agency's

• ARINC 745 — Automatic Dependent Surveillance, Supplement 1
• STANINE — Standard Nine Score
• FIDS — Flight Information Display System
• SEP — September
• ARINC 596 — Mark 2 Airborne SELCAL System
• STTR — Small Business Technology Transfer
• VG — Ground Velocity
• BOFFER — Best Offer
• NMC — National Meteorological Center (US)
• DEP — Depart
• AKARD — Available Knowledge And required system Research and Development
• HAWOP — Helicopter All-Weather Operations Study Group
• VCO — Voltage Controlled Oscillator (Oscillation)
• NOTAMN — New Notam
• NPR — National Performance Review (office)
• PHPD — Per Hatch Per Day
• J2EE — Java 2 Enterprise Edition
• ADS — automatic dependent surveillance
• ATHWARTSHIPS — At right angles to the centreline of the ship
• SSR — Software Specification Review
• HDOP — Horizontal Dilution of Precision
• RSTD — Restricted
• KT — Knots
• IFO — International Field Office
• ADLY — Arrival Delay
• MMI — Marshall Management Instruction
• F — Degrees Fahrenheit
• AJR — System Operations Services, Air Traffic Organization
• HHMM — Hours and minutes
• VCR — Visual Control Room
• REIL — Runway End Identification Light
• AVAIL — Available
• IVSI — Instantaneous Vertical Speed Indicator
• FILO — Free In/Liner Out
• HST — Hypersonic Transport
• LIFR — Low Instrument Flight Rules
• CX — Cathay Pacific Airways
• MSDA — Material Safety Data Sheet
• FIO — Free In/Out
• OWS — Owners
• IFTO — International Federation of Tour Operators
• CPC — Certified Professional Controller
• NCAR — National Center for Atmospheric Research (US)
• TODA — Take-Off Distance Available
• SARSAT — Search and Rescue Satellite
• ASPH — Asphalt
• ADSP — Automatic Dependent Surveillance Panel
• SBGP — State Block Grant Program
• ITSM — Information Technology Service Management
• ATM — Air Transportation Management

• ARINC 605 — Users Guide For ARINC 616 Avionics Subset Of ATLAS Language
• ACCS — Air Command and Control System
• JMCT — Job Management Consultative Team [job analysis]
• SMR — Surface Movement Radar
• CNCL — Cancel
• LVL CHG — Level Change
• AOPA — Aircraft Owners and Pilots Association
• FP — Free Pratique
• 1 PPS — One Pulse Per Second
• FAA — Federal Aviation Authority
• PERF — Performance
• ATCSCC — Air Traffic Control System Command Center
• VCSS — Voice Communications Switching System
• ARINC 608 — Standard Modular Avionics Repair And Test System
• EDF — Electricité de France
• A01 — Automated Observation Without Precipitation Discriminator
• AEFMP — Algeria, Spain, France, Maroc, Portugal Project
• ARINC 573 — Aircraft Integrated Data System Mark
• BROB — Bunkers Remaining on Board
• XTRK — Cross Track Error
• BAREBOAT CHTR. — Bareboat Charter
• SHEL — Software, Hardware, Environment, Liveware
• MAPT — Missed Approach Point
• ASDA — Accelerate-Stop Distance Available
• CAEM — Commission for Aeronautical Meteorology (WMO)
• JUN — June
• KE — Korean Airlines
• NSAP — Network Service Access Point
• ETD — Estimated Time of Departure
• CRT — Choice Reaction Time
• IUAI — International Union of Aviation Insurers
• SSM — Sign Status Matrix
• OPI — Office of Primary Interest
• SSR MODE S WG — Secondary Surveillance Radar Mode Selective WG
• ELVENT — Electric Ventilation
• TIAS — True Indicated Airspeed
• AEA — Association of European Airlines
• SWAP — Severe Weather Avoidance Program
• APRT — Airport
• JCN — Job Control Number
• AOR-E — Atlantic Ocean Region East
• IAR — Intersection of Air Routes
• HUD — Head-Up Display
• C&A — Certification and Accreditation
• FSRM — Facility Security Risk Management
• GNDCK — Ground Check
• TOD — Top of Descent
• LEC — Local Exchange Carrier
• CTR — Container Fitted
• XNG — Crossing

• A02 — Automated Observation With Precipitation Discriminator
• ARINC 561 — Air Transport Inertial Navigation System - INS
• ARINC 574 — Passenger Announcement, Entertainment & Service Multiplex System
• MNOP — Maximum Normal Operating Pressure
• BI — Both inclusive
• A/A — Air/Air
• VSBY — Visibility
• ANTHAM — Antwerp-Hamburg Range
• DNSTRM — Downstream
• OFT — Outer Fix Time
• LLWAS — Low Level Wind Shear Alert System
• EFQM — European Foundation for Quality Management's
• AJW — Technical Operation Services, Air Traffic Organization
• ATAF — Allied Tactical Air Force (NATO)
• HDG — Heading
• DG — Directional Gyroscope
• BADA — Base of Aircraft Data ; Aircraft performance Data
• TBN — To Be Notified
• ATSAP — Air Traffic Safety Action Program
• KBPS — kilobits per second
• ARPL — ADEXP Format Repetitive Flight Plans Message
• VRB — Variable
• FARAWAY — Fusion of Radar and ADS data through two WAY data link
• PFR — Probability of Failure Repair
• SN — Brussels Airlines
• DL — Downlink Message
• HALO — High Altitude, Low Opening (skydiving term)
• ODAL — Omnidirectional Approach Lighting System
• HSI — Horizontal Situation Indicator
• DETR — Department of the Environment, Transport and the Regions
• AFTN — Automated Fixed Telecommunications Network
• ATFM — air traffic flow management
• AVOL — aerodrome visibility operational level
• EQPT — Equipment
• ACSE — Application Control Service Element
• DOF — Date of Flight
• AMSS — Aeronautical Mobile Satellite Service
• SSAP — Source Service Access Point
• ADZY — Advisory
• TMC — Traffic Management Coordinator
• ASLAR — Aircraft Surge Launch And Recovery
• LVB — Luchtverkeersbeveiliging
• EFSTS — Electronic Flight Strip Transfer System
• SEQ — Sequence
• TOT — Total
• CWY — Clearway
• ARINC 576 — Mark 4 Subsonic Air Data System
• EVAS — Enhanced Vortex Advisory System
• CMA — Context Management Application
• ARF — Airport Reservation Function

• ATMAC — Air Traffic Management Advisory Committee
• TDWR — Terminal Doppler Weather Radar
• FCA — Free Carrier Alongside
• CD — Candela
• IFF — Identification Friend or Foe (radar)
• IRM — information resource management
• ALCE — Airlift Control Element
• GNLU — GNSS Navigation and Landing Unit
• NORAC — No Radio Contact
• BAHAMAS ALPA — Bahamas Airline Pilots Association
• ALRS — Alerting Service
• ACCUM — Accumulate
• NWS — National Weather Service (formerly U.S. Weather Bureau)
• CPD — Continuous Professional Development
• P&I — Protection and Indemnity insurance
• AIG — Airbus Industries Group
• AFO — Airport Field Office
• CART — Classification And Regression Tree (method In Statistical Analysis)
• AAS — advanced automation system (FAA)
• TYPH — Typhoon
• CAP — Combat Air Patrol
• MNS — Mission Needs Statement
• RCP — Radio Control Panel
• FST — First
• ARINC 408A — Air Transport Indicator Cases And Mounting
• DATALINK — Digitized Information Transfer (air/ground)
• EFMS — Experimental Flight Management System
• NCD — No Computed Data
• A/C — Aircraft Commander
• NOTAMC — Notam Cancelling another Notam
• IAPL — IFPS APL Message
• AAA — Amended meteorological message
• JUL — July
• MTI — Moving Target Indicator
• AY — Finnair, Oyj - Finland
• VC — Design Cruising Speed
• 3D — Three Dimensional
• CAVOK — Clouds and Visibility OK
• ELBA — Emergency Location Beacon-Aircraft
• CRAF — Civil Reserve Air Fleet
• AOC — Airline Operation Control
• OGC — Open Geospatial Consortium
• ALTRV — Altitude Reservation
• ARINC 566A — Mark 3 VHF Communications Transceiver
• FIR — Flight Information Region
• AIRAC — Aeronautical Information Regulation and Control
• F&E — Facilities and Equipment
• EIU — Even If Used
• HAPI — Helicopter Approach Path Indicator
• HIDE — Harmonised, Integrated Development Environment

• MHA — Minimum Holding Altitude
• TWY — Taxiway
• FRQ — Frequent
• ARSR — Air Route Surveillance Radar
• MAUW — Maximum All Up Weight
• CHTRS — Charterers
• DPSK — Differential Phase Shift Keying
• ECAR — European Civil Aviation Requirement
• TSRV — Transport System Research Vehicle
• PRP — Pulse Repetition Period
• HSM — High Speed Modem
• COP — Custom of Port
• AEP — FAA Office of Aviation Policy Planning and Environment
• QBI — Compulsory IFR flight
• CONOPS — Concept of Operations
• ATLC — Atlantic
• DITCO — Defense Information Technology Contracting Office (formerly DECCO)
• APPA — Asociacion Profesional de Pilotos Aviadores de Costa Rica
• RMS ERROR — Root Mean Square error.
• ADCOM — Address Commission
• CPIC — Capital Planning and Investment Control
• DEG — Degree
• IR — Ice on Runway
• BSS — Basis
• WGS 84 — World Geodetic System 1984
• IVRS — interim voice response system
• GRT — Gross Registered Tonnage/Tons
• ODIF — Open Document Interchange Format
• AZM — Azimuth
• CNTRLN — Centerline
• NBAA — National Business Aircraft Association
• DAPS — Days all Purposes
• RFL — Requested Flight Level
• DIP — Drop and Insert Point
• CNVTV — Convective
• AOM — Aircraft Operating Manual
• PCA — Propulsion Controlled Aircraft
• RTC — Radio Transmission Control
• V1 — Take-Off Decision Speed
• ID — IDentifier
• BASE AM — Base Arrival Manager
• ATC-HMI — Air Traffic Control Human Machine Interface
• BA — Barometric Altitude
• ATCT — Airport Traffic Control Tower
• LAAS — Local Area Augmentation System
• ARINC 740 — Multiple-Input Cockpit Printer
• AI — Application Interface
• OPX — Off-Premises Exchange
• ARINC 306 — Guidance For Designers Of Aircraft-Electronic Installations
• BN — Booking Note

• SMPS — Sector Maintenance Processor Subsystem
• LDR — Labor Distribution Reporting
• TCP / IP — Transmission Control Protocol / Internet Protocol
• JURG — Joint Users Requirements Group
• ASYNC — Asynchronous
• V&V — Validation & Verification
• LOS — Line-Oriented Simulation
• FREQ — Frequency
• DRAUGHT — Depth to which a ship is immersed in water
• CEC — Commission of the European Communities ;
• GEADGE — German Air Defense Ground Environment
• HDWTS — Half Despatch Working Time Saved
• UAB — Until Advised By
• SSR MODE S — Selective Address SSR
• SVN — Satellite Vehicle Number
• CRN — Crane
• AOC — Aerodrome Obstacle Chart
• ERIP — EAD Remote Interface Package
• BKN — Broken Sky (METAR Code)
• AECB — Atomic Energy Control Board
• ARINC 606 — Guidance For Electrostatic Sensitive Device Utilisation & Protection, Sup. 1
• OPR — Office of Primary Responsibility
• EVM — Earned Value Management
• CHI — Computer-Human Interface
• EAD — Earliest Arrival Date
• SARPS — Standards and Recommended Practices
• PROM — Programmable Read Only Memory (chip)
• HG — Mercury (Latin Hydrargyrum)
• COV — Cover
• DFRT — Deadfreight
• ONC — Operational Navigation Chart
• SITA — Société Internationale de Télécommunications Aéronautiques
• LON — Longitude
• MTD — Moving Target Detection
• ASE — Altimetry System Error
• LGT — Light
• DALR — Digital Audio Legal Recorder
• FHEX — Fridays/Holidays Excluded
• LUX — Findel International Airport, Luxembourg-Findel, Luxembourg
• DMSH — Diminish
• IROI — Instantaneous Return on Investment
• C/S — Call Sign
• FEB — February
• ABOARD — On or within the ship
• SARP — Signal Automatic Radar Processing
• ATS — Air Traffic Services
• ITIL — Information Technology Infrastructure Library
• DEGS — Degrees
• EDS — Enterprise Database System
• AIG — Accident Investigation & Prevention

• RNAV — Random Navigation Area Navigation
• AFL — Actual Flight Level
• ALPA — Japan Air Line Pilots Association of Japan
• OAT — Outside Air Temperature
• RUC — Rapid Update Cycle
• SATCAS — Selenia Air Traffic Control Automated System
• BRA — Bearing, Range and Altitude
• AAIM — Aircraft Autonomous Integrity Monitoring
• ASIAS — Aviation Safety Information Analysis and Sharing
• AAME — Association of Aviation Medical Examiners
• RMI — Radio Magnetic Indicator
• ATCRB — Air Traffic Control Radar Beacon
• SDP — Service Delivery Point
• OGE — Operational Ground Equipment
• FADEC — Full Authority Digital Engine Control
• CPE — Customer Premise Equipment
• PTT — Press to Talk
• MSSR — Monopulse Secondary Surveillance Radar
• VCMIN — Active Minimum Control Speed
• FOD — Foreign Object Damage
• IOSA — Iata Operational Safety Audit
• AOCC — Atlantic Operations Control Center
• PRKG — Parking
• LOI — Letter of Indemnity
• AVGAS — Aviation Gasoline
• DABS — Discrete Address Beacon System
• DPTH — Depth
• DF — Direction Finder (Finding)
• OTR — Oceanic Transition Route
• CDV — Compressed Digital Video
• VTR — Variable Takeoff Rating
• PHINOM — Nominal Bank Angle
• PCN — Project Control Number
• 1 :1 — One-to-one relationship
• MB — Merchant Broker
• CBFT — Cubic Feet
• OIS — OGE Input Simulator
• P — Procedure-Required Tuned NAVAID
• EOF — Emergency Operating Facility
• APDSG — Airspace Planning & Development Sub-Group
• ACCT — Accounting Records
• ACSA — Allied Communications Security Agency
• CP — charter-party
• SRQ — Slot Request
• DNSLP — Downslope
• STAC — Second Time Around Clutter
• ADLP — Aircraft Data Link Processor
• EUROCONTROL — European Organisation for the Safety of Air Navigation
• ATILO — Administrative Tribunal of the International Labour Organisation
• RPC — Restoration Priority Code

• B&H — Bosnia & Herzegovina
• ACS — airspace control system
• BELOW — Beneath the deck
• XPNDR — Transponder
• DAR — Designated Agency Representative
• AMA — Area Minimum Altitude
• ACAA — Air Carrier Association of America
• CDR — Cost Detail Report
• ASPW — Any Safe Port in the World
• FMC — Federal Maritime Commission's
• ABDIS — Automated Data Interchange System Service
• EXTRM — Extreme
• ITMRA — Information Technology Management Reform Act (Part of the Clinger-Cohen Act)
• WSW — West-South-West
• IFOR — Implementation Force
• ASC — AUTODIN Switching Center
• DWAT — Deadweight
• PD — Profile Descent
• EGPWS — Enhanced Ground-Proximity Warning System
• AFA — Association of Flight Attendants
• PELA — Proficiency test in English Language for ATCOs
• CNS/ATM — Communication, Navigation and Surveillance / Air Traffic Management
• ATCO — Air Taxi Commercial Operator
• ARINC 585 — Electronic Chronometer System
• IGFET — Insulated Gate Field Effect Transistor
• A/I — Accident/Incident
• SGI — Silicon Graphics Incorporated
• CDD — Corporate Data Dictionary
• SF — Special Freighter
• JPDA — Joint Probabilistic Data Association
• NW — Northwest Airlines
• ADIC — ATS Interfacility Data Communications
• AAC — Airline Administrative Communication
• AARA — Amsterdam-Antwerp-Rotterdam Area
• EL — Electro-Luminescent
• CACRC — Commercial Aircraft Composite Repair Committee
• PAA — Plot Accuracy Analysis
• IAASM — International Academy of Aviation and Space Medicine
• AFIS — Airport Flight Information Service
• POS INIT — Position Initialization
• DA — Disbursement Account
• JTIDS — Joint Tactical Information Distribution System (djay-tidz)
• ARINC 413A — Guidance For Aircraft Power Utilisation And Transient Protection
• DFI — Direction Finding Indicator
• SALS — Short Approach Lighting System
• CWBS — Contract Work Breakdown Structure
• TRK — Track
• GO — Gas Oil
• NCW — Non Conformance Warning
• RSLS — Receiver Side Lobe Suppression

• ERSS — Eurocontrol Radar Surveillance Standard
• FRA — Flap Retraction Altitude
• A — Aeroplane
• COBALT — Common Objective Alignment Team
• D-ATIS — Digital - Automatic Terminal Information Service
• DF — Direction Finding or Finder
• DVD — Dual View Display
• NGA — National Geospatial-Intelligence Agency (formerly National Imagery and Mapping Agency; US government)
• TBS — To Be Supplied(by government)
• CWAR — Continuous Wave Acquisition Radar
• ADVY — Advisory
• IAR — Investment Analysis Report
• CPCS — Consolidated Production Control System
• 4D FMS — 4D Flight Management System
• LH — Lufthansa German Airlines
• FIOT — Free In/Out and Trimmed
• HTZ — Helicopter Traffic Zone
• TX / RX — Transmitter / Receiver
• VTOL — Vertical Takeoff And Landing
• ATOS — Air Transportation Oversight System
• TSNT — Transient
• TMG — Tourig Motor Glider
• SRZ — Special Rules Zone
• AMIS — Aircraft Management Information System
• NMCS — Network Monitoring and Control System
• FPLMTS — Future Public Land Mobile Telecommunications System
• SFOR — UN Stabilisation Force (in Bosnia And Herzegovina)
• ECS — Environmental Control System (Subsystem)
• AEREA — Association of European Research Establishments in Aeronautics
• ROC — Regional Operations Center (NATO)
• HDLTSBENDS — Half Despatch Lay Time Saved Both Ends
• NCB — National Cargo Bureau
• ETE — Estimated Time En Route
• CZM — Conventional Zero Meridian
• FIN — Finnair Oyj, Finland
• CARATS — Collaborative Actions for Renovation of Air Traffic Systems
• AFIL — Air Filed Flight Plan
• BANS — BRITE Alphanumeric System
• DGELG — Dangerous Goods European Advisory Group
• APN — apron
• ADZD — Advised
• SSR — secondary surveillance radar (ICAO/FAA)
• MTR — Military Training Route
• TYP — Aircraft Type
• AFIZ — Aerodrome Flight information Zone
• BASE — Cloud base
• BRM — Barometer
• FRG — Federal Republic of Germany's
• ATLAS — Air Traffic Land and Air Study
• PRORES — Problem Resolution

• ISLS — Interrogation Side Lobe Suppression
• ALRS — Approach Lighting System
• CRT — Cargo Retention Clauses
• OMI — Organisation Maritime Internationale (French: International Maritime Organization; UN)
• LDG — Landing (aviation)
• DEIS — Draft Environmental Impact Statement (US)
• NPS — Navigation Performance Scales
• ARINC 742 — Design Guidance For Windshear Warning and Guidance Equipment
• CFCS — Central Flow Control Service
• FOQ — Free On Quay
• APA(CV) — Air Line Pilots Association (Cape Verde)
• LRU — Line Replacement Unit
• BSS — Best Signal Selection
• AATT — Advanced Aviation Transportation Technology
• TKX — Crosstell Tracker
• IDENT — Identification
• VASI — Visual Approach Slope Indicator
• FPM — Feet Per Minute
• SATCOM — Satellite Communication
• EFIS — Electronic Flight Information System
• TLA — Title Line Area
• EATCHIP — European Air Traffic Control Harmonisation and Integration Programme
• ASQP — Airline Service Quality Performance
• DP — Dewpoint Temperatue
• IUHTAUTC — If Used, Half Time Actually To Count
• LZ — Balkan Bulgarian Airlines
• ADVO — Administrative Voice
• ETN — Electronic Telecommunications Network
• ARINC 602 — Test Equipment Guidance
• ACCID — Notification of an aircraft accident
• ATR — Air Traffic Requirements
• JAN — January
• ADTN — Administrative Data Transmission Network
• ETO — Estimated Time Over
• BR — Eva Airways Corporation
• NAT NAM — North Atlantic / North America
• EFPM — Extended Flight Plan Message
• SVVP — Software Verification and Validation Plan
• DER — Departure End of the Runway
• PALS — Precision Approach Lighting System
• TDM — Total Delay in Minutes
• MOC — Memorandum Of Cooperation
• OK — Czech Airlines
• CEQ — Council on Environmental Quality (U.S.)
• DEM — German mark
• LOW — Last Open Water
• BRF — Brief
• IU — If Used
• PAWES — performance assessment and workload evaluation
• FRZN — Frozen

• MSK — Minimum Shift Keying
• A/S — Alongside
• AFD — Airport Facility Directory
• AVHRR — Advanced Very High-Resolution Radiometer
• ABAS — Aircraft-based Augmentation System
• EU-FCL — EASA Flight Crew Licensing
• AMSSP — Aeronautical Mobile Satellite Service Panel
• EEC — Eurocontrol Experimental Centre
• RMK — Remark
• CG — centre of gravity
• ESEWD — East-Southeastward
• NCF — National Control Facility
• FSYS — Flight Service Station Equipment Systems
• QUAD — Quadrant
• ADSEL — Address Selective SSR System
• DEM — Digital Elevation Model
• PALPA — Pakistan Air Line Pilots' Association
• AAPA — Association of Asia Pacific Airlines
• LTP — Landing Threshold Point
• TWIP — Terminal Weather Information for Pilots
• REQ — Request
• PROC — Procedure
• AFTIL — Airway Facilities Tower Integration Laboratory
• GES — Ground Earth Station
• QFU — Magnetic orientation or runway in use
• DTU — Data Terminating Unit
• OVC — Overcast (METAR Code)
• CNS/ATM-1 — Communication, Navigation and Surveillance / Air Traffic Management Package 1
• BT — berth terms
• FZL — Freezing Level
• RAPCO — Radar Approach Control
• ARINC 743 — Airborne Global Positioning System Receiver
• ARINC 751 — Gate-Aircraft Terminal Environment Link - Aircraft Side
• GLOSS — Global Sea Level Observing System (of IOC)
• ADIS — Automatic dependent surveillance and Data Link Interim System
• RSC — Rescue Sub Centre
• ASI — Aviation Safety Inspector
• OUNS — Operational Navigation System
• CUP — Computer Utility Program
• CLT — Calculated Landing Time
• DRDF — Digital Readout Direction Finder
• RAPPI — Radar Access Plan Position
• PABX — Private Automated Branch EXchange (company Phone System)
• PIREP — Pilot Report
• NASTEP — National Airspace System Technical Evaluation Program
• ARINC 752 — TFTS Airborne Radio Sub-System
• ALSF2 — ALS with Sequenced Flashers II
• PANS — Procedures for Air Navigational Services
• VAP — Visual Aids Panel
• CWP — Controller Working Position

• SHL — Saville and Holdsworth Ltd
• ALTM — Altimeter
• RID — review item description
• CASOR — Civil Area Services Operations Room
• FAC — Fast as can
• DDA — Dedicated Digital Access
• ITEB — Information Technology Executive Board
• AUTONAV — Auto-Navigation
• GDLP — Ground Data Link Processor
• LAYCAN — Layday Cancelling Date
• PFL — Planned Flight Level
• VAQ — VHF Avionics Qualification
• AID — Airport Information Desk
• XMT — Excluding
• CFP — Cold Front Passage
• FTS — Federal Telecommunications System
• ATCI — Airport ATC and Information systems
• COB — Closing of Business
• NYPE — New York Produce Exchange
• FACC — Feature and Attribute Coding Catalogue
• GRI — General Rate Increase
• ADIZ — Air Defence Identification Zone
• ADZ — Advise
• CYTA — Cyprus Telecommunications Authority
• LOCID — Location Identifier
• OBST — Obstacle
• ARINC 577 — Audible Warning System
• PTUL — Pilots Trade Union of Latvia
• MODE C — Altitude Reporting Mode of Secondary Radar
• TARE — Telegraphic Automatic Relay Equipment
• WXXM — Weather eXchange Model
• AIRPROX — The code word used in air traffic incident report to designate aircraft proximity
• ISPS — International Ships and Port Security system
• COCESNA — Central American Corporation for Air Navigation Services
• ARINC 578 — Airborne ILS Receiver
• OIG — Office of the Inspector General
• AOV — Air Traffic Safety Oversight Service
• WPX — Next waypoint on the flight plan
• UHF — Ultrahigh Frequency
• METAR — Meteorological Terminal Aviation Routine Weather Report
• SHACC — SHAPE Airspace Coordination Centre
• ESERN — East-Southeastern
• CNDN — Canadian
• ATOMS — Air Traffic Operations Management System
• ARINC 748 — Communications Management Unit
• FIRE — Fire Station
• DR — Disaster Recovery
• EIF — Extended Interface Function
• HV — Transavia Airlines CV
• WHO — World Health Organisation

• APATSI — Airport / Air Traffic Systems Interface
• GFP — Government Furnished Property
• CSS — Central Site System
• MTTRP — Mean Time to repair product
• BYD — Beyond
• SSW — South-South-West
• ACL — Air Traffic Control Clearance
• GADO — General Aviation District Office
• PAAST — Pan American Aviation Safety Team
• RCH — Reach
• AEV — Annual Equivalent Value
• ATDS — Airborne Tactical Data Systems (USN)
• RDPS — Radar Data Processing System
• IMPR — Improve
• EFDP — European flight data processing(Eurocontrol)
• CNSP — Consolidated NOTAM System Processor
• COT — At the Coast
• FSK — Frequency Shift Keying
• FDFMG — Flight Data and Flow Management Group
• SPAS — Safety Performance Analysis System
• ULR — Ultra Long Range
• CEI — Cabin Equipment Interfaces
• MIRACULIX — Multi Interface Radarformat Calculator and
• FLIDRAS — Flight Data Replay and Analysis System
• DO — Diesel Oil
• ATCA — Air Traffic Control Association, Inc.
• ST&E — Security Test and Evaluations
• AWSS — Automated Weather Sensors System
• ANM — ATFM Notification Message
• TWT — Travelling Wave Tube
• SSFDR — Solid-State Flight Data Recorder
• RCLS — Runway Centerline Lighting System
• FDC — Flight Data Company
• SFPL — System Flight Plan Processing
• SNDCF — Subnetwork Dependent Convergence Facility
• PASTUS — Past Us
• STCA — Short Term Conflict Alert
• FHINC — Fridays/Holidays Included
• CUF — Cumuliform
• CEAS — Class E Airspace
• ARINC 744 — Full Format Printer
• CRM — Crew Research Management
• ATFMU — Air Traffic Flow Management Unit
• TROP — Tropopause
• ARINC 415 — Operation/Technical Guidelines On Failure Warning and Functional Test
• BASE AMD — Base Arrival Manager Display
• OT&E — Operational Test and Evaluation
• ARINC 757 — Cockpit Voice Recorder
• FPA — Flight Path Angle
• NDI — Nondestructive Inspection

• HI FI SIM — High-Fidelity Simulator
• SNPL — Syndicat National des Pilotes de Ligne
• AVSI — Aerospace Vehicle Systems Institute
• AFMT — Airway Facilities Management Team
• CBM — Cubic Metres
• MTA — Military Training Area
• CEATS — Central European Air Traffic Services
• A/H — Altitude/Height
• VSO — Stalling Speed in the Landing Configuration
• ILO — International Labour Organisation
• RCL — Runway Centreline Lighting
• FEW — Few
• CPL — Customer Priority Listing
• ADVCTN — Advection
• BA — Budget Analyst
• ARAG — Amsterdam Rotterdam Antwerp Gent Range
• SSO — STAR Support Office
• WMSCR — Weather Message Switching Center Replacement
• DFTI — Distance-from-Touchdown Indicator
• FD — Free Discharge
• OMEGA — Very Low Radio Navigation System
• DRFT — Drift
• ADL — Aeronautical Data-Link
• CFIT — Controlled Flight into Terrain
• DCD — Double Channel Duplex
• ASN — Advance Shipment Notice
• APMS — Automated Performance Measurement System
• AIM — Aeronautical Information Management
• LCTD — Located
• ECPIC — Electronic Capital Planning Investment Control
• FO — For Orders
• NADIN — National Airspace Data Interchange Network
• II — Interrogator Identity
• AOA — Airport Operations Area
• AAOSA — Always Afloat or Safe Aground
• ALPA-FYROM — Air Line Pilots Association of The Former Yugoslav Republic of Macedonia
• FGS/C — Flight Guidance System/Computer
• CGL — Circling Guidance Lights
• FIX — position in space usually on aircraft’s flight plan
• ODS — Operational Data Store (knowledge management)
• ETC — Estimated Time of Completion
• HS-DTS — High Speed Data Transmission System
• FAL — Final Assembly Line
• AES — Airborne Earth Station
• MTBR — Mean Time Between Replacement
• CPCS — Cabin Pressure Control System
• ACAMS — Aircraft Condition Analysis and Management System
• MTOW — Maximum Take-off Weight
• AT&T CSA — At&t Customer Support Associate
• TAU — Range / Range rate

• VMAX — Basic Clean Aircraft Maximum CAS
• CRMCS — Central RADNET Monitoring and Control System
• TO NL — Takeoff Engine Fan Speed
• XPD — ATC Transponder
• FPF — Flight Plan Fallback
• COMCO — Command Communications Outlet
• ACM — Acceptable Means of Compliance
• DOM — Domestic
• MET — Meteorological
• NSE — Navigation System Error
• EXPLT — Extrapolate
• NAWAU — National Aviation Weather Advisory Unit
• ADREP — Aircraft Accident/Incident Data Reporting System
• FSF — Flight Safety Foundation
• RSYD — Release Subject to Your Discretion
• SIC — Service Initiation Charge
• ALPAP — Air Line Pilots Association of the Philippines
• VSIG — Vertical Separation Implementation Group
• FRNG — Firing
• APB — APATSI Project Board
• 8.33 CP — 8.33 Contact Person
• CPL — Commercial Pilots License
• BM — Beam, Maximum
• AACO — Arab Air Carriers Organisation
• CAOFA — Co-ordination of Air Operations in the Forward Area
• DOI — Department Of Industry
• CTSKLS — Catskills
• SOPA — Standard Operating Procedure Amplified
• WPP — Working Position Processor
• OSA — Operational Safety Assessment
• GNSSP — Global Navigation Satellite System Panel
• LOF — Lloyds Open Form
• LIM — Limit
• ESCO — Executive Support and Coordination Office
• RIRT — Russian Institute of Radio Navigation and Time
• AFM — Aeroplane Flight Manual
• GEOREF — Geographical reference
• LCGS — Low Cost Ground Surveillance Radar
• RIMS — Runway Incursion Monitoring System
• JD TF — Job Description Task Force
• WRC — World Radio-communications Conferences
• FAN — False Alarm Normaliser
• AP — Airport Protection
• VU — Utility Speed
• REA — Ready Message
• GICB — Ground Initiated Comm B Protocol
• PZ — Portotroz
• SUP/ACC — Supervisor Area Control Centre
• SEMP — Software Engineering Management Plan
• ARFF — Aircraft Rescue and Fire Fighting

• AAFG — ATM Added Functionality Sub-Group
• VSTOL — Vertical or Short Takeoff and Landing
• FIAO — Flight Inspection Area Office
• AVI — Audio/Video Interleaved Format
• MASS — Maintenance Automation System Software
• RE — Resident Engineer
• EARS — En Route Analysis and Reporting System
• EXTD — Extend
• ACAS — Airborne Collision Avoidance System
• NATCO — National Communications Switching Center
• MT — Mertic Tonne
• VTN — Voice Telecommunications Network
• AFRAA — African Airlines Association
• ESDI — Enhanced Small-Device Interface
• LIH — Light Intensity High
• FRS — Functional Requirements Specifications
• UAP — User Application Profile
• MRVA — Minimum Radar Vector Altitude
• D&D — Distress and Diversion
• UAT — Universal Access Transceiver
• ATIS — Automatic Terminal Information Service
• WTC — Wake Turbulence Category
• SMT — station management (protocol)
• VRRS — Voice Recording and Display System
• STANAG — (NATO) Standardisation Agreement
• ACAS — Aircraft Collision Avoidance System
• CLKWS — Clockwise
• MTOM — Maximum Take-Off Mass
• AP — Airport Plaza
• CAR — Caribbean Region
• NAAQS — National Ambient Air Quality Standards (US)
• ARINC 750 — VHF Data Radio
• EB — Eastbound
• AASR — Aging Aircraft Safety Rule
• TWN — Tactical Weather Network
• SS — Sunset
• WOCL — Window of Circadian Low
• DFS — Detailed Functional Specification
• HBN — Hazard Beacon
• FIG — Flight Inspection Group
• ICAO — International Civil Aviation Organisation
• AVPAC — aviation VHF packet communications
• VASIS — Visual Approach Slope Indicator System
• BTC — Basic Training Course
• TLPD — Traffic Load Prediction Device
• WRNG — Warning
• MEA — Minimum Enroute Altitude
• VSA — By Visible reference to the ground
• ATSU — Air Traffic Services Unit
• ARN-1 (TABLE) — Basic ATS Route Network in the Lower and Upper Airspace

• USOAP — Universal Safety Oversight Audit Program
• RSI — Radiation Status Indicator
• SUC — Start-Up Controller
• NODE — NATS Operational Display Equipment
• ITWS — Integrated Terminal Weather System
• PREV — Previous
• MF — Middle Frequency
• NRH — No Reply Heard
• CRNA — Centre Régional de la Navigation Aérienne
• CASTLE — Consolidated Automated System for Time and Labor Entry
• INM — Integrated Noise Model
• WPN — First waypoint in the next sector
• EATCHIP OCD — Operational Concept Document
• OATS — Orbit and Attitude Tracking
• AFAST — Active Final Approach Spacing Tool
• WND — Wind
• RBC — Rotating Beam Ceilometer
• IFL — Intermediate Flight Level
• DADC — Digital Air Data Computer
• CAT X — Category x Precision Approach
• FFM — Free Flight Mode
• AND — Associate Administrator for NAS Development
• SVCBL — Serviceable
• AFS — Automatic Flight System
• CUPS — Consolidated Uniform Payroll System
• AOI — Area of Operational Interest; TERPS Office (USAF)
• B/C — Benefit/Cost
• CSMC — Cyber Security Management Center
• DET — Detention
• CENRAP — Center Radar ARTS Presentation
• RLG — Ring Laser Giro
• PCGO — Part Cargo
• LYCN — Layday Cancelling Date
• AST — FAA Office of Commercial Space Transportation
• CDRL — Contracts Data Requirements List
• MODIS — moderate-resolution imaging spectrometer (NASA/GSFC)
• CAI — Contractor-Acceptance Inspection
• FALPA — Fiji Air Line Pilots Association
• ELNGT — Elongate
• TXWY — Taxy Way
• RCDSS — Radar Control and Display Subsystem
• ACRP — Airport Cooperative Research Program
• UAC — Upper Area Control
• KECU — Thousands of European Currency Units
• MTRAQ — Multi track quality
• ASPM — Aviation System Performance Metrics
• CFMU — Central Flow Management Unit
• SRMDM — Safety Risk Management Memo
• CDS — Controller Display Support
• MIDAS — Man-Machine Integration Design and Analysis System

• EBUS — Enhanced Backup Surveillance
• ACEP — Airport Capacity Enhancement Plan
• SHAPE — Supreme Headquarters Allied Powers Europe (NATO)
• FMU — Flow Management Unit
• SNPA — Subnetwork Point of Attachment
• EATMP — The European Air Traffic Management Programme
• SBT — Scenario-Based Training
• TITLE — Message Name
• TMSSG — Top Management Structure Sub-Group
• EOPF — Electronic Official Personnel File
• VREF — Approach Reference speed
• SSE — Servicing Security Element
• UTC — Universal Time Coordinate
• DABBS — DITCO Automated Bulletin Board System
• AWOS — Automated Weather Observing System
• DZ — Drizzle
• TWI — Terminal Weather Information
• BRL — Building Restriction Line
• FWDD — Fresh Water Departure Draft
• ACDMD — Air Collaborative Decision Making Demonstrator
• V/STOL — Vertical or Short Take-Off and Landing
• TKE — TrackAngle Error
• CCIF — Comit? Consultatif International Des Communications T?l?phoniques ? Grande Distance (French For International Telephone Consultative Committee
• FWCS — Flight Watch Control Station
• SUP/MIL — Supervisor military
• FDESP — Free Despatch
• QUIS — Questionnaire for User Interface Satisfaction
• CATSIM — CAA Air Traffic Simulator
• ANC — Alternate Network Connectivity
• LCL — Less Container Loaded
• FG — Fog Gun
• HEL — Helicopter
• EGT — Exhaust Gas Temperature
• FOFFER — Firm Offer
• FPPU — Flight Planning and Flight Progress Updating
• TCAS — Traffic Alert and Collision Avoidance System
• WSPD — Wind Speed
• URTF — User Requirements Task Force
• FPAP — Flight Path Alignment Point
• ADDA — Administrative Data
• LYR — Layer
• LAHSO — Land And Hold Short Operation
• COBLDN — Closing of Business London
• SUPSIS — Supervisor
• ARR — Arrive
• AITS — Automated Inventory Tracking System
• TRA — Thrust Reduction Altitude
• DEL — Delete
• NARG — Navigation Aids and Area Navigation Group
• EMARSSH — Europe, Middle East, Asia Route Structure of the Himalayas

• AUTOB — Automatic Weather Reporting System
• ARINC 591 — Quick Access Recorder For Aids System
• AAD — Assigned Altitude Deviation
• V2 — Takeoff Climb Velocity
• DBCRC — Defense Base Closure & Realignment Commission
• FDPS — Flight Data Processing System
• ERIDS — En Route Information Display System
• EVAS — EATMS Validation Strategy
• MAX CRZ — Maximum Engine Thrust for Two-Engine Cruise
• OCS — Oceanic Control System
• NRZI — Non Return to Zero Inverted magnetic tape bpi
• RBDPE — Radar Beacon Data Processing Equipment
• BTL — Between layers
• OSH — Open Shelter Deck
• AUTOCAD — Automatic Computer Aided Design
• W2 — World Airlines
• ADSIM — Airfield Delay Simulation Model
• AOC — Aircraft Operations Centre
• GDE — Ground Delay Enhancements
• ESRI — Environmental Systems Research Institute (developer of geographic information systems (GIS) software, Redlands, California)
• VOM — Volt-ohm-milliammeter
• ALF — Aloft
• VSD — Vision and Strategy Document
• RSA — Runway Safety Area
• DEBRIEF — Debriefing
• RBPM — Remote Beacon Performance Monitor
• 3D — Palair Macedonian
• ARINC 414 — General Guidance For Equipment And Installation Engineers
• NSAP — National Service Assurance Plan
• STWL — Stopway Lights
• TOPL — Take Off Performance Limits
• TB — Tellback
• IFPPS — Integrated Flight Plan Processing System
• HHMMSS — hour-hour / minute-minute / second-second
• OPADD — Operating Procedures for AIS Dynamic Data
• DFGS/C — Digital Flight Guidance System/Computer
• HURCN — Hurricane
• FPCP — Flight Path Control Point
• XCM — Crossing Request Cancelation Message
• EEI — Essential Elements of Information
• EPS — Engineered Performance Standards
• GIB — Global Navigation Satellite System Integrity Broadcast
• NEXRAD — Next Generation Weather Radar
• CESA — Class E Surface Area
• VOT — VOR airborne equipment test facility
• TSG — Training Sub-Group
• WXR — Weather Radar
• HELLANET — Hellenic aeronautical Network
• DMR — Data Modification Request
• RWY — Runway

• HUMS — Health and usage monitoring systems
• JPDO — Joint Planning and Development Office's
• PCB&T — Personnel Compensation Benefits and Travel
• ANSA — International Advisory Group Air Navigation Services
• FMS — Fathoms
• N1 — Gas generator speed
• AUX — Auxilliary
• BRITE — Bright Radar Indicator Tower Equipment
• ACPO — Aircraft Position Operator
• RDVS — Rapid Deployment Voice Switch
• UUP — Updated Use Plan
• RATCF — Radar Air Traffic Control Facility
• ACN — Airspace Co-ordination Notification
• PROB — probability
• GRD — Geared
• FONSI — Finding of no significant impact. See Environmental impact statement (US)
• IRCAS — Intranet Radio Coverage Analysis System
• DIRF — Direction Finding
• DRK — Derrick
• PA — Pan American Airways
• ZFW — Zero Fuel Weight
• SUR — Surveillance
• CSD — Constant Speed Drive
• X.25 — Packet Switched Data Network
• MMS — Maintenance Monitoring System
• STANLY — Statistics and Analysis
• P&H — Press and Hold
• VBX — Visual Basic Extensions
• TMRR — Temporary Minimum Disk Route
• SCAT-1 — Special Category 1
• TSP — HRS Training Sub-Programme
• VSSG — Vertical Separation Sub-Group
• ARO — Air Traffic Service Reporting Office
• NB — NorthBound
• AEE — FAA Office of Environment and Energy
• ARST — Arresting specify aircraft arresting
• FAR — Federation Aviation Regulations
• LFDS — Large Facility Demarcation System
• ENAV — En Route Navigational Aids
• DEI — Directorate EATCHIP Implementation
• FEATS — Future European Air Traffic System
• GEO — Geographic
• CSIS — Centralized Storm Information System
• VDC — Volts, Direct Current
• MOA — Memorandum of Understanding
• AFDS — Autopilot Flight Director System
• EXP — Expect
• ALSEC — All Sectors
• IFRB — International Frequency Registration Board of the International Telecommunication Union
• EHSI — Electronic Horizontal Situation Indicator

• TCT — Technical Control Terminal
• STU — Selected Trajectory Update
• ATCRU — Air Traffic Control Radar Unit
• SEL — Single Event Level
• CFL — Cleared Flight Level
• AIRMET — Airmen's Meteorological Information
• DASI — Digital Altimeter Setting Indicator
• GRAF — Ground Replay and Analysis Facility
• ATTIS — AT&T Information Systems
• ACFS — Advanced Concepts Flight Simulator
• MDT — Maintenance Data Terminal
• SDIS — Switched Digital Integrated Service
• ALSF — Approach Lighting System With Sequenced Flashing Lights
• ASTA — Airport Surface Traffic Automation
• FPA — Focal Plane Array
• HDG SEL — Heading Select
• XASP — Extended AIRCOM Service Processor
• TODAH — Take Off distance available, helicopter
• ITU WARC-95 — International Telecommunication Union World Radio Conference
• VS — Vocational Stabilisation
• TATCI — Tallinn ATC Improvement project
• CMSA — Carrier Sense Multiple Access
• AAH — Autonomous Aircraft Hybrid
• ATCO — Air Traffic Control Officer
• AS — Airspeed
• ADAP — Airport Development Aid Program
• AIDS TO NAVIGATION — Artificial objects to supplement natural landmarks indicating safe and unsafe waters
• F/G — Foreground
• WX DEF — Weather Deviation
• EFL — Entry Flight Level
• U — Upward
• TDA — Track Detection Analysis
• ADI — Automatic De-Ice and Inhibitor
• ASAS — Aviation Safety Analysis System
• ALD — Airlift Division
• TOGA — Takeoff/Go-Around
• SURVITE — Surveillance Integrated Tested for EATMS
• ATAS — Airspace and Traffic Advisory Service
• TTP — TCAS II Transition Program
• DATAC — Digital Autonomous Terminal Access Communication
• CNS — Communication, Navigation and Surveillance Systems, Inc.
• C-ATSU — Current Air Traffic Services Unit
• CLB — Climb Detent of the Thrust Levers
• ADO — IFALPA Aircraft Design & Operation Committee
• OAG — Official Airline Guide
• COSP — Connection-Oriented Session Protocol
• DPNG — Deepening
• ISASI — International Society of Air Safety Investigators
• MCSG — Military Committee Staff Group
• EATMS — European Air Traffic Management System

• FEU — Forty-Foot Equivalent Unit
• IAM — Institute of Aviation Medicine
• MUDPIE — Multiple User Data Processing Interactive Environment
• DPA — Distinguishing Path Attribute
• FILTIM — Date and Time Stamp of original Message
• CPF — Central Processing Facility
• FIXM — Flight Information Exchange Model
• ARINC 594 — Ground Proximity Warning System
• NR. — Number
• WSFO — Weather Service Forecast Office
• FPFS — First Planned First Served
• TWYL — Taxiway Lights
• CAIRS — Cable Assignment Information Retrieval System
• SSR — Solid State Relay
• ANGB — Air National Guard Base
• TMCU — Tower Main CWP Unit
• AAATS — Australian Advanced Air Traffic Services
• SVP — Supervisor
• LDB — Limited Data Block
• FPPS — Flight Plan Processing System
• A/G — Air/Ground
• ERR — Error message
• ADTN2000 — Administrative Data Transmission Network 2000
• RCIU — Remote Control Interface Unit
• FEIS — Final Environmental impact statement (US)
• AJT — Terminal Service, Air Traffic Organization
• CAEG — Computer-aided Engineering Graphics
• ACC-PC — ACC Planning Controller
• FMA — Flight Mode Annunciator
• MTAC — Multiple Time Around Clutter
• CRE — Class Rating Examiner
• SCC — Satellite Control Centre
• CTOL — Conventional Takeoff & Landing
• SUP. PRACT. — Supervised Practices
• LCN — Local Communications Network
• SITA — Société Internationale Télécommunique Aéronautique
• VPAE — Vertical Profile Angle Error
• SNET — Safety Nets
• ARSC — Air Rescue Sub Centre
• ACC-TC — ACC Tactical Controller
• IFPZ — Integrated Initial Flight Plan Processing System Zone
• ADS-B — Automatic Dependent Surveillance-Broadcast
• EGNOSS — European Geostationary Navigation System Overlay
• ARINC 7411P2 — Aviation Satellite Communication System: Part 2 - Satellite Design
• CEAC — Committee of European Airspace Co-ordination
• HERAS — Hellenic Radar System
• ARINC 569 — Airborne Distance Measuring Equipment
• RPG — Radar Processing Group
• TWDL — Two-Way DataLink
• IFE — In-Flight Emergency

• RMNDR — Reminder
• FMG — Frequency Management Group
• CEW — Civil Engineering Works
• ARTCC — Air Route Traffic Control Centre
• PAMS — Published AIP Management Systerm
• EVS — Enhanced Visual System
• MTCD — Medium Term Conflict Detection
• BRKHIC — Breaks in Higher Overcast
• ADS-P — Automatic Dependent Surveillance-Panel
• ACO — Airspace Co-ordination Order
• DISU — Drug Investigation Support Unit
• LORAN — Long Range Navigational System
• IFFN — Identification Friend, Foe or Neutral
• FDE — Flight Data Exchange
• HF — Human Factors
• EXY — Easyjet
• TCPU — Touch Panel Central Processing Unit
• IPS'S — Intellectual Proprietary Rights
• V/M — Volts-per-meter
• XCOP — Exit Co-ordination Point
• SEU — Software Engineering Unit
• SANE — Skill Acquisition Network
• CAPSIN — CAA Packet Switched Integrated Network
• CAAC — Civil Aviation Administration of China
• ACP — Accept Message
• VFXR(R) — Flap Retraction Speed
• FDR — Federal Data Registry
• C/A CODE — Course / Acquisition Code
• ATPL — Air Transport Pilot Licence
• IVSR — Interim Voice Switch Replacement Program
• EC — East Coast
• CIDIN — Common ICAO Data Interchange Network
• WSC — West Sector Co-ordinator
• XCOR — Cancel Correlation
• FISO — Flight Information Service Officer
• XIN — Military Crossing Intention Notification Message
• SDS — Switched Data Service
• LS — Lumpsum Freight
• RESMA — Requirements for Emergency and Safety Airborne Equipment
• GM — guidance material
• ABET — Airspace Behavioural Engineering Technology
• CR — Course to a VOR Radial
• ATMAS — Air Traffic Management Automated System
• PND — Primary Navigation Display (aviation)
• VWF — Video For Windows
• APPR — Approach
• AAC — Mike Monroney Aeronautical Center
• FDE-ICD — Flight Data Entry - Interface Control Document
• VA — Heading to an Altitude
• XMET — Cancel METAR

• DRCP — Data Reduction Computer Program
• FLAS — Flight Level Allocation System
• AISG — AIS Automation Group
• EUR — Region European Region
• IFLIPS — Integrated Flight Prediction System
• API — FAA Office of International Aviation
• ANT — Air Navigation Team
• TWR — Tower Control Unit
• DEPA — Departure Airfield
• RBP — Radar Bypass Processor
• IRVR — Instrument Runway Visual Range
• FEAST — First European ATCO Selection Test Package
• JAL — Japan Air Lines
• PDRP — Problem Detection and Resolution
• ALO — Air Force Liaison Officer
• CASI — CFMU Aircraft Situation Image
• AIR 4653 — Aerospace Information Report 4653
• ACIPLA — Asociacian Civil de Pilotos de Lineas Aereas
• 1 :M — One-to-Many relationship
• MMEL — Master Minimum Equipment List
• AFSFO — AFS Field Office
• CAST — Certification Authority Software Team
• EX GDR — ex German Democratic Republic
• A/N — Arrival Notice
• RMA — RELIABILITY MAINTAINABILITY AVAILABILITY
• LO — Low
• U/L — Upper / Lower
• TARMAC — Taxi and Ramp Management and Control
• IGP — Ionospheric Grid Points
• XCD — Exceptional Conditions
• CAMA — Civil Aviation Medical Association
• NIMS — NAS Infrastructure Management System
• ATCCC — Air Traffic Control Command Center
• ATN — Aeronautical Telecommunications Network
• SICTA — Italian Consortium for the Applied ATM Research
• FO — First Officer
• FIP — Facility Improvement Program
• IARR — IFPS ARR Message – Individual Arrival Message
• TTW — Time To Waypoing
• CL — Cost Index
• ARNG — Arrange
• AACE — Airfield Approach Control Element
• TDCP — Test Display and Control Panel
• IMAL — Integrity Monitoring Alarm Limit
• SIE — Standard Interface Equipment
• NTRY — Entry
• IAFP — Individual ATC Flight Plan Proposal
• EIU — Electronic Interface Unit
• DPDG — Diplomatic and Protocol Drafting Group
• QRA — Who Are You

• DEE — Data Entry Equipment
• PC — Period of Charter
• CMU — Communications Management Unit
• CUST — Customs
• AIREP — Air-Report
• AWTA — Advise at What Time Table
• VCY — Vicinity
• ADUG — Airport Database User Group
• GTPAPC — Grupo Tecnico de Pilotos Aviadores Profesionales de Cuba
• AEEC — Airlines Electronic Engineering Committee (ARINC)
• HELI — Heliport
• SA — System Administrator
• DOTCC — Department of Transportation Computer Center
• CMFO — Certificate Management Field Office
• TBS — Telephone Back-up System
• ABOVE DECK — On the deck
• IACS — INTERGRAPH Aeronautical Charting System
• RNLAF — Royal Netherlands Air Force (also KLu)
• LRCO — Limited Remote Communications Outlet
• SSGT — Surveillance Sub-Group on Tools
• X25 — Standard protocol in telecommunications
• FSTS — Federal Secure Telephone Service
• FDMAS — Flight Data Management Automated System
• FPD — Flight Plan Database
• VSP — Variable System Parameter
• DYSIM — Dynamic Simulator
• PZ 90 — Parameters of Earth 1990
• EVFR — Electronic Visual Flight Rules
• TSIKADA — Russian four-satellite civil navigation system.
• NATCON — North Atlantic Concept
• AATF — Airworthiness Assurance Task Force
• OTFO — Operations Technical Field Office
• ESYS — En Route Equipment Systems
• FREER — Free Route Experimental Encounter Resolution
• SCAT-1 APPROACH — Special Category 1 Approach
• AAC — Aeronautical Administration Communication
• ELR — Extra Long Range
• ATREP — Air Traffic Representative
• DOD MIL — Department of Defence - military
• KB — Kilo Bytes (1,000 Bytes)
• ESDF — Environmental Static Data Processing and Distribution Function
• VPIP — Vertical Intercept Point
• AFM — Affirmative Fair Housing Marketing
• NPM — NAS Program Manager/Management
• ATFMS — Air Traffic Flow Management System
• IMO — International Maritime Organisation (UN)
• ACOD — Area Conflict Detection
• ACCC — Australian Competition Consumer Commission
• VFE — Flaps Extended Placard Speed
• ARINC 569 — Heading and Altitude Sensor

• CALS — Computer-aided Acquisition and Logistic Support
• AEROSAT — Aeronautical Satellite Council
• CAR — Civil Aviation Regulations
• OTFP — Operational Traffic Flow Planning (aviation)
• NATMC — NATO Air Traffic Management Committee
• MNPSA — Minimum Navigation Performance Specification Airspace
• TWG — Training Working Group
• TCA — Terminal Conflict Alert
• AFFREIGHTMENT — The hiring of a ship in whole or part
• EPAC — Eurocontrol Programme Appraisal Committee
• AOF — Allocation of Functions
• FDSU — Flight Data Storage Unit
• ACTF — Aeronautical Charting Task Force
• MTW — Mountain Waves
• AIRNET — Airport Network Simulation Model
• GENOFIC — General North Sea Flight Information Centre
• ASCII — American Standard Code for Interface and Interchange
• IІSLS — Improved Interrogation Side Lobe Suppression
• ERV — ECM Resistant Voice
• PIAC — Peak Instantaneous Aircraft Count
• REAL — Real time
• D — Danger Area
• CTAM — Climb to and Maintain
• SFAR-38 — Special Federal Aviation Regulation 38
• AFIS — Aerodrome Flight Information Service
• SNIR — Signal-to-noise ratio
• WAAS — Wide Area Augmentation System
• ARINC 741P4 — Aviation Satellite Communications System:Part 4 - Specification and Description Language
• CARAT — Center for Aviation Research and Aerospace Technology
• TEMPO — Temporary
• ACH — Air traffic control Flight Plan Change
• DEMETER — Distance Measuring Equipment Tracer
• RGS — Remote Ground Station
• SSAP SELECTOR — Session Service Selector
• EPB — EATCHIP Project Board
• SSRBRIGH — Highlight set code to target
• APM — Accident Prevention Manual
• HX — No Specific working hours
• 4D — Four-Dimensional
• TTC — Telemetry and Telecommand Centre
• IFPS — Integrated Initial Flight Plan Processing System
• AFL — Assigned Flight Level
• DOD — Department of Defence
• AFDSS — Air Fix Data Sub Set
• DOI — United States Department of Interior
• MDA/H — Minimum Descent Altitude/Height
• APM — approach path monitor
• AOCP — Airborne Operational Computer Programme
• TMZ — Transponder Mandatory Zones
• CMIP — Contract Management and Inspection Procedures

• NBCAP — National Beacon Code Allocation Plan
• TCWP — Threshold Crossing Way-point
• SSRC — Current SSR Code
• ETG — Enhanced Target Generator
• AEX — Automated Execution
• NIST — National Institute of Standards and Technologies
• EARTS — En Route Automated Radar Tracking System
• MAX CLB — Maximum Engine Thrust for Two-Engine Climb
• RAPNET — Regional Aeronautical Packet
• ACH — ATC Flight Plan Change
• IFPA — Instrument Flight Procedures Automation Program
• CDU — Control and Display Unit
• VNO — Maximum structural cruising speed
• MALPA — Mauritius Air Line Pilots Association
• FSCAP — Flight Safety Critical Aircraft Parts
• AEDT — Aviation Environmental Design Tool
• TCB — Training Co-ordination Board
• AOC — Aircraft Operating Company
• CRAM — Conditional Route Availability Message
• CYG — Cyclonic
• FRH — Fly Runway Heading
• PAD — Packet Assembler Disassembler
• LNAV — Lateral Navigation
• LCG — Load Classification Group
• YSAS — Yaw Stability Augmentation System
• LRR — Long Range Radar or Low Cost Radar
• NFIS — NAS Facilities Information System
• ARINC 528 — Airborne Tape Recorder
• ALCC — Airlift Central Co-ordination Centre
• HELIOPS — Helicopter Operations Panel
• FMIS — FTS2000 Management Information System
• SOL — Sector Outbound List
• FDPD — Flight Data Processing and Distribution
• TOS — Traffic Orientation Scheme
• EATCHIP LO — EATCHIP Liaison Officer
• DEV — Deviation
• GF — Gulf Air Company - Bahrain
• SAFI — Semi-Automatic Flight Inspection
• TMA-TC — TMA Tactical Controller
• PRQ — Pilot Request
• HFSG — Human Factors Study Group
• EUROCAE — European Organisation for Civil Aviation Equipment
• SVFR — Special VFR
• SASS-C — Surveillance Analysis Support System - Centre
• RAPNET — Regional ATC Packet switched Network
• CMT — Critical Milestone Test
• AIRCOM — Aircraft Communications
• RMCDE — Radar Message Conversion and Distribution Equipment
• FCT — Friction Coefficient
• CDFA — Constant Descent Final Approach

• CTU — Cabin Telecommunications Unit
• FLOWSIM — Traffic Flow Planning Simulation
• ANPAC — Associazione Nazionale Piloti Aviazione Commerciale
• U/S — Unservicealble
• CRI — Class Rating Instructor
• DISCH — Discharge
• BUNKERS — Name given for vessels Fuel and Diesel Oil supplies
• LECT — Lecture
• EWA — Error Warning Area
• ARINC 595 — Barometric Altitude Rate Computer
• ASRS — Aviation Safety Reporting System
• ARS — Aeronautical Radio Navigation Service
• COCESNA — Central American Corporation For Air Navigation Service
• CDPS — Central Data Processing System
• AACC — Airport Associations Co-ordinating Council
• EGALPA — Egyptian Air Line Pilots Association
• GRADE — Graphical Airspace Design Environment
• DTG — Distance-to-go
• PJSA — Project Scope Agreement
• AAT — Associate Administrator for Air Traffic
• AOPG — Aerodrome Operations Group
• TUM — Time Update Message
• FLTCK — Flight Check
• FPLA — Flight Plan Application Section
• BAA — British Airport Authority
• EATF — EATMS Architecture Task Force
• HUM RES — Human Resources
• IPPC — Internet Pilot Planning Centre
• VAR — Variation Magnectic
• PER SE — By Itself
• IAIP — Integrated Aeronautical Information Package
• TARA — Terminal Area RNAV Applications Task Force
• SPAS — System Performance Analysis System
• ARSA — Airport Radar Serve Area
• AFZ — Resource Management
• CASS — Corporate Aviation Safety Seminar
• CRC — Control and Reporting Centre
• ANSO — Air Navigation Services Offices
• AENA — Spanish Airport and Air navigation Administration
• AAFCE — Allied Air Forces Central Europe
• AOPTF — Aerodrome Operations Task Force
• ABET — Airspace Behavioral Engineering Technology
• DOP — Daily Operations Plan
• TLX — Task Load Index
• AIM-FANS — Airbus Interoperable Modular FANS
• HKALPA — Hong Kong Air Line Pilots Association
• ALPA-A — Air Line Pilots Association of Armenia
• DAAIS — Danger Area Activity Information Service
• DUAT — Direct User Access Terminal
• RASP — Regional Airport System Plan

• SNICF — Subnetwork Independent Convergence Function
• IFFITAF — IFPS-DBE Functional Interface System Task-Force
• FAX — Facsimile Equipment
• 8.33 STATE — A State initially implementing 8.33 kHz channel spacing
• ALR — Alerting message
• FMGS — Flight Management Guidance System
• DSCS — Digital Satellite Compression Service
• LTOG — Long Term Objectives Groups
• SSALS — Simplified Short Approach Lighting Systerm
• RMPS — Radio Management Panels
• FRM — Financial Resources Management Core Team
• HWP — Holding Waypoint
• STS — Support to States
• FIC — Flight Information Centre
• ATIS-B — Automatic Terminal Information Service - Broadcast
• EGERIA — Engineering Group for European Integration ATC
• FAF — Final Approach Fixes
• IFATSEA — International Federation of Air Traffic Safety Electronic Associations
• CENTX — Central Telephone Exchange
• ARINC 404A — Air Transport Equipment Cases And Racking
• 4-MAST — 4-MAST group
• CEECS — Central and Eastern Europe Countries
• VTOL — Vertical Take-Off and Landing aircraft
• FISDL — Flight Information Services Data Link
• CESAR — Course Evaluation Sheets Analysis and Reporting
• CFD — Change to Flight Data Message
• CMPL — complete
• TTALPA — Trinidad & Tobago Airline Pilots' Association
• AOPG — Aerodrome Operations Planning Group
• TC-APD — Tactical Controller Activity Predictor Display
• IHST — International Helicopter Safety Team
• IGA — International General Aviation
• ADEP — Aerodrome of Departure
• ATCU — Air Traffic Control Unit
• EFF — Effective from
• GMU — GPS (Height) Monitoring Unit
• TNAV — Time Navigation
• RW — Runway
• ATCO — Air Traffic Controllers Organization
• SNME — Subnetwork Management Entity
• DAP — download of aircraft parameter
• ACR — Air Carrier
• AP — Airport Patrol
• COSYNUS — AIRBUS Training Database
• CASTA — Controller Associate for Strategic and Technical Advice
• CEFA — Co-operation for Environmentally Friendly Aviation
• AECG — ACAS Evaluation and Co-ordination Group
• A/L — Anti-ice
• ACSEP — Aircraft Certification Systems Evaluation Program
• IFATCA — International Federation of Air Traffic Controllers' Associations

• SESMA — Special Event Search and Master Analysis
• AFCNF — Air Force Central NOTAM Facility
• SFMC — Sickness Fund Management Committee
• STUD — Innovative studies
• ALCM — Air Launched Cruise Missile
• FI — Iceland Air
• JAI — Joint Acceptance Inspection
• CTAF — Common Traffic Advisory Frequency
• SOIWR — Simultaneous Operations on Intersecting Wet Runways
• TTF — Total Flights
• LDT — Logistic Delay Time
• AOWIR — Aircraft Operator What-If Re-routing
• ACR — Atlantic Co-ordinated Route
• ANPP — Air Navigation Plan Publication
• ATCC — Air Traffic Control Centre
• SBSR — Space Based Secondary Radar
• AOCI — Airport Operators Council International
• EACG — European ATFM Consultation Group
• GPWS — Ground Proximity Warning System
• NARACS — National Radio Communications System
• DSB — Double Side Band
• OHP — Over Head Projector
• CWS — Collision Warning System
• RNC — Required Navigation Capability
• CAMI — Civil Aeromedical Institute
• SFPL — Short Flight Plan
• ESE — East-South-East
• CFWP — Central Flow Weather Processor
• ALTN — Alternate
• GGCS — Ground/Ground Communication System
• RWP — Real-Time Weather Processor
• AFMS — Automatic Flight Management System
• CMSND — Commisissioned
• BARTCC — Berlin Air Route Traffic Control Centre
• ACRPWG — Aircraft Crash Recovery Procedures Working Group
• AFP — Area Forecast Panel
• FERS — Facility and Equipment Reporting System
• CIMO — Committee for Instruments and Methods of Observation
• AEGIS — Airborne Early Warning Ground Environment Integrated Segment
• MAA — maximum authorized IFR altitude
• CFII — Certified Flight Instructor Instrument
• TCDP — Technical Control Data Processor
• CAAF — Civil Aviation Authority of Fiji
• WXMS — Weather Mapping System
• CAMI — Civil Aerospace Medical Institute
• AACI — Airports Association Council International
• OWN — TCAS II equipped aircraft - source of TCAS event
• FPM — Flight Path Monitor
• AFIS — Automated Flight Inspection System
• RTQC — Real Time Quality Control

• NAT SPG — North Atlantic Systems Planning Group
• INBD — Inbound
• APANPIRG — Asia/Pacific Air Navigation Planning and Implementation Regional Group
• VDEV — Vertical Deviation
• IPDS — Instrument Procedure Development System
• ARAC — Aviation Rulemaking Advisory Committee (FAA)
• ARINC 566 — Airborne VHF Communications Transceiver And Mark 1 VHF SATCOM System
• DVOR — Doppler Very High Frequency Omni Directional Range
• AEG-TFK — AEG-Telefunken
• ATFR — Air Traffic Flow Regulator
• AAMS — Aircraft Arrival Management System
• NL — Engine Revolutions per Minute
• AWIS — Airport Weather Information
• AWX — All Weather Fighter
• FIFO — Flight Inspection Field Office(s)
• RCD — DCL Request Message
• SSGS — Surveillance Sub-Group on Standards
• JSS — Joint Surveillance System
• WINDMG — Wind Magnitude
• RNPTF — Required Navigation Performance Task Force
• MMPI — Minnesota Multiphase Personality Inventory
• NPO — Scientific Production Organisation
• SUDP — Surveillance data Processing
• RTSIM — Real-Time Simulation
• LISREL — Linear Structural Relations
• MLD — Military Liaison Division
• DAC — Dynamic Air Traffic Control Test
• SETA — Systems Engineering and Technical Assistance
• EDDA — Environmental Due Diligence Audit
• DESC — Descending
• OE/AAA — Obstruction Evaluation/Airport Airspace Analysis
• DADS — Digital Aeronautical Database System
• ACYC — Anticyclonic
• LMM — Compass locator at the middle marker
• AEM — Airports & Environment Management
• ATI — Automatic Tracking Initiation
• NAVAID — Navigational Aid
• AFG — Advisory Financial Group
• DAC — Direction Aviation Civile
• VHRR — Very High-Resolution Radiometer
• EADTF — European AIS Database Task Force
• DARC — Direct Access Radar Channel
• JU — JAT – Yugoslavian Airlines
• EPMB — EASIE Programme Management Board
• WINDR — Wind Direction
• FME — Force Majeure Excepted
• HIPERLAN — High Performance Local Area Network
• CDA — Continuous Descent Arrival
• ATCEUC — Air Traffic Controllers European Unions Coordination
• SECRA — Secondary Radar Data Only

• DNTKFX — DownTrack Fix
• ISMLS — Interim Standard Microwave Landing System
• MEB — Main Earthing Bar
• JSSI — Joint Safety Strategy Initiative
• FO — Flight Object
• NVFR — VFR by night
• MLDT — Mean Logistic Down Time
• CAASA — Commercial Aviation Association of Southern Africa
• FIS-B — Flight Information Service - Broadcast
• CMG — Crisis Management Group
• ATIS — Aerodrome Terminal Information Service
• ECAC AREA — European Civil Aviation Conference Area
• HATR — Hazardous Air Traffic Report
• AASC — Airport Authorities Steering Committee
• IKBS — Intelligent Knowledge Based System
• 4D-NAV — 4D Navigation
• FAPM — FTS2000 Associate Program Manager
• COCOS — Computer Controlled SSR Code Assignment
• AOCU — aircraft operator control unit
• ATSS — Airway Transportation Systems Specialist
• GAAA — General Aviation Activity and Avionics
• JSP — Joint Services Publication
• CMIC — Civil-Military Interface Standing Committee
• PMA — Parts Manufacturer Approval
• EMPS — En Route Maintenance Processor System
• CGAS — Coast Guard Air Station
• EFC — Expected Further Clearance
• DIR/INTC — Direct Intercept
• PATWAS — Pilot's Automatic Telephone Weather Answering Service
• PATS — Precision Approach Tracking System
• ACLT — Actual Landing Time Calculated
• TDSP — Training Documentations and Special Projects
• AFAS — Aircraft in the Future ATM System
• MECU — Millons of ECU
• ATTCS — Automatic Takeoff Thrust Control Systems
• A&F — IFALPA Administration & Finance Committee
• LFP — Low Pass Filter
• AMSS — Aeronautical Mobile Satellite System
• ARINC 307 — Aircraft Integrated Data System Wire Bundle Provisions
• FSF IAS — Flight Safety Foundation International Aviation Safety
• AITSC — Administrative IT Steering Committee
• GERT — German NEAN Project Team
• ARINC 741P1 — Aviation Satellite Communication System:Part I- Aircraft Installation Provisions
• FFAC — From Facility
• CRCO — Central Route Charges Office
• ANT — Airspace and Navigation Team
• TDO — Tornado
• AORTF — ATM Added Functionality Operational Requirements Task Force
• CFEP — Communications Front End Processor
• AFC — Air Traffic Control Frequency Change

• AUW — All Up Weight
• IGCN — Independent Ground Communications Network
• ALPA-E — Air Line Pilots Association of Ethiopia
• GLSU — GPS Landing System Unit
• SUP/APP — Supervisor Approach
• BAPA — Bangladesh Airline Pilots Association
• CATCO — Chief ATC Operations
• AO — Airlines Operator
• NOF — NOTAM Office
• ICMS — Integrated Control and Monitor System
• ADS-R — Automatic Dependent Surveillance-Report
• PANS-OPS — Procedures for Air Navigational Services - Aircraft Operations
• A/G — Air-Ground
• QDM — Magnetic zero wind heading
• EPCU — Electrical Power Control Unit
• FPM — Flight Progress Message
• FLCH — Flight Level Change
• ATNP — Aeronautical Telecommunications Network Panel
• AFT — At or towards the stern or rear of a ship
• FC — Course from a Fix to a Distance
• STA — Scheduled Time of Arrival
• HIRL — High Intensity Runway Lights
• MIO — Manufacturing Inspection Office
• EATN — Experimental Aeronautical Telecommunication Network
• AERA — Automated En Route Air
• ELS — Emergency Landing Strip
• MBR — Mittel-Bereich radar
• CED — Categorical Exclusion Determination
• SHANDAP — Shannon Data Processing
• DDB — Dynamic Database Browser
• FAST — Final Approach Spacing Tool
• ARR — Arrival
• TATCA — Terminal ATC Automation
• AOU — Aircraft Operator Unit
• ETVCT — En Route Training Voice Communication Tool
• AW/P — Active Way Point
• INTERPOL — International Criminal Police Organisation