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Governmental & Military >> Aviation Abbreviations

Look through 4999 acronyms and abbreviations related to Aviation:

• ACAS — Aircraft Collision Avoidance System
• DEP PROC — Departure Procedure
• AVSEC — Aviation Security
• DCE — Data Circuit-terminating Equipment
• XMIT — Transmit
• DWAT — Deadweight
• LTHH — Liner Terms Hook/Hook (shipping)
• FLSA — Fair Labor Standards Act
• XBAR — Crossbar
• ACCUM — Accumulate
• LAN — Local Area Network
• ETA — Estimated Time of Arrival
• IFPRU — IFPS Responsible Unit
• IQ — Intelligence Quotient
• GTEE — Guarantee
• ANOVA — Analysis of Variance (statistics)
• MIN/MAX — Minimum/Maximum
• ADVON — Advanced Echelon
• CDC — Computer Display Channel
• ABT — About
• XCVR — Transceiver
• JP — Japan
• ARINC 604 — Guidance For Design And Use Of built-In Test Equipment
• MLS — Microwave Landing System
• ACFT — Aircraft
• NBFR — Not Before
• DODAR — Diagnosis, Options, Decision, Assessment and Revision
• FTP — File Transfer Protocol
• ROM — Read-Only Memory
• DLOSP — Dropping Last Outwards Sea Pilot
• AHRS — Attitude Heading Reference System
• RAIL — Runway Alignment Indicator Lights
• MAN — Metropolitan Area Network
• LASER — Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
• NTSB — US National Transportation Safety Board
• NOTAMR — Notam Replacing another Notam
• DDU — Delivery Duty Unpaid
• IT — Information Technology
• OPS — Operations
• CPU — Central Processing Unit
• ANSI — American National Standards Institute, Inc.
• EGATS — Eurocontrol Guild of Air Traffic Services
• WWW — World Wide Web
• A — Ampere
• BVR — Beyond Visual Range
• ICD — Interface Control Document
• RF — Radio Frequency
• ERDF — European Regional Development Fund
• CUG — Closed User Group
• EMARSSH — Europe, Middle East, Asia Route Structure of the Himalayas

• OEM — Original Equipment Manufacturer (usually in reference to car parts)
• LOV — List Of Values
• MSG — Message
• ADC — Air Data Computer
• SMEQ — Subjective Mental Effort Questionnaire
• QC — Quality Control
• SAR — Search And Rescue
• FD — Flight Director
• CAP — Civil Air Patrol
• ASM — Available Seat Mile
• ESA — European Space Agency
• AAL — Above Aerodrome Level
• IP — Internet Protocol
• FLT — Full Liner Terms
• EDI — Electronic Data Interchange
• RNG — Range
• AOG — Aircraft On Ground
• T-VASIS T — Visual Approach Slope Indicator System
• B-RNAV — Basic Area Navigation
• FYI — For Your Information
• EEO — Equal Employment Opportunity
• ACMS — Aircraft Condition Monitoring System
• LRU — Line Replaceable Unit
• RVR — Runway Visual Range
• MOA — Memorandum Of Agreement
• PPE — Personal Protective Equipment
• COBT — Calculated Off Block Time
• MOLCHOPT — More or Less Charterers Option
• EAS — Equivalent Airspeed
• IRR — Internal Rate of Return
• WAC — World Aeronautical Chart
• FAR — Federal Aviation Regulation
• CV — Curriculum Vitae
• FTE — Full Time Equivalent
• S — South
• IWL — Institute Warranty Limits
• 2H — Second Half
• SMTP — Simple Mail Transfer Protocol
• A-VDGS — Advanced-Visual Docking Guidance System
• APU — Auxiliary Power Unit
• PDA — Personal Digital Assistant
• ATA — Area Transportation Authority
• ARINC 422 — Guidance For Modification Status Indicators & Avionics Service Bulletins
• A-VASIS — Advanced Visual Approach Slope Indicator System
• CRM — Crew Resource Management
• GIS — Geographic Information System
• DOT — Department of Transport
• AFCS — Automatic Flight Control System
• A SMGCS — Advanced Surface Movement Guidance and Control Systems
• EXW — Ex Works

• ACD — Automatic Call Distributor
• GNP — gross national product (economics)
• BTWN — Between
• IRL — Republic Of Ireland
• MOU — Memorandum of Understanding (an MOU between Food & Drug Administratin and a regulatory agency in another country allows mutual recognition of inspections)
• VAT — Value Added Tax
• TTG — Time-To-Go
• AGL — Above Ground Level
• LSD — Lashed Secured Dunnaged
• R&D — Research & Development
• CEP — Circular Error Probable
• EMP — Electromagnetic Pulse
• DME — Distance Measuring Equipment
• WAN — Wide Area Network
• ICAO — International Civil Aviation Organization
• I AND Q CHANNELS — In-phase and Quadrature channels
• RESA — Runway End Safety Area
• SOP — Standard Operational Procedure
• SAN — Storage Area Network
• X-WIND — Cross Wind
• DEC — December
• LNG — Liquefied Natural Gas
• ETS — Estimated Time of Sailing
• PDF — Portable Document Format (created by Adobe Acrobat)
• XECM — Cancel Executive Controller Message
• KE — Kenya
• GSE — Ground Support Equipment
• CQD — Customary Quick Despatch
• W — Watt
• B/L — Bill of Lading
• X-BAND — The frequency range between 8000 and 12500 MHz
• USAF — United States Air Force
• ERP — Emergency Response Plan
• ADP — Automated Data Processing
• ASR — Airport Surveillance Radar
• RNP5 — Required Navigation Performance 5
• E — East
• AF — Air Force
• R B — Range and Bearing line
• GALPA — Ghanaian Air Line Pilots Association
• PCB — printed circuit board
• C102 (TSO) — Helicopter Radar Approach, Issued 04/02/84
• TCP — Transmission Control Protocol
• ATCRBS — Air Traffic Control Radar Beacon System
• D.O.T — Department of Transport
• A/D CONVERTER — Analogue-to Digital Converter
• D-GPS — Differential Global Positioning System
• FAA — Federal Aviation Administration
• CHOPT — Charterers Option
• Q.23 — Signalling system for PABX

• ALT — Alternate
• AGW — All Going Well
• CIO — Chief Information Officer
• CPT — Carriage Paid To
• CDL — Configuration Deviation List
• DEC — Digital Equipment Corporation
• ARPA — Advanced Research Projects Agency (made early internet)
• CU — Control Unit
• CTR — Center
• EASA — European Aviation Safety Agency
• TTL — Transistor-Transistor Logic
• VHF — Very High Frequency
• KG — Kilogram
• CM — Centimeter
• CN — Change Notice
• MAA — Maximum Authorized Altitude
• FOB — Free On Board
• IDP — Individual Development Plan
• I/O — Input/Output
• APAPI — Abbreviated Precision Approach Path Indicator
• MSA — Minimum Safe Altitude
• MIL — Military
• IM — Information Management
• PAQ — Position Analysis Questionnaire
• EBCDIC — Extended Binary Coded Decimal Interchange Code (pronounced Eb-see-dik) (cf. BCD)
• MTBF — Mean Time Before Failure
• CVR — Cockpit Voice Recorder
• BA FAIR — Braking action Fair
• EPA — Environmental Protection Agency (US)
• CGL — Circling Guidance Light
• FAR — Federal Acquisition Regulation
• CFE — Customer-Furnished Equipment
• QTY — Quantity
• D-ATSU — A Downstream Air Traffic Services Unit
• EET — Estimated Elapsed Time
• NATO — North Atlantic Treaty Organisation
• Q PROCEDURE — Procedure to identify replacement flight plans
• NACA — National Advisory Committee for Aeronautics
• QMS — Quality Management System
• FIFO — First In, First Out
• FP — Flight Plan
• FOUO — For Official Use Only
• XCOORD — Cancel Co-ordination
• CM — Configuration Management
• LADGPS — Local Area Differential Global Positioning System
• KAEPA — Kuwait Aircraft Engineers and Pilots Association
• HMI — Human Machine Interface
• CNEE — Consignee
• Q&A — Question & Answer
• CKD — Completely Knocked Down

• DHDWTSBE — Despatch Half Demurrage on Working Time Saved Both Ends
• PMP — Project Management Plan
• CIP — Carriage and Insurance Paid to
• CDU — Control Display Unit
• CPDLC — Controller Pilot Data Link Communications
• BA NIL — Braking Action Nil
• BW — Bandwidth
• DE — Germany
• D-OTIS — Data Link Operational Terminal Information Service
• TBA — To Be Advised
• GUI — Graphical User Interface (goo-ey)
• CAF — Currency Adjustment Factor
• W/MOD — With Modification of Vertical Profile
• T-ATSU — Transferring ATS Unit
• GPS — Global Positioning System (ex-NAVSTAR)
• LOB — Line Of Business
• BA POOR — Braking Action Poor
• UA — Ukraine
• XASM — Cancel Assume
• ATD — Actual Time of Departure
• W/STEP — With Step Change in Altitude
• ERP — Effective Radiated Power
• R — Right
• COD — Cash On Delivery
• AACO — Arab Air Carriers Organisation
• QOS — Quality of Service
• WX — Weather
• N — North
• PAR — Precision Approach Radar
• N/A — Not Applicable
• MSL — Mean Sea Level
• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• AIP — Aeronautical Information Publication
• FL — Flight Level
• PACOTS — Pacific Organised Track System
• XCONF — Delete CONFlict
• DFDAU — Digital Flight Data Acquisition Unit
• ATC — Air traffic control
• TV — Television
• BSS 1/1 — Basis 1 Port to 1 Port
• ALT — Altitude
• SID — Standard Instrument Departure
• IR — Iran Air
• NAS — National Airspace System
• HDLC — High-Level Data Link Control
• S-SUP — Sector Supervisor
• HMI — Hazardously Misleading Information
• DH — Decision Height
• EGA — Enhanced Graphics Adapter
• DVOF — Digital Vertical Obstruction File

• IFB — Invitation For Bid
• EXTRAP — Extrapolate
• RNP — Required Navigation Performance
• EU — European Union (1994; formerly referred to as the EEC or EC)
• CTRL — Control
• DK — Deck
• ARINC 753 — HF Data Link System
• NOV — November
• AIXM — Aeronautical Information Exchange Model
• RCU — Remote Control Unit
• ARINC 424 — Navigation System Data Base
• ASD — Aircraft Situation Display
• DOP — Dropping Outward Pilot
• FAS — Free Alongside Ship
• FMC — Flight Management Computer
• ALSF-2 — High Intensity Approach Lighting Systerm with Sequenced Flashing Lights.
• AE — Application Entity
• P,R,D AREA — Prohibited, Restricted, or Danger Area
• OSI — Open Systems Interconnection (iso Standard)
• B/CRS — Back Course
• LEO — Low Earth Orbit (satellite communications)
• PM — Preventive Maintenance
• BL — Bale
• W — White
• D-TO NL — Derated Takeoff Engine Fan Speed
• ADC — Air Defense Command
• OBTEX — Offboard Targeting Experiments
• VAN — Value Added Network
• EU-OPS — EASA Operations Regulations
• DDP — Delivered Duty Paid
• R-CHANNEL — Random Access Channel
• ARINC 419 — Digital Data System Compendium
• CAT — Clear Air Turbulence
• M:M — Many-to-Many Relationship
• AC — Air Canada
• FF — Fuel Flow
• GA — General Aviation
• EBU — Engine Build Unit
• ALP — Airport Layout Plan
• GS — Ground Speed
• CLD — Cloud
• AED — Automated external defibrillator
• FANS — Future Air Navigation System
• LVL — Level
• ACT — Active
• TBD — To Be Determined
• C/N0 — Carrier-to-Noise-Density Ratio
• IAEA — International Atomic Energy Agency
• ARINC 610 — Guidance For Design and Integration of Aircraft Avionics Equipment In Simulators, Supplement 1
• MCE — Management Centre Europe

• CW — Clockwise
• VAFORIT — VAFOR Implementation
• ADF — Automatic Direction Finder
• A/A — Air-to-Air
• MHZ — Megahertz (Megacycles Per Second)
• ACK — Acknowledge (telecommunications; Cf. NAK)
• ATLA — Air Transport Licensing Authority
• NPV — Net Present Value {economics}
• FLT — Flight
• XLTR — Translater
• DRAM — Dynamic Random Access Memory (dee-ram) (computing)
• AOCS — Attitude and Orbit Control System
• RFQ — Request For Quote
• ACN — Aircraft Classification Number
• PDN — Public Data Network
• INFO — Information
• LF — Low Frequency
• W — West
• CRT — Cathode Ray Tube (type of TV)
• AT — Air Traffic
• APR — April River Airport, April River, Papua New Guinea
• CW — Continuous Wave
• BM — Beam
• SV — Space Vehicle
• BAF — Bunker Adjustment Factor
• ARINC 542 — Airborne Oscillograph Flight Data Recorder
• YD — Yaw Damper
• FT — Feet
• M-ADS — Modified Automatic Dependent Surveillance
• IR — Islamic Republic of Iran
• DEA — Drug Enforcement Agency
• ND — Navigation Display
• CCU — Central Control Unit
• NI — Network Interface
• AMSL — Above Mean Sea Level
• PF — Pilot Flying
• F&CM — Flow And Capacity Management
• VSCF — Variable-Speed Constant Frequency
• ARINC 747 — Flight Data Recorder
• O-QAR — Optical Quick Access Recorder
• MCT — Maximum Continuous Thrust
• PFD — Primary Flight Display
• XBRIGHT — Cancel highlighting
• NOR — Notice of Readiness
• DEQ — Delivered Ex Quay (shipping)
• CAVOK — Ceiling And Visibility OK (Kav-okay)
• JAA AMC — JAA Acceptable Means of Compliance
• ATA — Actual Time of Arrival
• PRE-OJT — Pre-On-the-Job Training
• JAN — January

• M/ASI — Mach/Airspeed Indicator
• T-CHANNEL — Time Division Multiple-Access Channel
• GE — Georgia
• CONUS — Continental United States (48 Contiguous States and DC)
• FIS — Flight Information Service
• CW — Carrier Wave
• AFSPS — Arrival First Sea Pilot Station
• COGSA — U.S. Carriage of Goods by Sea Act
• HF — High Frequency
• MLW — Maximum Landing Weight
• MDA — Minimum Descent Altitude
• DOLSP — Dropping Off Last Sea Pilot
• HAZMAT — Hazardous Material
• FAASTEAM — FAA Safety Team
• DAARWIN — Distributed ATM Architecture based on
• DFAX — Digital Facsimile
• SMS — Safety Management Systems
• DES — Delivered Ex Ship
• LAT — Latitude
• SVC — Service
• MODEM — Modulator-Demodulator
• RDP — Radar Data Processing
• CISO — Chief Information Security Officer
• TM — Traffic Management
• EW — Eurowings
• GS — Glide Slope
• NM — Nautical Mile
• CBT — Computer Based Training
• TCA — Terminal Control Area
• ADV — Advise
• MOLOO — More or Less Owners Option
• V — Velocity
• NOTAM — Notice to Airmen
• GCU — Generator Control Unit
• DAFIF — Digital Aeronautical Flight Information File
• SWIM — System Wide Information Management
• MCW — Modulated Continuous Wave
• VSWR — Voltage Standing Wave Ratio
• FCL — Full Container Load
• LIDO — Lufthansa Integrated Dispatch Operation
• A&P — Airframe & Powerplant
• RM — Risk Management
• PSTN — Public Switched Telephone Network
• I(FD) — MTI Improvement Factor
• V/TRK — Vertical Track
• A/C — Aircraft
• HADAMARD — Multi-radar processing written in ADA
• NESDIS — National Environmental Satellite, Data, and Information Service
• P.ACCS — Pairs of ACCs
• PRF — Pulse Repetition Frequency

• LF — Load Factor
• COTR — Contracting Officer Technical Representative
• DOD — United States Department of Defense
• FAQ — Frequently Asked Questions (sometimes Pronounced Fak)
• FOT — Free On Truck
• CRS — Course
• RCR — Runway Condition Reading
• DA/H — decision altitude/height
• FDD — Freight Demurrage Deadfreight
• PHA — Preliminary Hazard Analysis
• D-ATIS — Digital - Automatic Terminal Information Service
• B — Blue
• IMF — International Monetary Fund
• DSS — Decision Support System
• NAAPE — National Association of Aircraft Pilots and Engineers
• SEQ — Sequence
• ITF — International Transport Workers' Federation
• C/S/S/N — Capacity/Safety/Security/Noise
• DZ — Algeria
• DA — Decision Altitude
• FRB — Failure Review Board
• SH — Showers
• EMS — Environmental Management Systems
• VCRI — Verification Cross Reference Index
• IF — Intermediate Frequency
• K — Kilo-
• WP — Work Package
• ISDN — Integrated Services Digital Network
• WG — Working Group
• LOI — Letter Of Intent
• TMA — Traffic Management Advisor
• MTTR — Mean Time To Repair
• FY — Fiscal Year
• OCT — October
• AO — Authorizing Official
• GFE — Government-Furnished Equipment
• UL — Uplink
• BOD — Beneficial Occupancy Date
• EPR — Engine Pressure Ratio
• HIRO — High Intensity Runway Operation
• PCT — Percent
• BRK — Break
• JAAC/JAA CE — JAA Committee
• IA/CC — Indirect Access/Common Control
• THR — Thrust
• P.T.T — Push-to-Talk
• FA — Final Approach
• R,E&D — Research, Engineering and Development
• LTIOV — Latest Time Information of Value
• WT — Weight

• P… — Prohibited Area
• ADIRS — Air Data Inertial Reference System
• BL — Blowing (METAR descriptor)
• R-ATSU — The Receiving Air Traffic Services Unit
• AD — Aerodrome
• CFR — Code of Federal Regulations
• AUTOVON — Automatic Voice Network
• CATX — Categorical Exclusion
• XFDM — Cancel FDM
• NRT — Net Restricted Tonnage
• FOIA — Freedom of Information Act
• DOS — Disk Operating System
• HALS / DTOP — High Approach Landing System / Displaced Threshold Operations
• IMA — Integrated Modular Avionics
• EADI — Electronic Attitude Director Indicator
• FIM — Fault Isolation Manual
• NAS — National Aircraft Standard
• EXEC — Execute
• ARINC 572 — Mark 2 Air Traffic Control Transponder
• ANG — Air National Guard
• CAA — Civil Aviation Authority
• AFB — Air Force Base (USAF)
• AEW — Airborne Early Warning
• SQL — Structured Query Language
• FSS — Flight Service Station
• RAARR — Radar Arrival
• TBO — Time Between Overhaul
• DMA — direct memory access (computer term)
• MM — Middle Marker
• SOW — Statement Of Work
• JAARC — JAA Research Committee
• CAVU — Ceiling And Visibility Unlimited
• NCS — National Communications System
• COS — Chief of Staff
• CPS — Central Processing System
• RSVN — Reservation
• PQP — Project Quality Plan
• MRC — Monthly Recurring Charge
• MBO — Management by Objective
• COOP — Continuity of Operations
• ARINC 743A — GPS/GLONASS Sensor
• ALSF1 — ALS with Sequenced Flashers I
• PMS — Performance Management System
• IA-5 — International Alphabet Number 5
• APA — Allied Pilots Association
• SUA — Special-Use Airspace
• RTLS — Return To Launch Site
• XMITR — Transmitter
• XGEO — Cancel GEO
• C — Close

• FANOMOS — Flight track and Aircraft NOise Monitoring System
• LABSC — LABS GS-200 Computer
• SNR — Signal-to-Noise Ratio
• LOA — Letter Of Agreement
• LOA — Length Overall
• FAACIS — FAA Communications Information System
• ACM — Airspace Control Measures
• AACO — Arab Air Carriers Organization
• FFA — Functional Failure Analysis
• MCP — Mode Control Panel
• CMO — Certificate Management Office
• DBS — Direct Broadcast Satellite
• XOFF/PDR — Cancel Off Predetermined Route
• IF — Intermediate Fix
• CDI — Course Deviation Indicator
• ALQDS — All Quadrants
• CBI — Computer Based Instruction
• O&M — Operation and Maintenance
• ELINT — Electronic Intelligence Satellite
• LABSW — LABS Switch System
• XEXPLT — Cancel Extrapolation
• AFSS — Automated Flight Service Station
• FDR — Flight Data Recorder
• ECAC — European Civil Aviation Conference
• I/AFSS — International AFSS
• BOC — Bell Operating Company
• SHF — Super High Frequency
• PPI — Plan Position Indicator
• DDE — Dynamic Data Exchange (in software parlance)
• DDS — Digital Data Service
• WO — Without
• ACU — Antenna Control Unit
• ARINC 575 — Mark 3 Subsonic Air Data System
• LABSR — LABS Remote Equipment
• SVID — System V Interface Definition
• TK — Turkish Airlines
• FDEDANRSAOCLONL — Freight Deemed Earned, Discountless And Non-Returnable Ship And Or Cargo Lost Or Not Lost
• TAS — True Airspeed
• FZFG — Freezing Fog
• CZ — Czech Republic
• LORAN — Long-Range Aid to Navigation
• SAC — Strategic Air Command
• XIFL — Cancel Intermediate Flight Level
• LIDAR — Lander Light Detection and Ranging
• AMT — Aviation Maintenance Technician
• IBM — International Business Machines Corporation
• LED — law enforcement desk; light emitting diode
• A/D — Analog-to-Digital
• ARINC 603 — Airborne Computer Data Loader
• GPO — Government Printing Office

• AWB — Air Waybill
• JAAB/JAA-B — Joint Boards
• L — Left
• DDD — Detailed Design Document
• ANS — Answer
• RCM — Requirements Correlation Matrix
• ELBA — Emergency Location Beacon-Aircraft
• CRM — Cockpit Resource Management
• FIOS — Free In/Out Stowed
• IFF — Identification Friend or Foe (radar)
• ARTCC — Air Route Traffic Control Center
• CAB — Civil Aeronautics Board
• FPL — Full Performance Level
• NEPA — National Energy Policy Act of 1992
• JALPA — Jamaica Air Line Pilots Association
• TC/OC — Technical Control and Operational Control
• AC — Altocumulus
• HIRTA — High Intensity Radio Transmission Area
• AFCAC — African Civil Aviation Commission
• ITU — International Telecommunication Union
• ADDS — Aviation Digital Data Service
• AUG — August
• OMB — Office of Management and Budget (U.S.)
• XNSSR — Exit NSSR
• PRI — Primary Rate Interface (ISDN)
• DCA — Defensive Counter Air
• DTED — Digital Terrain Elevation Data (dee-ted)
• VDF — Very high frequency Direction Finding station
• GSA — U.S. General Services Administration
• HALPA — Hellenic Air Line Pilots Association
• FO — For Orders
• ACARS — Aircraft Communications Addressing and Reporting System
• NOAA — National Oceanic and Atmospheric Administration (US)
• FD — Free Discharge
• BCR — Benefit/Cost Ratio
• AOB — Air Order of Battle
• GBAS — Ground Based Augmentation System
• STAB — Stabilizer
• ASTERIX — All-purpose Structured Eurocontrol Radar Information Exchange
• MOCA — Minimum Obstruction Clearance Altitude
• SAAFEA — South African Airways Flight Engineers Association
• ACI — Airports Council International
• TCU — Towering Cumulus
• XAP — Crossing Alternate Proposal Message
• DIA — Denver International Airport
• HZ — cycles per second (hertz)
• RAIM — Receiver Autonomous Integrity Monitoring
• SSB — Single Side Band
• RDIF — Radar Data Interchange Format
• WAYPOINT — Position in space usually on aircraft's flight plan

• RIB — Routing Information Base
• RFC — Request For Change
• NAVDB — Navigation Data Base
• EEG — Electro-EncephaloGram
• CCITT — Comite Consultatif International de Telegraphique et Telephonique (International Telegraph and Telephone Consultative Committee) [now ITU-T]
• RTE — Route
• M — Manual
• VBFNG(HI) — High speed CAS at N g's to buffet onset
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• AA — Always Afloat
• ADCCP — Advanced Data Communications Control Procedures
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• HIWAS — Hazardous Inflight Weather Advisory Service
• XHOLD — Cancel Hold
• EPROM — Erasable Programmable Read-Only Memory
• BDI — Both Dates Inclusive
• MEL — Minimum Equipment List
• MTTF — Mean Time To Failure
• BA — Braking Action
• CIP — Capital Investment Plan
• KARLDAP — Karlsruhe Automatic Data Processing and Display System
• CDM — Collaborative Decision Making
• MPO — Metropolitan Planning Organization
• BPS — bits per second
• XFRQ — Cancel FreQuency message
• DML — Data Manipulation Language
• AT&T — American Telephone and Telegraph (U.S. company, also known as "Ma Bell")
• FACF — Final Approach Course Fix
• AAAA — Always Accessible Always Afloat
• ANA — All Nippon Airways
• MN — Magnetic North
• SAW — Surface Acoustic Wave
• CIF — Cost, Insurance, Freight
• STOL — Short Takeoff And Landing
• COTS — Commercial Off the Shelf Software
• MDT — Mean Down Time
• TOR — terms of reference (ICAO/FAA)
• SBIR — Small Business Innovation Research
• ARINC 557 — Airborne Voice Recorder
• ATDNSHINC — Any Time Day/Night Sundays and Holidays Included
• IRU — Inertial Reference Unit
• ARINC 429 — Mark 33 Digital Information Transfer System
• OL — Operating Location
• VBF(LO) — Flaps up minimum buffet speed at current maneuver load factor minus altitude dependent variable
• CFI — Certified Flight Instructor
• MIN — Minimum
• ALS — approach lighting system
• AT — Air Transport
• RATCC — Radar Air Traffic Control Center
• EANPG — Regional European Air Navigation Planning Group

• EFTA — European Free Trade Association (Geneva)
• MOD — Modified
• NAABSA — Not Always Afloat But Safely Aground
• CAT X — Category x Precision Approach
• RMP — Radio Management Panel
• HDOP — Horizontal Dilution of Precision
• MIPS — Millions of Instructions Per Second
• IPT — Integrated Product Team
• 3D — Three Dimensional
• OPM — Office of Personnel Management
• FDP/RDP — Flight Data Processing/Radar Data Processing
• C/N — Carrier-To-Noise Ratio
• OJT — On the Job Training
• ACPT — Accept
• BAF — Belgian Air Force
• DID — direct inward dial
• ADVCTN — Advection
• ARTS — Automated Radar Terminal System
• MAX — Maximum
• TURB — Turbulence
• C — Centigrade
• NTE — Not-To-Exceed
• CFR — Cost and Freight
• ARINC 601 — Control/Display Interfaces
• QPSK — aeronautical quadrature phase shift keying
• FYG — For Your Guidance
• MRA — Minimum Reception Altitude
• CDB — Corporate Database
• CDTI — Cockpit display of traffic information
• HQ — Headquarters (HDQ Preferred)
• SIP — State Implementation Plan
• PMS — Program Management System
• EG — Egypt
• ILS — Instituteument Landing System
• EFIS — Electronic Flight Information System
• LDAP — Lightweight Directory Access Protocol (pronounced Ell-dap)
• WTSPT — Waterspout
• OCA — Oceanic Control Area
• TOP — Cloud Top
• GA — General Average
• SAE — Society of Automotive Engineers
• NOTAMN — New Notam
• PKI — Public Key Infrastructure (cryptography)
• IS — Iceland
• SP — Space
• BIM — Building Information Model
• GUI — Graphic-User Interface
• CAASA — Commercial Aviation Association of Southern Africa
• XFR — Transfer
• ADDENDUM — Additional chartering terms at the end of a charter party

• OO — SkyWest Airlines
• FCC — Federal Communications Commission (US)
• MCA — Minimum Crossing Altitude
• GDP — Ground Delay Program
• DRP — Disaster Recovery Plan
• ARINC 542A — Digital Flight Data Recorder
• PBX — Private Branch eXchange (company phone system)
• ARINC 579 — Airborne VOR Receiver
• AOR — Area of Responsibility. The assigned area to any given unit.
• HOV — High Occupancy Vehicle
• IMPACT — Information Market Policy Actions
• ACR — Atlantic Co-ordinated Route
• ANSP — Air Navigation Service Provider
• ATZ — Aerodrome Traffic Zone
• ASI — Air Speed Indicator
• SEP — September
• RAD — Radio
• DAMFORDET — Damages for Detention
• OPR — Office of Primary Responsibility
• HAT — Height Above Touchdown
• FI — Flight Instructor
• CAA PNG — Civil Aviation Authority of Papua New Guinea
• OU — Croatia Airlines
• EAPTU — Air Line Pilots Trade Union
• A02 — Automated Observation With Precipitation Discriminator
• LGTD — Lighted
• PABX — private automatic branch exchange (telephone)
• ALSF2 — ALS with Sequenced Flashers II
• GEN — General Motors
• DEM — Demurrage
• KBS — Knowledge-Based System
• PIREP — Pilot (weather) Report
• AS — Altostratus
• BADA — Base of Aircraft Data ; Aircraft performance Data
• HBARO — Barometric Altitude
• NEC — National Electric Code
• COACP — Contract Of Affreightment Charter Party
• IMDG — International Maritime Dangerous Goods
• CAA SI — Civil Aviation Authority of Solomon Islands
• AAGDI — Automated Air Ground Data Interchange
• CCSD — command communications service designator; control communications service designator
• DES — Descent
• DIS — Distance
• AQP — Advanced Qualification Program
• ANC — Air Navigation Commission
• KHZ — kilohertz (1000 cycles per second)
• FDOD — CFMU – Flight Data Operations Division
• HZ — Haze (METAR Code)
• ACAIS — Air Carrier Activity Information System
• VBFNG(LO) — Low speed CAS at N g's to buffet onset

• CDT — Controlled Departure Time
• C91A — Emergency Locator Transmitter, Issued 04/85
• MIRL — Medium Intensity Runway Lights
• COA — Contract Of Affreightment
• TCAS — Traffic Collision Avoidance System
• AFS — Aeronautical Fixed Service
• ELBA — Emergency Locator Beacon Aircraft
• PFI — Private Finance Initiative
• SESAR — Single European Sky ATM Research
• BRI — Basic Rate Interface
• SCADA — Supervisory Control And Data Aquisition
• PMS — Pavement Management System
• PAPI — Precision Approach Path Indicator (aviation)
• RDF — Radio Direction Finder
• RAD — Radial
• ADIZ — Air Defense Identification Zone
• PCM — Pulse-Code Modulation
• EAD SGR — EAD Sub-Group
• HW — High Water
• CLR — Clear
• ENG — Engine
• ATO — Air Traffic Organization
• EAMG SSG — EAMG Systems Sub-Group
• FLAS — Flight Level Allocation Scheme
• DEA — Data Exchange Agreement
• DGNSS — Differential Global Navigation Satellite System
• ADF — Automatic Direction Finding
• PVC — Permanent Virtual Circuit (ATM)
• PFN — Pulse-Forming-Network
• FSM — Flight Schedule Monitor
• ARINC — Aeronautical Radio Incorporated
• DIST — Distance
• PDPR — Per Day Pro Rata
• POS — Position
• IATA — International Air Transport Association
• CAA NZ — Civil Aviation Authority of New Zealand
• ATCO — Air Taxi Commercial Operator
• FARAWAY — Fusion of Radar and ADS data through two WAY data link
• PROF — Profile
• LSA — Lysergic Acid Amide
• MK — Republic of Macedonia
• GW — Gross Weight
• GCA — Ground-controlled approach
• CAT — Computer Aided Testing
• CRF — Central Repair Facility
• C87A — Low Range Radar Altimeters, Issued 01/01
• FACUTL — Facility Utilization System
• RPI — Real Property Inventory
• FEP — Front End Processor
• BY — Belarus

• LT — Long Ton
• OPT — Optimum
• IMC — Instrument Meteorological Conditions
• QAE — Quality Assurance Evaluator
• CON — Continuous
• UT — Universal Time
• BCA — Benefit/Cost Analysis
• AVG — Average Voltage Gain
• TTY — Teletype Telex Machine
• PAMPLAY — PAM rePLAY system
• AC — Advisory Circular
• IA — Inspection Authorization
• MTBCF — Mean Time Between Critical Failures
• MAN — Manual
• AHL — Australian Hold Ladders
• ECAM — Electronic Centralized Aircraft Monitor
• FRA — Federal Railroad Administration
• DBMS — Data Base Management System
• MIT — Massachusetts Institute of Technology (U.S.)
• ARP — Aerodrome Reference Point
• DEST — Destination
• LLWAS — Low Level Wind Shear Alert System
• SES — Single European Sky
• DABRK — Daybreak
• PALLAS — Phased Automation of the Hellenic ATC System
• PDC — Pre-Departure Clearance
• CARSR — Common Air Route Surveillance Radar
• MMU — Memory Management Unit
• BAHAMAS ALPA — Bahamas Airline Pilots Association
• ASMA — Aerospace Medical Association
• DGAC — Direction Générale de l’Aviation Civile
• 2D — Two-Dimensional
• TSU — Technical Support Unit
• LOFT — Line-Oriented Flight Training
• MDD — Meteorological Data Distribution
• GMT — Greenwich Mean Time (Zulu)
• CVSM — Conventional Vertical Separation Minimum
• ARINC 571 — Inertial Reference System
• HDD — Head Down Display
• CASE — computer-automated software engineering
• IPV6 — Internet Protocol Version 6
• HWCI — Hardware Configuration Item
• INS — Inertial Navigation System
• PFA — Probability of False Alarm
• BOW — The forward part of a ship
• ATHWARTSHIPS — At right angles to the centreline of the ship
• AP — Airport
• ACID — Aircraft Identification
• CR — Current Rate
• MECO — Main Engine Cutoff

• 5LNC — Five Letter Name Code
• FZRA — Freezing Rain (METAR Code)
• DRAUGHT — Depth to which a ship is immersed in water
• FAC — Facilities
• VCMAX — Active Maximum Control Speed
• FOD — Foreign Object Damage
• EIS — Environmental Impact Statement (US)
• OUTB — Outbound
• DHS — Department of Human Services
• IRS — Inertial Reference System
• FTE — Flight Technical Error
• SDLC — Software development life cycle
• AEWPD — Adapted EATM Work Programme Document
• ADS-C — Automatic Dependent Surveillance-Contract
• AOM — Aircraft Operating Manual
• NSSL — National Severe Storms Laboratory
• CROB — Cargo Remaining on Board
• UPU — Universal Postal Union
• NOSIG — No Significant Change
• FR — From
• RISC — Reduced Instruction Set Computer
• IDS — Intrusion Detection System
• DARP(S) — Dynamic Airborne Route Planning (System)
• DNRCAOSLONL — Discountless and Non-Returnable Cargo and/or Ship Lost or Not Lost
• CAS — Calibrated Air Speed
• PIC — Pilot In Command
• CRDA — Converging Runway Display Aid
• FZDZ — Freezing Drizzle
• I — Italy
• CFAR — Constant False Alarm Rate
• CMC — Central Maintenance Computer
• TRU — True
• ECMT — European Conference of Ministers of Transport
• AAF-1 — Director of Airway Facilities
• DR — Dead Reckoning
• CFDS — Centralised Fault Display System
• ADSY — Administrative Equipment Systems
• HU — Hungary
• STAR — Standard Terminal Arrival Route
• UN — United Narions
• ARINC 597 — Aircraft Communications Addressing And Reporting System
• CG — Center of Gravity (DXS)
• IFR — Instrument Flight Rules
• QAR — Quick Access Recorder
• WOCL — Window of Circadian Low
• QDR — Reciprocal Magnetic Bearing
• DTM — Digital Terrain Model
• CY — Cyprus Airways Ltd
• LT — Liner Terms
• IA — International Alphabet

• DBE — Disadvantaged Business Enterprise
• A/P — Autopilot
• RMS — root mean square (preferred over "RMS")
• KW — Kilowatt (one thousand watts) (measurement)
• SAT — Static Air Temperature
• ARINC 606 — Guidance For Electrostatic Sensitive Device Utilisation & Protection, Sup. 1
• EHF — Extremely High Frequency
• FEC — Forward Error Correction
• ABV — Above
• ATE — Automatic Test Engineer
• PT — Product Team
• AFA — Association of Flight Attendants
• ICASM — International Congress of Aviation and Space Medicine
• AIRNAV — Airports and Navigation Aids Database System
• DNIC — Data Network Identification Code
• OVERBOARD — Over the side or out of the ship
• WPM — speech--words per minute
• AIDC — Air traffic control Inter-Facility Ground Data Communications
• VMIN — Basic Clean Aircraft Minimum CAS
• ATAG — Air Transport Action Group
• ASDE-X — Airport Surface Detection Equipment - X (frequency) band
• QP — Quality Plan
• MMR — Multi-Mode Receiver
• FOQA — Flight Operations Quality Assurance Programs
• NASA — National Aeronautics and Space Administration (US)
• HAWOP — Helicopter All-Weather Operations Study Group
• ARINC 408A — Air Transport Indicator Cases And Mounting
• APS — Arrival Pilot Station
• DCE — Data Communication Equipment
• FMGC — Flight Management Guidance Computer
• MAG — Magnetic
• 16PF — Sixteen Personality Factor Questionnaire
• SAS — Scandinavian Airlines System
• GML — Geography Markup Language
• ANCA — Airport Noise and Capacity Act
• FIR — Flight Information Region
• XEU — European Currency Unit
• PII — Personally Identifiable Information
• AMVER — Automated Mutual-Assistance Vessel Rescue system
• LW — Low Water
• AM — AeroMexico
• ELT — Emergency Locator Transmitter
• NORDO — No-Radio
• WMO — World Meteorological Organisation
• MNM — Minimum
• EADCOS — EAD Co-ordination Group
• BTN — Between
• AIR — Aircraft Certification Service
• AAIB — Air Accident Investigation Branch
• CONS — consumption

• L/C — Letter of Credit
• ARINC 740 — Multiple-Input Cockpit Printer
• EST — Estimated Starting Time
• FCC — Flight Control Computer
• TBC — The Boeing Company
• AVMED — Aviation Medicine
• CI — China Airlines - Taiwan
• EXER — Exercise
• MVFR — Marginal Visual Flight Rules
• AFDK — After Dark
• DR — Drifting (METAR descriptor)
• BWAD — Brackish Water Arrival Draft
• TN — True North
• CPD — Charterers Pay Dues
• ARINC 566A — Mark 3 VHF Communications Transceiver
• ARINC 596 — Mark 2 Airborne SELCAL System
• TMC — Thrust Management Computer
• ARINC 421 — Guidance For Standard Subdivision of ATA Spec 100 Numbering System for Avionics
• AILS — Automatic Instrument Landing System
• AVAIL — Available
• BRG — Bearing
• ALTRV — Altitude Reservation
• 1 PPS — One Pulse Per Second
• RTCA — Radio Technical Commission for Aeronautics
• TX / RX — Transmitter / Receiver
• ARINC 573 — Aircraft Integrated Data System Mark
• MAINT — Maintenance
• SS 30 — 30 Minutes after Sunset
• ARINC 574 — Passenger Announcement, Entertainment & Service Multiplex System
• GOES — Geostationary Operational Environmental Satellite
• AFFSC (E) — Air Forces Flight Safety Committee (Europe)
• IANSSC — IANS Steering Committee
• RLLS — Runway Lead-In Light System
• PDR — Preferential Departure Route
• D — Derated
• TSTMS — Thunderstorms
• SDR — Service Difficulty Report
• MBPS — Megabits per second
• EFB — Electronic Flight Bag
• AGHME — Aircraft Geometric Height Measurement Element
• BAREBOAT CHTR. — Bareboat Charter
• NEG — NEGative
• ACDO — Air Carrier District Office
• CST — Centistoke
• GDOP — Geometric Dilution Of Precision
• IFTO — International Federation of Tour Operators
• DMU — Data Management Unit
• HDLTSBENDS — Half Despatch Lay Time Saved Both Ends
• GPRA — Government Performance and Results Act
• LUX — Findel International Airport, Luxembourg-Findel, Luxembourg

• FRT — Freight
• RAPPI — Random Access Plan-Position Indicator
• AAIB — Air Accidents Investigation Branch
• WO — World Airways, Inc
• AWACS — Airborne Warning And Control System
• LATA — Local Access and Transport Area
• GHZ — Gigahertz
• VSP — Vertical Speed
• VNAV — Vertical Navigation
• FQR — Formal Qualification Review
• TDMA — Time Division Multiple Access
• BOB — Bunker On Board
• MLDT — Mean Logistic Down Time
• SGL — Signal
• EFAS — En Route Flight Advisory Service
• CSD — Constant Speed Drive
• AWIPS — Advanced weather Interactive Processing System (NOAA)
• ADA — Advisory Area
• ASCP — Aviation System Capacity Plan
• CAT — Category (e.g. CAT-5 cable)
• ARINC 745 — Automatic Dependent Surveillance, Supplement 1
• EIA — Extended Interaction Amplifier
• HGT — Height
• BSC — Binary Synchronous Communication
• SSTS — Space Surveillance and Tracking System
• LDI — Landing Direction Indicator
• NADSW — NADIN Switches
• NPRM — Notice Of Proposed Rule Making
• MSSR — Monopulse Secondary Surveillance Radar
• A&E — Architecture and Engineering
• RAES — Royal Aeronautical Society
• PVD — Plan View Display
• TGT — Target
• PALPU — Pancyprian Airline Pilots Union
• NPS — Navigation Performance Scales
• DOS — United States Department of State
• CFWU — Central Flow Weather Unit
• PUP — Principal User Processor (NEXRAD)
• DATALINK — Digitized Information Transfer (air/ground)
• NASTEP — National Airspace System Technical Evaluation Program
• LCN — Load Classification Number
• OPX — Off-Premises Exchange
• ARINC 746 — Cabin Communications System, Supplement
• RSPL — Recommended Spare Parts List
• IFPZ — IFPS Zone
• ARO — Air Traffic Services Reporting Office
• DES — Descend
• FAP — Final Approach Point
• TDOP — Time Dilution of Precision
• EMAS — Engineered Materials Arresting System

• SGS 85 — Sovietic Geodetic System
• NMB — National Mediation Board
• DPSK — Differential Phase Shift Keying
• APRT — Airport
• EVM — Earned Value Management
• HAPI — Helicopter Approach Path Indicator
• NOTAMC — Notam Cancelling another Notam
• XTRK — Cross Track Error
• DMN — Data Multiplexing Network
• NRL — Naval Research Laboratory
• IROI — Instantaneous Return on Investment
• CMIP — Common Management Information Protocol (ATM)
• CPS — characters per second
• WBC — Weight and Balance Computer
• LOCID — Location Identifier
• EDF — Electricité de France
• EFMS — Experimental Flight Management System
• RESMA — Requirements for Emergency and Safety Airborne Equipment
• OTV — Orbital Transfer Vehicle
• CD-ROM — Compact Disk - Read Only Memory
• FADEC — Full Authority Digital Engine Control
• ARINC 561 — Air Transport Inertial Navigation System - INS
• VCCS — Voice Communication and Control System
• 4D FMS — 4D Flight Management System
• PALS — Precision Approach Lighting System
• VTS — Vessel Traffic Service
• CASS — Continuing Analysis and Surveillance System
• SASKI — Name of an ATS Route reporting point
• Z — Zulu (Greenwich mean time)
• FIW — Free in wagon
• FAA — Federal Aviation Authority
• FDP — Flight Data Processing
• C-ATSU — Controlling ATS Unit
• UIR — Upper Information Region
• DA — Descent Advisor
• HP — Holding Pattern
• TDD — Time Division Duplex
• RTOS — Real-Time Operating System
• AMS — Acquisition Management System
• DLP — Data Link Processor
• NAVSAT — Navigation Satellite
• DIR — Directory
• FSP — Flight Strip Printer
• STTR — Small Business Technology Transfer
• SSEC — Static Source Error Correction
• LY — El Al Israel Airlines
• ARINC 744 — Full Format Printer
• CPIC — Capital Planning and Investment Control
• AJR — System Operations Services, Air Traffic Organization
• LOI — Letter of Indemnity

• IAO — In And Out
• ACF — Area Control Facility
• AD — airworthiness directives (FAA)
• BROB — Bunkers Remaining on Board
• A/C — Aircraft Commander
• KM — Kilometer (1,000 meters)
• GLD — Glider
• MAR — March
• ALERFA — alert phase
• ATMAC — Air Traffic Management Advisory Committee
• FBO — Fixed-Based Operator
• ALT HOLD — Altitude Hold Mode
• RD — Requirements Document
• RBP — Radar Bypass Processor
• BBB — Before Breaking Bulk
• V — Volt (measurement)
• PRM — Precision Runway Monitor
• NIMA — National Imagery and Mapping Agency (became National Geospatial-Intelligence Agency|NGA)
• AO — Aircraft Operator
• ANTHAM — Antwerp-Hamburg Range
• AP — Autopilot
• AIRS — Advanced Infrared Sounder
• FSRM — Facility Security Risk Management
• F — Degrees Fahrenheit
• HDG — Heading
• KBPS — kilobits per second
• TO EPR — Takeoff Engine Pressure Ratio
• FIOST — Free In/Out and Trimmed
• AOC — Airline Operation Control
• ADA — Air Defense Area
• JCN — Job Control Number
• ISA — International Standard Atmosphere
• CASA — Civil Aviation Safety Authority
• BENDS — Both Ends (shipping)
• AIMS — Airplane Information Management System
• WSO — Weather Service Office
• FREE EXINS — Free of any Extra Insurance
• HEX — Hexadecimal (base 16)
• FWAD — Fresh Water Arrival Draft
• ABM — Abeam
• VCO — Voltage Controlled Oscillator (Oscillation)
• ACNZ — Airways Corporation of New Zealand Ltd
• ACL — Altimeter Check Location
• ALSTG — Altimeter Setting
• AAIM — Aircraft Autonomous Integrity Monitoring
• ELVENT — Electric Ventilation
• TLS — Target Level of Safety
• ARINC 566 — Airborne VHF Communications Transceiver And Mark 1 VHF SATCOM System
• LRNS — Long-Range Navigation System
• FIT — Free In Trimmed

• AOPA — Aircraft Owners and Pilots Association
• AAP — Advanced Automation Program
• RTS — Return To Service
• CIRM — International Radio Maritime Committee
• QF — Quality Factor
• HUD — Head-Up Display
• AIFSS — Automated International Flight Service Station
• LTP — Landing Threshold Point
• AT&T ASDC — At&t Agency Service Delivery Center
• AF — Air France
• DTS — Dedicated Transmission Service
• EIB — European Investment Bank
• VRS — Voice Response System
• JMCT — Job Management Consultative Team [job analysis]
• EGPWS — Enhanced Ground-Proximity Warning System
• ITIL — Information Technology Infrastructure Library
• PRN — Pseudo-Random Noise
• M/V — Merchant Vessel
• ATCSCC — Air Traffic Control System Command Center
• EFQM — European Foundation for Quality Management's
• CPD — Continuous Professional Development
• DALR — Digital Audio Legal Recorder
• LEC — Local Exchange Carrier
• FPB — Flight Progress Board
• EV — every
• IMG — Immigration
• FMF — Facility Master File
• FE — Flight Examiner
• AVBL — available
• DPI — Dots per inch.
• PER SE — By Itself
• TIAS — True Indicated Airspeed
• CIT — Compressor Inlet Temperature
• IOT&E — Independent Operational Test and Evaluation
• ARINC 559A — Mark 2 Airborne HF SSB/AM System
• ATFM — air traffic flow management
• AFISO — Aerodrome Flight Information Service Officer
• SM — Statute Mile
• IAT — Investment Analysis Team
• OBO — Ore/Bulk/Oil vessel
• FAL — Final Assembly Line
• ATUTC — Actual Times Used to Count
• ARINC 578 — Airborne ILS Receiver
• AIRPROX — The code word used in air traffic incident report to designate aircraft proximity
• NWS — National Weather Service (formerly U.S. Weather Bureau)
• DAF — Deliver At Frontier
• AAS — advanced automation system (FAA)
• VTOL — Vertical Take-Off & Landing
• ADS — automatic dependent surveillance
• LIFR — Low Instrument Flight Rules

• LB — Local Battery
• DESP — Despatch
• NSW — No Significant Weather
• NRZ — Non-Return-To-Zero
• CLC — Course Line Computer
• HALO — High Altitude, Low Opening (skydiving term)
• SITA — Société Internationale de Télécommunications Aéronautiques
• ARAG — Amsterdam Rotterdam Antwerp Gent Range
• PBD — Place Bearing/Distance
• JTSO — Joint Technical Standard Order
• AFDS — Autopilot Flight Director System
• ITSM — Information Technology Service Management
• NFPA — National Fire Protection Association
• FCL — Flight Crew Licensing
• DITCO — Defense Information Technology Contracting Office (formerly DECCO)
• RMS ERROR — Root Mean Square error.
• NTZ — No Transgression Zone
• AFL — Actual Flight Level
• JPDA — Joint Probabilistic Data Association
• ETD — Estimated Time of Departure
• RPV — Remotely Piloted Vehicle
• SATSAR — Satellite-aided Search And Rescue
• ANP — Air Navigation Plan
• TLV — Type-Length-Value
• RSR — en-Route Surveillance Radar
• AEA — Association of European Airlines
• CONOPS — Concept of Operations
• CX — Cathay Pacific Airways
• ERAM — En Route Automation Modernization
• STANINE — Standard Nine Score
• ADES — Aerodrome of Destination
• NLA — New Large Aircraft
• CCIR — International Radio Consultative Committee (French Acronym)
• GNSS — Global Navigation Satellite System
• ARINC 415 — Operation/Technical Guidelines On Failure Warning and Functional Test
• DHDATSBE — Despatch Half Demurrage on All Time Saved Both Ends
• HVAC — Heating, Ventilating, And Air Conditioning
• OPI — Office of Primary Interest
• NORAC — No Radio Contact
• ADT — Air Data Tester
• ECG — En Route Communications Gateway
• SARSAT — Search and Rescue Satellite
• XM — External Master
• DEP — Depart
• AKARD — Available Knowledge And required system Research and Development
• TEMP — Temperature
• T — Time
• FPS — Flight Progress Strip
• VGND — Ground Velocity
• FIDS — Flight Information Display System

• QDM — Magnetic Heading
• DETRESFA — distress phase (lCAO)
• KCAS — Knots Calibrated Airspeed
• ECA — European Cockpit Association
• BCC — Battery Charge Controller
• ATC-HMI — Air Traffic Control Human Machine Interface
• RA — Resolution Advisory
• SNGL — Single
• VMC — visual meteorological conditions
• AMASS — Airport Movement Area Safety System
• RTO — Rejected Take-Off
• EIRP — EffectiveIsotropic Radiated Power
• ARSR — Air Route Surveillance Radar
• MDO — Marine Diesel Oil
• P&I — Protection and Indemnity insurance
• EPCU — Electrical Power Control Unit
• NSSFC — National Severe Storms Forecast Center
• AWOP — All Weather Operations Panel (ICAO)
• MNS — Mission Needs Statement
• ASA — Airservices Australia
• ADZY — Advisory
• CRAF — Civil Reserve Air Fleet
• FPO — Flight Procedures Office
• DOC — Document
• AWOG — All Weather Operations Group
• BOFFER — Best Offer
• REIL — Runway End Identification Light
• IG — Inspector General (HHS)
• FTI — FAA Telecommunications Infrastructure
• CDA — Continuous Descent Approach
• TOT — Total
• DSPY — Display
• AIT — Automated Information Transfer
• CACRC — Commercial Aircraft Composite Repair Committee
• ADSP — Automatic Dependent Surveillance Panel
• PT — Total Pressure
• AY — Finnair, Oyj - Finland
• RSYD — Release Subject to Your Discretion
• FILO — Free In/Liner Out
• ASDA — Accelerate-Stop Distance Available
• CPE — Customer Premise Equipment
• RPP — Radiation Protection Program
• AOM — Aircraft Operations Manual
• ARINC 609 — Design Guidance For Aircraft Electrical Power Systems
• ACSE — Application Control Service Element
• NP — Network Protocol
• PELA — Proficiency test in English Language for ATCOs
• FDIO — Flight Data Input/Output
• EHSI — Electronic Horizontal Situation Indicator
• ACCS — Air Command and Control System

• RSTD — Restricted
• VCSS — Voice Communications Switching System
• QFU — Magnetic orientation or runway in use
• ACLT — Actual Landing Time Calculated
• CRT — Choice Reaction Time
• GNDCK — Ground Check
• VPATH — Vertical Path
• ARINC 605 — Users Guide For ARINC 616 Avionics Subset Of ATLAS Language
• CNL — Cancel
• SSR MODE S WG — Secondary Surveillance Radar Mode Selective WG
• NPR — National Performance Review (office)
• PTH — Path
• ARINC 743 — Airborne Global Positioning System Receiver
• ALCE — Airlift Control Element
• IUAI — International Union of Aviation Insurers
• CTR — Container Fitted
• TMU — Traffic Management Unit
• BASE AM — Base Arrival Manager
• LC — Local Control
• FIO — Free In/Out
• ADM — Aeronautical Decision Making
• ARINC 576 — Mark 4 Subsonic Air Data System
• CNCL — Cancel
• DZ — Drizzle
• PSN — Packet Switched Network
• KT — Knots
• FCA — Free Carrier Alongside
• TBN — To Be Notified
• ABDIS — Automated Data Interchange System Service
• AAOSA — Always Afloat or Safe Aground
• AOC — Aerodrome Obstacle Chart
• MAPT — Missed Approach Point
• EST — Estimated Ship Time
• F&E — Facilities and Equipment
• SRV — Server
• MMI — Marshall Management Instruction
• AVOL — aerodrome visibility operational level
• OGC — Open Geospatial Consortium
• SSAP — Source Service Access Point
• OT&E — Operational Test and Evaluation
• IISLS — Improved Interrogation Side Lobe Suppression
• ARINC 306 — Guidance For Designers Of Aircraft-Electronic Installations
• AOR-E — Atlantic Ocean Region East
• NTN — Network Terminal Number
• HSI — Horizontal Situation Indicator
• LON — Longitude
• PSS — Packet Switched Service
• DR — Disaster Recovery
• CDR — Coded Departure Routes
• ABAS — Aircraft-based Augmentation System

• FOR — Free On Rail
• SMR — Surface Movement Radar
• RP — Restoration Priority
• ATCT — Airport Traffic Control Tower
• ASLAR — Aircraft Surge Launch And Recovery
• SGI — Silicon Graphics Incorporated
• EU-FCL — EASA Flight Crew Licensing
• QTG — Qualification Test Guide
• FST — First
• A01 — Automated Observation Without Precipitation Discriminator
• AFIS — Airport Flight Information Service
• AFTN — Automated Fixed Telecommunications Network
• TOD — Top of Descent
• XY — Ryan Air
• NMC — National Meteorological Center (US)
• ATSAP — Air Traffic Safety Action Program
• ACAS — Airborne Collision Avoidance System
• TYPH — Typhoon
• FRS — Functional Requirements Specifications
• CAP — Combat Air Patrol
• RUC — Rapid Update Cycle
• A/I — Accident/Incident
• FMC — Federal Maritime Commission's
• PAWES — performance assessment and workload evaluation
• C-ATSU — Current Air Traffic Services Unit
• AJW — Technical Operation Services, Air Traffic Organization
• AMSS — Aeronautical Mobile Satellite Service
• ASP — Arrival Sequencing Program
• DCS — Double Channel Simplex
• POS REF — Position Reference
• ADCOM — Address Commission
• RMK — Remark
• ABOARD — On or within the ship
• STA — Scheduled Time of Arrival
• TT — Total Temperature
• PERF — Performance
• FACC — Feature and Attribute Coding Catalogue
• ARINC 591 — Quick Access Recorder For Aids System
• VSBY — Visibility
• SO — Southern Airways
• DIP — Drop and Insert Point
• AAA — Amended meteorological message
• OO — Owners Option
• DRFT — Drift
• SIR — Screening Information Request
• CAS — Close Air Support
• ADIZ — Air Defence Identification Zone
• SN — Brussels Airlines
• TDWR — Terminal Doppler Weather Radar
• AZM — Azimuth

• CEQ — Council on Environmental Quality (U.S.)
• AATF — Airworthiness Assurance Task Force
• PHINOM — Nominal Bank Angle
• DETR — Department of the Environment, Transport and the Regions
• FSK — Frequency Shift Keying
• LGT — Light
• AFIL — Air Filed Flight Plan
• ASPH — Asphalt
• METAR — Meteorological Terminal Aviation Routine Weather Report
• FEU — Forty-Foot Equivalent Unit
• ATLC — Atlantic
• ATLAS — Air Traffic Land and Air Study
• ATS — Air Traffic Services
• EFSTS — Electronic Flight Strip Transfer System
• HST — Hypersonic Transport
• KE — Korean Airlines
• SSR — Software Specification Review
• AITS — Automated Inventory Tracking System
• AEFMP — Algeria, Spain, France, Maroc, Portugal Project
• ACAA — Air Carrier Association of America
• IAS — Indicated Air Speed
• JUN — June
• AIRAC — Aeronautical Information Regulation and Control
• CZM — Conventional Zero Meridian
• ATAF — Allied Tactical Air Force (NATO)
• GENOT — General Notice
• AAME — Association of Aviation Medical Examiners
• GEADGE — German Air Defense Ground Environment
• MOGAS — Motor Gasoline
• SALS — Short Approach Lighting System
• OP — Operational
• 4D — Four-Dimensional
• CAEM — Commission for Aeronautical Meteorology (WMO)
• ATA — Airport Traffic Area
• GRT — Gross Registered Tonnage/Tons
• GNLU — GNSS Navigation and Landing Unit
• IFSS — International Flight Service Station
• ADLY — Arrival Delay
• ITMRA — Information Technology Management Reform Act (Part of the Clinger-Cohen Act)
• ARPL — ADEXP Format Repetitive Flight Plans Message
• IVSI — Instantaneous Vertical Speed Indicator
• PRKG — Parking
• EQPT — Equipment
• JAN — January
• J2EE — Java 2 Enterprise Edition
• ODIF — Open Document Interchange Format
• DNSTRM — Downstream
• RPR — Real Property Report
• VS — Design Speed for Maximum Gust Intensity
• MMEL — Master Minimum Equipment List

• ASYNC — Asynchronous
• DVD — Dual View Display
• AUTONAV — Auto-Navigation
• IFOR — Implementation Force
• HX — No Specific working hours
• QUIS — Questionnaire for User Interface Satisfaction
• TMA — Terminal Area
• CAAFI — Commercial Aviation Alternative Fuels Initiative
• SU — Aeroflot Russian Airlines
• ARPA — Advanced Research Project Agency's
• LOE — Line Oriented Evaluation
• MTD — Moving Target Detection
• MHA — Minimum Holding Altitude
• ECS — Environmental Control System (Subsystem)
• ASE — Altimetry System Error
• FRQ — Frequent
• CART — Classification And Regression Tree (method In Statistical Analysis)
• MDA — McDonnell-Douglas Aerospace
• CG — centre of gravity
• AAPA — Association of Asia Pacific Airlines
• ALPA — Japan Air Line Pilots Association of Japan
• AEP — FAA Office of Aviation Policy Planning and Environment
• IW — Inside Wiring
• 1 :1 — One-to-one relationship
• MTOW — Maximum Take-off Weight
• APC — Aeronautical Passenger Communication
• ETE — Estimated Time En Route
• FSCAP — Flight Safety Critical Aircraft Parts
• ATIS-B — Automatic Terminal Information Service - Broadcast
• FRZN — Frozen
• VCMIN — Active Minimum Control Speed
• AOCC — Atlantic Operations Control Center
• DEG — Degree
• FP — Free Pratique
• GFP — Government Furnished Property
• EAD — Earliest Arrival Date
• AVI — Audio/Video Interleaved Format
• PASTUS — Past Us
• WSW — West-South-West
• IM — Inner Marker
• ALTM — Altimeter
• SLEP — Service Life Extension Program
• UAT — Universal Access Transceiver
• ARMATS — State Closed Joint-Stock Company of Armenian Air Traffic Services
• BR — Eva Airways Corporation
• FSYS — Flight Service Station Equipment Systems
• DEIS — Draft Environmental Impact Statement (US)
• NSAP — Network Service Access Point
• SARPS — Standards and Recommended Practices
• PROM — Programmable Read Only Memory (chip)

• DF — Direction Finder (Finding)
• CLG — Calling Line
• DAPS — Days all Purposes
• ALSF — Approach Lighting System With Sequenced Flashing Lights
• CRAM — Conditional Route Availability Message
• ULR — Ultra Long Range
• NCAR — National Center for Atmospheric Research (US)
• TSE — Total System Error
• CGL — Circling Guidance Lights
• IANS — Institute of Air Navigation Services
• AUTOCAD — Automatic Computer Aided Design
• MNOP — Maximum Normal Operating Pressure
• AOC — Aircraft Operations Centre
• ADIC — ATS Interfacility Data Communications
• CHTRS — Charterers
• DL — Downlink Message
• ID — IDentifier
• WFTU — World Federation of Trade Unions
• MCC — Maintenance Control Center
• RWY — Runway
• APPA — Asociacion Profesional de Pilotos Aviadores de Costa Rica
• LH — Lufthansa German Airlines
• LVL CHG — Level Change
• A/A — Air/Air
• ADZ — Advise
• DAR — Designated Agency Representative
• BAA — British Airport Authority
• ARR — Arrive
• CD — Candela
• CDRL — Contracts Data Requirements List
• CDV — Compressed Digital Video
• OGE — Operational Ground Equipment
• CPCS — Consolidated Production Control System
• TODA — Take-Off Distance Available
• AARA — Amsterdam-Antwerp-Rotterdam Area
• UAB — Until Advised By
• CSIS — Centralized Storm Information System
• DGELG — Dangerous Goods European Advisory Group
• DNSLP — Downslope
• REQ — Request
• COV — Cover
• FREQ — Frequency
• SHEL — Software, Hardware, Environment, Liveware
• EARS — En Route Analysis and Reporting System
• ACCID — Notification of an aircraft accident
• TC — Transit Corridor
• AOV — Air Traffic Safety Oversight Service
• AIG — Airbus Industries Group
• GEO — Geographic
• ISLS — Interrogation Side Lobe Suppression

• DDM — Difference in Depth of Modulation
• MOC — Memorandum Of Cooperation
• DPTH — Depth
• AALPBH — Association of Airline Pilots in Bosnia & Herzegovina
• ATCO — Air Traffic Control Officer
• COT — At the Coast
• PPL — Private Pilot License
• MTI — Moving Target Indicator
• FIXM — Flight Information Exchange Model
• A/N — Arrival Notice
• COE — Center of Excellence
• JUL — July
• DMSH — Diminish
• ACSA — Allied Communications Security Agency
• C/A CODE — Course / Acquisition Code
• RTA — Required Time of Arrival
• LAAS — Local Area Augmentation System
• ADLP — Aircraft Data Link Processor
• BSS — Basis
• LDG — Landing (aviation)
• NW — Northwest Airlines
• ARINC 608 — Standard Modular Avionics Repair And Test System
• SPAS — Safety Performance Analysis System
• RFL — Requested Flight Level
• JD TF — Job Description Task Force
• FIN — Finnair Oyj, Finland
• LZ — Balkan Bulgarian Airlines
• E M — signalling
• A/S — Alongside
• ATM — Air Transportation Management
• FLM — Front Line Manager
• PRORES — Problem Resolution
• DEGS — Degrees
• FEIS — Final Environmental impact statement (US)
• OAT — Outside Air Temperature
• ITI — Interactive Terminal Interface
• GADO — General Aviation District Office
• FPAP — Flight Path Alignment Point
• ISSCA — Information Systems Security Certification Agent
• AFMS — Automatic Flight Management System
• CNVTV — Convective
• CAI — Contractor-Acceptance Inspection
• TI — Texas International
• PRN CODE — Pseudo Random Noise Code
• SAS — Scandinavian Airline Systems
• PHPD — Per Hatch Per Day
• QUAD — Quadrant
• NAWAU — National Aviation Weather Advisory Unit
• IVRS — interim voice response system
• AFTIL — Airway Facilities Tower Integration Laboratory

• SSW — South-South-West
• ODAL — Omnidirectional Approach Lighting System
• B&H — Bosnia & Herzegovina
• HTZ — Helicopter Traffic Zone
• EVAS — Enhanced Vortex Advisory System
• MOD — Memorandum of Decision
• FPLMTS — Future Public Land Mobile Telecommunications System
• GLOSS — Global Sea Level Observing System (of IOC)
• XNG — Crossing
• WMSCR — Weather Message Switching Center Replacement
• ATCRB — Air Traffic Control Radar Beacon
• RSLS — Receiver Side Lobe Suppression
• VCR — Visual Control Room
• NADA — NADIN Concentrator
• CAVOK — Clouds and Visibility OK
• PFL — Planned Flight Level
• HIRL — High Intensity Runway Lights
• FISO — Flight Information Service Officer
• ARP — Aerospace Recommended Practice
• CIDIN — Common ICAO Data Interchange Network
• TSNT — Transient
• DRCP — Data Reduction Computer Program
• AMA — Area Minimum Altitude
• FOFFER — Firm Offer
• ETC — Estimated Time of Completion
• CNTRLN — Centerline
• BRA — Bearing, Range and Altitude
• WGS 84 — World Geodetic System 1984
• TWY — Taxiway
• SSR — secondary surveillance radar (ICAO/FAA)
• ASQP — Airline Service Quality Performance
• ACAMS — Aircraft Condition Analysis and Management System
• VASIS — Visual Approach Slope Indicator System
• SVN — Satellite Vehicle Number
• FEB — February
• AFIZ — Aerodrome Flight information Zone
• QBI — Compulsory IFR flight
• ASC — AUTODIN Switching Center
• ATCO — Air Traffic Controllers Organization
• AMSSP — Aeronautical Mobile Satellite Service Panel
• COCESNA — Central American Corporation for Air Navigation Services
• AFAST — Active Final Approach Spacing Tool
• CNS/ATM — Communication, Navigation and Surveillance / Air Traffic Management
• BELOW — Beneath the deck
• RCH — Reach
• VASI — Visual Approach Slope Indicator
• HG — Mercury (Latin Hydrargyrum)
• AMOS — Automated Meteorological Observation Station
• ODS — Operational Data Store (knowledge management)
• DYSIM — Dynamic Simulator

• AAC — Airline Administrative Communication
• ARF — Airport Reservation Function
• RMU — Radio Management Unit
• CPC — Certified Professional Controller
• FZL — Freezing Level
• BAPA — Bangladesh Airline Pilots Association
• V1 — Take-Off Decision Speed
• NPA — Non Precision Approaches
• ARINC 602 — Test Equipment Guidance
• ALPA-FYROM — Air Line Pilots Association of The Former Yugoslav Republic of Macedonia
• ESEWD — East-Southeastward
• ATILO — Administrative Tribunal of the International Labour Organisation
• CRN — Crane
• BASE AMD — Base Arrival Manager Display
• NDI — Nondestructive Inspection
• IDENT — Identification
• IFO — International Field Office
• ILO — International Labour Organisation
• ASPW — Any Safe Port in the World
• LMM — Compass locator at the middle marker
• OH — Operational Handbook
• RMI — Radio Magnetic Indicator
• ADIS — Automatic dependent surveillance and Data Link Interim System
• C&A — Certification and Accreditation
• FLIDRAS — Flight Data Replay and Analysis System
• PTR — Program Technical Report
• IAASM — International Academy of Aviation and Space Medicine
• SNPA — Subnetwork Point of Attachment
• MAUW — Maximum All Up Weight
• AFO — Airport Field Office
• DOF — Date of Flight
• ITWS — Integrated Terminal Weather System
• STAC — Second Time Around Clutter
• CSS — Central Site System
• SRMDM — Safety Risk Management Memo
• AECB — Atomic Energy Control Board
• CWY — Clearway
• FSF — Flight Safety Foundation
• DEM — Digital Elevation Model
• HUM RES — Human Resources
• AEV — Annual Equivalent Value
• FIOT — Free In/Out and Trimmed
• HI FI SIM — High-Fidelity Simulator
• BSS — Best Signal Selection
• ICAO — International Civil Aviation Organisation
• AAH — Autonomous Aircraft Hybrid
• ACS — airspace control system
• GICB — Ground Initiated Comm B Protocol
• PABX — Private Automated Branch EXchange (company Phone System)
• EXTRM — Extreme

• DATAC — Digital Autonomous Terminal Access Communication
• HDWTS — Half Despatch Working Time Saved
• ECAR — European Civil Aviation Requirement
• SARP — Signal Automatic Radar Processing
• IMAL — Integrity Monitoring Alarm Limit
• LVB — Luchtverkeersbeveiliging
• ALPAP — Air Line Pilots Association of the Philippines
• ARINC 757 — Cockpit Voice Recorder
• FTS — Federal Telecommunications System
• ESDI — Enhanced Small-Device Interface
• RNAV — Random Navigation Area Navigation
• AMIS — Aircraft Management Information System
• SMPS — Sector Maintenance Processor Subsystem
• BN — Booking Note
• DEM — German mark
• FONSI — Finding of no significant impact. See Environmental impact statement (US)
• DRDF — Digital Readout Direction Finder
• CLT — Calculated Landing Time
• BANS — BRITE Alphanumeric System
• EL — Electro-Luminescent
• CPCS — Cabin Pressure Control System
• CEC — Commission of the European Communities ;
• APDSG — Airspace Planning & Development Sub-Group
• FRA — Flap Retraction Altitude
• VRB — Variable
• SWAP — Severe Weather Avoidance Program
• FIX — position in space usually on aircraft’s flight plan
• AASR — Aging Aircraft Safety Rule
• ARINC 742 — Design Guidance For Windshear Warning and Guidance Equipment
• IVSR — Interim Voice Switch Replacement Program
• ECPIC — Electronic Capital Planning Investment Control
• ABOVE DECK — On the deck
• ARINC 751 — Gate-Aircraft Terminal Environment Link - Aircraft Side
• EIU — Even If Used
• CNS/ATM-1 — Communication, Navigation and Surveillance / Air Traffic Management Package 1
• ATOS — Air Transportation Oversight System
• GRI — General Rate Increase
• JURG — Joint Users Requirements Group
• IAR — Intersection of Air Routes
• IRM — information resource management
• TCP / IP — Transmission Control Protocol / Internet Protocol
• AEGIS — Airborne Early Warning Ground Environment Integrated Segment
• DG — Directional Gyroscope
• AEREA — Association of European Research Establishments in Aeronautics
• ACRP — Airport Cooperative Research Program
• CRMCS — Central RADNET Monitoring and Control System
• MCK — Maintenance Check
• MET — Meteorological
• STWL — Stopway Lights
• ARINC 594 — Ground Proximity Warning System

• HSM — High Speed Modem
• BI — Both inclusive
• A — Aeroplane
• ADVY — Advisory
• RNP-10 — Required Navigation Performance
• HELIOPS — Helicopter Operations Panel
• RPC — Restoration Priority Code
• ATIS — Automatic Terminal Information Service
• IR — Ice on Runway
• BYD — Beyond
• FGS/C — Flight Guidance System/Computer
• APATSI — Airport / Air Traffic Systems Interface
• COMCO — Command Communications Outlet
• APA(CV) — Air Line Pilots Association (Cape Verde)
• COB — Closing of Business
• PFR — Probability of Failure Repair
• FPM — Feet Per Minute
• ADS-B — Automatic Dependent Surveillance-Broadcast
• SDP — Service Delivery Point
• SSM — Sign Status Matrix
• FHEX — Fridays/Holidays Excluded
• ATFMS — Air Traffic Flow Management System
• ADZD — Advised
• PTUL — Pilots Trade Union of Latvia
• ERSS — Eurocontrol Radar Surveillance Standard
• BASE — Cloud base
• BKN — Broken Sky (METAR Code)
• FMGS — Flight Management Guidance System
• EB — Eastbound
• DFGS/C — Digital Flight Guidance System/Computer
• CWAR — Continuous Wave Acquisition Radar
• ADSEL — Address Selective SSR System
• GDLP — Ground Data Link Processor
• FG — Fog Gun
• AIG — Accident Investigation & Prevention
• DER — Departure End of the Runway
• CEATS — Central European Air Traffic Services
• LIM — Limit
• AVSI — Aerospace Vehicle Systems Institute
• P — Procedure-Required Tuned NAVAID
• CARATS — Collaborative Actions for Renovation of Air Traffic Systems
• PIREP — Pilot Report
• IFE — In-Flight Emergency
• ASIAS — Aviation Safety Information Analysis and Sharing
• ARINC 528 — Airborne Tape Recorder
• AV — Avianca (Aerovias del Continente Americano) Colombian Airline
• ADL — Aeronautical Data-Link
• MALS — Medium-Intensity Approach Lighting System
• MTTRP — Mean Time to repair product
• MSDA — Material Safety Data Sheet

• DABS — Discrete Address Beacon System
• HUMS — Health and usage monitoring systems
• BRL — Building Restriction Line
• OFT — Outer Fix Time
• OK — Czech Airlines
• HS-DTS — High Speed Data Transmission System
• PA — Pan American Airways
• LRU — Line Replacement Unit
• AATT — Advanced Aviation Transportation Technology
• IGFET — Insulated Gate Field Effect Transistor
• CAEG — Computer-aided Engineering Graphics
• ASPM — Aviation System Performance Metrics
• OIG — Office of the Inspector General
• AOCI — Airport Operators Council International
• GPWS — Ground Proximity Warning System
• VG — Ground Velocity
• SBGP — State Block Grant Program
• HHMM — Hours and minutes
• BRM — Barometer
• NAT NAM — North Atlantic / North America
• FOQ — Free On Quay
• ARINC 585 — Electronic Chronometer System
• OMI — Organisation Maritime Internationale (French: International Maritime Organization; UN)
• ESCO — Executive Support and Coordination Office
• PROC — Procedure
• MTBR — Mean Time Between Replacement
• ATDS — Airborne Tactical Data Systems (USN)
• PALPA — Pakistan Air Line Pilots' Association
• CMA — Context Management Application
• MEA — Minimum Enroute Altitude
• EOF — Emergency Operating Facility
• ETVCT — En Route Training Voice Communication Tool
• JTIDS — Joint Tactical Information Distribution System (djay-tidz)
• ALRS — Alerting Service
• MODE C — Altitude Reporting Mode of Secondary Radar
• ALLA — Allied Long-Lines Agency
• GENOFIC — General North Sea Flight Information Centre
• CWP — Controller Working Position
• PCA — Propulsion Controlled Aircraft
• ETN — Electronic Telecommunications Network
• CFIT — Controlled Flight into Terrain
• APMS — Automated Performance Measurement System
• CUF — Cumuliform
• ACEP — Airport Capacity Enhancement Plan
• DF — Direction Finding or Finder
• ERIP — EAD Remote Interface Package
• RBDPE — Radar Beacon Data Processing Equipment
• DASI — Digital Altimeter Setting Indicator
• OWS — Owners
• EEC — Eurocontrol Experimental Centre

• ATCI — Airport ATC and Information systems
• VTOL — Vertical Takeoff And Landing
• FDE-ICD — Flight Data Entry - Interface Control Document
• TODAH — Take Off distance available, helicopter
• LAHSO — Land And Hold Short Operation
• JAI — Joint Acceptance Inspection
• CDD — Corporate Data Dictionary
• DTU — Data Terminating Unit
• DEL — Delete
• FEAST — First European ATCO Selection Test Package
• DP — Dewpoint Temperatue
• BRF — Brief
• DFDR — Digital Flight Data Recorder
• POS INIT — Position Initialization
• AFD — Airport Facility Directory
• ARINC 404A — Air Transport Equipment Cases And Racking
• BUNKERS — Name given for vessels Fuel and Diesel Oil supplies
• EXPLT — Extrapolate
• NAILS — National Airspace Integrated Logistics Support
• ARINC 750 — VHF Data Radio
• AAATS — Australian Advanced Air Traffic Services
• ATFMU — Air Traffic Flow Management Unit
• INM — Integrated Noise Model
• NAAQS — National Ambient Air Quality Standards (US)
• TWIP — Terminal Weather Information for Pilots
• OVC — Overcast (METAR Code)
• AFMT — Airway Facilities Management Team
• CSMC — Cyber Security Management Center
• IMPR — Improve
• AI — Application Interface
• LOS — Line-Oriented Simulation
• AT&T CSA — At&t Customer Support Associate
• ACCT — Accounting Records
• SHACC — SHAPE Airspace Coordination Centre
• SHL — Saville and Holdsworth Ltd
• IOSA — Iata Operational Safety Audit
• AACC — Airport Associations Co-ordinating Council
• ACL — Air Traffic Control Clearance
• DRK — Derrick
• GES — Ground Earth Station
• FPA — Focal Plane Array
• MIRACULIX — Multi Interface Radarformat Calculator and
• DA — Disbursement Account
• IAPL — IFPS APL Message
• MTCD — Medium Term Conflict Detection
• AAD — Assigned Altitude Deviation
• NPDU — Network Protocol Data Unit
• FDPS — Flight Data Processing System
• UHF — Ultrahigh Frequency
• LCGS — Low Cost Ground Surveillance Radar

• MTR — Military Training Route
• RTQC — Real Time Quality Control
• IFRB — International Frequency Registration Board of the International Telecommunication Union
• AWSS — Automated Weather Sensors System
• AO — Airlines Operator
• FRG — Federal Republic of Germany's
• ACDMD — Air Collaborative Decision Making Demonstrator
• EEI — Essential Elements of Information
• ARFF — Aircraft Rescue and Fire Fighting
• FSF IAS — Flight Safety Foundation International Aviation Safety
• ADREP — Aircraft Accident/Incident Data Reporting System
• ATMAS — Air Traffic Management Automated System
• CFP — Cold Front Passage
• SATCAS — Selenia Air Traffic Control Automated System
• AUTOVON — DoD Automatic Voice Network
• ISMLS — Interim Standard Microwave Landing System
• A/H — Altitude/Height
• CENRAP — Center Radar ARTS Presentation
• FPA — Flight Path Angle
• ARINC 600 — Air Transport Avionics Equipment Interfaces
• XPNDR — Transponder
• V&V — Validation & Verification
• CUP — Computer Utility Program
• ASAS — Aviation Safety Analysis System
• NRZI — Non Return to Zero Inverted magnetic tape bpi
• FDMA — Frequency Division Multiplex Access
• RSC — Rescue Sub Centre
• CNSP — Consolidated NOTAM System Processor
• ATCA — Air Traffic Control Association, Inc.
• ARINC 752 — TFTS Airborne Radio Sub-System
• CNS — Communication, Navigation and Surveillance Systems, Inc.
• ARINC 413A — Guidance For Aircraft Power Utilisation And Transient Protection
• RID — review item description
• LTOG — Long Term Objectives Groups
• CNDN — Canadian
• AFIS — Aerodrome Flight Information Service
• COP — Custom of Port
• TBS — To Be Supplied(by government)
• AVGAS — Aviation Gasoline
• FAST — Final Approach Spacing Tool
• CLKWS — Clockwise
• EFPM — Extended Flight Plan Message
• NADIN — National Airspace Data Interchange Network
• FLCH — Flight Level Change
• AOA — Airport Operations Area
• DVOR — Doppler Very High Frequency Omni Directional Range
• EGT — Exhaust Gas Temperature
• AP — Airport Protection
• ARTCC — Air Route Traffic Control Centre
• RAPPI — Radar Access Plan Position

• LOW — Last Open Water
• LORAN — Long Range Navigational System
• AIM — Aeronautical Information Management
• ESRI — Environmental Systems Research Institute (developer of geographic information systems (GIS) software, Redlands, California)
• AWOS — Automated Weather Observing System
• AVHRR — Advanced Very High-Resolution Radiometer
• UTC — Universal Time Coordinate
• IGP — Ionospheric Grid Points
• LAYCAN — Layday Cancelling Date
• SMT — station management (protocol)
• PDAR — Preferential Arrival And Departure Route
• A/L — Anti-ice
• A/G — Air/Ground
• FIFO — Flight Inspection Field Office(s)
• APM — approach path monitor
• ALPA-SA — Air Line Pilots Association - South Africa
• RCP — Radio Control Panel
• ONC — Operational Navigation Chart
• CMSA — Carrier Sense Multiple Access
• CTSKLS — Catskills
• B/C — Benefit/Cost
• VNO — Maximum structural cruising speed
• SATCOM — Satellite Communication
• NCD — No Computed Data
• ATAS — Airspace and Traffic Advisory Service
• FAN — False Alarm Normaliser
• LDR — Labor Distribution Reporting
• LRR — Long Range Radar or Low Cost Radar
• SSR MODE S — Selective Address SSR
• SNDCF — Subnetwork Dependent Convergence Facility
• ALF — Aloft
• VC — Design Cruising Speed
• NATMC — NATO Air Traffic Management Committee
• AFFREIGHTMENT — The hiring of a ship in whole or part
• GO — Gas Oil
• OAG — Official Airline Guide
• MALPA — Mauritius Air Line Pilots Association
• BA — Barometric Altitude
• NGA — National Geospatial-Intelligence Agency (formerly National Imagery and Mapping Agency; US government)
• EXTD — Extend
• PREV — Previous
• CASOR — Civil Area Services Operations Room
• ARINC 414 — General Guidance For Equipment And Installation Engineers
• FPCP — Flight Path Control Point
• ETO — Estimated Time Over
• LDB — Limited Data Block
• IFPS — Integrated Initial Flight Plan Processing System
• FWDD — Fresh Water Departure Draft
• SRZ — Special Rules Zone
• SVVP — Software Verification and Validation Plan

• CMIC — Civil-Military Interface Standing Committee
• ARINC 577 — Audible Warning System
• EARTS — En Route Automated Radar Tracking System
• ASTA — Airport Surface Traffic Automation
• HDG SEL — Heading Select
• CHI — Computer-Human Interface
• NCB — National Cargo Bureau
• FDFMG — Flight Data and Flow Management Group
• N1 — Gas generator speed
• ASR-WSP — Airport Surveillance Radar-Weather System Processor
• SEMP — Software Engineering Management Plan
• EATCHIP — European Air Traffic Control Harmonisation and Integration Programme
• ARST — Arresting specify aircraft arresting
• IU — If Used
• EFL — Entry Flight Level
• ASI — Aviation Safety Inspector
• DEBRIEF — Debriefing
• FHINC — Fridays/Holidays Included
• ISASI — International Society of Air Safety Investigators
• EATMS — European Air Traffic Management System
• ARINC 748 — Communications Management Unit
• FIP — Facility Improvement Program
• CPF — Central Processing Facility
• DABBS — DITCO Automated Bulletin Board System
• DPNG — Deepening
• FDC — Flight Data Company
• VOT — VOR airborne equipment test facility
• MTOM — Maximum Take-Off Mass
• IAR — Investment Analysis Report
• ACFS — Advanced Concepts Flight Simulator
• ADTN — Administrative Data Transmission Network
• OTR — Oceanic Transition Route
• CUPS — Consolidated Uniform Payroll System
• NBAA — National Business Aircraft Association
• CR(A)OC — Central Region (Air) Operations Centre
• ALO — Air Force Liaison Officer
• BTC — Basic Training Course
• CWBS — Contract Work Breakdown Structure
• AFM — Affirmative Fair Housing Marketing
• ATSU — Air Traffic Services Unit
• DFI — Direction Finding Indicator
• DFTI — Distance-from-Touchdown Indicator
• AFIS — Automated Flight Inspection System
• ESERN — East-Southeastern
• TYP — Aircraft Type
• MSK — Minimum Shift Keying
• CTAM — Climb to and Maintain
• EOPF — Electronic Official Personnel File
• FAC — Fast as can
• CFEP — Communications Front End Processor

• GFDI — GNSS Fault Detection and Isolation
• TMC — Traffic Management Coordinator
• CAST — Certification Authority Software Team
• ASDE — Area Surveillance Detection Equipment
• NSE — Navigation System Error
• COC — Combat Operations Centre
• RPL — Repetitive Flight Plan
• SVCBL — Serviceable
• TROP — Tropopause
• FRNG — Firing
• AP — Airport Plaza
• HV — Transavia Airlines CV
• MBST — Microburst
• DOI — Department Of Industry
• ALCM — Air Launched Cruise Missile
• FIS-B — Flight Information Services - Broadcast
• GEOREF — Geographical reference
• FEW — Few
• CPL — Customer Priority Listing
• E-MSAW — En Route Automated Minimum Safe Altitude Warning
• ADTN2000 — Administrative Data Transmission Network 2000
• AJT — Terminal Service, Air Traffic Organization
• ROC — Regional Operations Center (NATO)
• ARO — Air Traffic Service Reporting Office
• PTT — Press to Talk
• RCLS — Runway Centerline Lighting System
• MTW — Mountain Waves
• IGCN — Independent Ground Communications Network
• FMU — Flow Management Unit
• ATN — Aeronautical Telecommunications Network
• ASN — Advance Shipment Notice
• ABAFT — Toward the rear of the ship
• A/G — Air-Ground
• C/S — Call Sign
• EXP — Expect
• AERA — Automated En Route Air
• AEE — FAA Office of Environment and Energy
• OMEGA — Very Low Radio Navigation System
• SRQ — Slot Request
• HHMMSS — hour-hour / minute-minute / second-second
• IFOG — Interferometric Fiber Optic Gyroscope
• IFL — Intermediate Flight Level
• LS — Lumpsum Freight
• DOI — United States Department of Interior
• CFCS — Central Flow Control Service
• CYTA — Cyprus Telecommunications Authority
• ASC — Aviation Safety Council
• DFS — Detailed Functional Specification
• AFM — Aeroplane Flight Manual
• EDS — Enterprise Database System

• DFRT — Deadfreight
• FIG — Flight Inspection Group
• PAA — Plot Accuracy Analysis
• HIDE — Harmonised, Integrated Development Environment
• INIT — Initial
• EATMP — The European Air Traffic Management Programme
• IABA — International Association of Aircraft Brokers and Agents
• RTC — Radio Transmission Control
• RMMC — Remote Maintenance Monitoring and Control
• SUMI — Software Usability Measurement Inventory
• ANM — ATFM Notification Message
• FTS2000 — Federal Telecommunications System 2000
• FEATS — Future European Air Traffic System
• CEAS — Class E Airspace
• GMU — GPS (Height) Monitoring Unit
• NEXRAD — Next Generation Weather Radar
• WND — Wind
• FDEP — Flight Data Entry and Printout
• ATTIS — AT&T Information Systems
• OPADD — Operating Procedures for AIS Dynamic Data
• CMFO — Certificate Management Field Office
• FWCS — Flight Watch Control Station
• FBO — fixed base operator
• CAOFA — Co-ordination of Air Operations in the Forward Area
• FFM — Free Flight Mode
• FPD — Flight Plan Database
• ITU WARC-95 — International Telecommunication Union World Radio Conference
• FLAS — Flight Level Allocation System
• FPPU — Flight Planning and Flight Progress Updating
• HEL — Helicopter
• AEX — Automated Execution
• EVAS — EATMS Validation Strategy
• AJA — Acquisition & Business Services, Air Traffic Organization
• CRCO — Central Route Charges Office
• ERIDS — En Route Information Display System
• AWPA — Australian Women Pilots' Association
• NARACS — National Radio Communications System
• FAX — Facsimile Equipment
• APN — apron
• 8.33 STATE — A State initially implementing 8.33 kHz channel spacing
• IRVR — Instrument Runway Visual Range
• IUHTAUTC — If Used, Half Time Actually To Count
• SFPL — System Flight Plan Processing
• EX GDR — ex German Democratic Republic
• SIGMET — Significant Meteorological Information
• ATCCC — Air Traffic Control Command Center
• IAM — Institute of Aviation Medicine
• DACT — Dissimilar Air Combat Training
• ACDAC — Asociacion Colombiana de Aviadores Civiles
• DUATS — Direct User Access Terminal System

• ADSIM — Airfield Delay Simulation Model
• CAMI — Civil Aerospace Medical Institute
• AODR — Authorizing Official Designated Representative
• CCIF — Comit? Consultatif International Des Communications T?l?phoniques ? Grande Distance (French For International Telephone Consultative Committee
• EUROCONTROL — European Organisation for the Safety of Air Navigation
• DADC — Digital Air Data Computer
• ATR — Air Traffic Requirements
• ARINC 406A — Airborne Electronic Equipment
• MTAC — Multiple Time Around Clutter
• PAAST — Pan American Aviation Safety Team
• TMG — Tourig Motor Glider
• LYR — Layer
• FLTCK — Flight Check
• MB — Merchant Broker
• DITS — Digital Information Transfer System
• RAPCO — Radar Approach Control
• CBFT — Cubic Feet
• HBN — Hazard Beacon
• AS — Airspeed
• MAA — maximum authorized IFR altitude
• EFC — Expected Further Clearance
• 1 :M — One-to-Many relationship
• ASECNA — Agence pour la Securité de la Navigation en Afrique et à Madagascar
• ADVO — Administrative Voice
• TSRV — Transport System Research Vehicle
• HF — Human Factors
• FLDS — Flight Loads Data System
• MSAW — Minimum Safe Altitude Warning
• CP — charter-party
• CRNA — Centre Régional de la Navigation Aérienne
• 3D — Palair Macedonian
• DDA — Dedicated Digital Access
• CAIRS — Cable Assignment Information Retrieval System
• FERS — Facility and Equipment Reporting System
• DMR — Data Modification Request
• D&D — Distress and Diversion
• ARR — Arrival
• AIC — Aeronautical Information Circular
• IHST — International Helicopter Safety Team
• FSD TF — Functional Specification Development Task Force
• FME — Force Majeure Excepted
• IPPC — Internet Pilot Planning Centre
• SUPSIS — Supervisor
• MTA — Military Training Area
• OSA — Operational Safety Assessment
• 4D-NAV — 4D Navigation
• OBST — Obstacle
• MODIS — moderate-resolution imaging spectrometer (NASA/GSFC)
• EVS — Enhanced Visual System
• MNCC — Multinational Coordination Centre

• DEPA — Departure Airfield
• IMAWP — Initial Missed Approach Waypoint
• AAC — Aeronautical Administration Communication
• FRH — Fly Runway Heading
• TDO — Tornado
• FDE — Flight Data Entry
• MAX CRZ — Maximum Engine Thrust for Two-Engine Cruise
• ADAP — Airport Development Aid Program
• FDA — Flight Data Analysis
• WRNG — Warning
• FALPA — Fiji Air Line Pilots Association
• TVE — Total Vertical Error
• ASCII — American Standard Code for Interface and Interchange
• TO NL — Takeoff Engine Fan Speed
• FAF — Final Approach Fixes
• FPF — Flight Plan Fallback
• REACT — Rain Echo Attenuation Compensation Technique
• TAU — Range / Range rate
• PRP — Pulse Repetition Period
• IRCAS — Intranet Radio Coverage Analysis System
• TWT — Travelling Wave Tube
• CAMA — Civil Aviation Medical Association
• FIRE — Fire Station
• LCTD — Located
• INBD — Inbound
• ATOMS — Air Traffic Operations Management System
• UAP — User Application Profile
• PD — Profile Descent
• WHO — World Health Organisation
• CRT — Cargo Retention Clauses
• EDDA — Environmental Due Diligence Audit
• CRM — Crew Research Management
• ANPAC — Associazione Nazionale Piloti Aviazione Commerciale
• FCLT — Freeze Calculated Landing Time
• VTR — Variable Takeoff Rating
• TDM — Total Delay in Minutes
• ADDA — Administrative Data
• PCN — Project Control Number
• SESMA — Special Event Search and Master Analysis
• ALPA — Airlines Pilots Association
• EFDP — European flight data processing(Eurocontrol)
• ARSC — Air Rescue Sub Centre
• ACPO — Aircraft Position Operator
• FMA — Flight Mode Annunciator
• CEI — Cabin Equipment Interfaces
• ATTCS — Automatic Takeoff Thrust Control Systems
• ALPA-SL — Air Line Pilots Association of Slovenia
• TARE — Telegraphic Automatic Relay Equipment
• LCG — Load Classification Group
• HAC — Hughes Aircraft Company

• IFFITAF — IFPS-DBE Functional Interface System Task-Force
• ELNGT — Elongate
• RMNDR — Reminder
• ATFMP — Air Traffic Flow Management Position
• OSH — Open Shelter Deck
• CEW — Civil Engineering Works
• SHAPE — Supreme Headquarters Allied Powers Europe (NATO)
• HWP — Holding Waypoint
• PANS — Procedures for Air Navigational Services
• GDE — Ground Delay Enhancements
• STCA — Short Term Conflict Alert
• AICS — Aircraft Inventory and Charter System
• DOM — Domestic
• TOPL — Take Off Performance Limits
• ACM — Acceptable Means of Compliance
• COBALT — Common Objective Alignment Team
• ARAC — Aviation Rulemaking Advisory Committee (FAA)
• MCDU — Multifunction Control Display Unit
• TKE — TrackAngle Error
• OATS — Orbit and Attitude Tracking
• AID — Airport Information Desk
• ALRS — Approach Lighting System
• CTA/FIR — Control Area/Flight Information Region
• FDESP — Free Despatch
• ACH — Air traffic control Flight Plan Change
• ANSA — International Advisory Group Air Navigation Services
• NAVAID — Navigational Aid
• ACC-PC — ACC Planning Controller
• AFRAA — African Airlines Association
• LIH — Light Intensity High
• CPL — Commercial Pilots License
• CTU — Cabin Telecommunications Unit
• CASTLE — Consolidated Automated System for Time and Labor Entry
• FI — Iceland Air
• AES — Airborne Earth Station
• AWAS — Automated Weather Advisory Station
• BA — Budget Analyst
• MAX CLB — Maximum Engine Thrust for Two-Engine Climb
• ARSA — Airport Radar Serve Area
• AAC — Mike Monroney Aeronautical Center
• CDR — Cost Detail Report
• ELR — Extra Long Range
• TLA — Title Line Area
• GTPAPC — Grupo Tecnico de Pilotos Aviadores Profesionales de Cuba
• LNAV — Lateral Navigation
• AORTF — ATM Added Functionality Operational Requirements Task Force
• NB — NorthBound
• ACO — Airspace Co-ordination Order
• CAMI — Civil Aeromedical Institute
• PMA — Parts Manufacturer Approval

• ACT — William J. Hughes Technical Center
• FILTIM — Date and Time Stamp of original Message
• AST — FAA Office of Commercial Space Transportation
• AJC — Communications Services, Air Traffic Organization
• CEAC — Committee of European Airspace Co-ordination
• FIAO — Flight Inspection Area Office
• ATPL — Air Transport Pilot Licence
• CAPSIN — CAA Packet Switched Integrated Network
• EBAA — European Business Aviation Association
• GF — Gulf Air Company - Bahrain
• AACI — Airports Association Council International
• COTP — Connection-Oriented Transport Protocol
• HDOT — Inertial Vertical Speed
• CESAR — Course Evaluation Sheets Analysis and Reporting
• CAN — Committee on Aircraft Noise
• MRVA — Minimum Radar Vector Altitude
• GSB — Good Safe Berth
• ACCC — Australian Competition Consumer Commission
• DGB — Dangerous Goods Board
• ANGB — Air National Guard Base
• AWX — All Weather Fighter
• HURCN — Hurricane
• IFATSEA — International Federation of Air Traffic Safety Electronic Associations
• AVPAC — aviation VHF packet communications
• ATCEUC — Air Traffic Controllers European Unions Coordination
• AOC — Aircraft Operating Company
• KECU — Thousands of European Currency Units
• P&H — Press and Hold
• ADI — Automatic De-Ice and Inhibitor
• ATCC — Air Traffic Control Centre
• OIS — OGE Input Simulator
• IAOPA — International Council of Aircraft Owner and Pilot Associations
• CFMU — Central Flow Management Unit
• LRNAV — Long Range Navigation
• ILSP — Integrated Logistics Support Plan/Program
• BTL — Between layers
• CAAF — Civil Aviation Authority of Fiji
• FPM — Flight Path Monitor
• ALR — IFALPA's Airport Liaison Representative Program
• PSDN — Public Switched Data Network
• TWG — Training Working Group
• LO — Low
• IDAT — Interfacility Data
• SFAR-38 — Special Federal Aviation Regulation 38
• CANSO — Civil Air Navigation Services Organisation
• AIRCOM — Aircraft Communications
• HID — Host Interface Display
• ACTF — Aeronautical Charting Task Force
• IRD — Initial Requirements Document
• SLOP — Strategic Lateral Offset Procedure

• ADIN — AUTODIN Service
• CESA — Class E Surface Area
• AFSFO — AFS Field Office
• WXR — Weather Radar
• ATCU — Air Traffic Control Unit
• AUX — Auxilliary
• APB — APATSI Project Board
• LDAH — Landing Distance Available Helicopter
• 8.33 CP — 8.33 Contact Person
• FOD — Foreign Object Debris
• ADEP — Aerodrome of Departure
• METAR — Meteorological Aerodrome Report
• CRE — Class Rating Examiner
• BROKERAGE — Percentage of freight payable to broker
• RAPNET — Regional ATC Packet switched Network
• COBLDN — Closing of Business London
• AUSEP — Australian RNAV Separation Standards
• TCAS — Traffic Alert and Collision Avoidance System
• AOI — Area of Operational Interest; TERPS Office (USAF)
• SOPA — Standard Operating Procedure Amplified
• NYPE — New York Produce Exchange
• AAFCE — Allied Air Forces Central Europe
• AOPTF — Aerodrome Operations Task Force
• ACC-TC — ACC Tactical Controller
• NMCS — Network Monitoring and Control System
• GRD — Geared
• ETG — Enhanced Target Generator
• CPMIS — Consolidated Personnel Management Information System
• OUNS — Operational Navigation System
• UAC — Upper Area Control
• NTAP — Notice to Airman Publication
• AFAS — Aircraft in the Future ATM System
• FIAT — First Installed Article Test
• AMSS — Aeronautical Mobile Satellite System
• SFOR — UN Stabilisation Force (in Bosnia And Herzegovina)
• IAF — Initial Approach Fixes
• AEROSAT — Aeronautical Satellite Council
• ISPS — International Ships and Port Security system
• CWS — Collision Warning System
• AOR-W — Atlantic Ocean Region West
• VAP — Visual Aids Panel
• SUC — Start-Up Controller
• VOM — Volt-ohm-milliammeter
• IFPZ — Integrated Initial Flight Plan Processing System Zone
• DCD — Double Channel Duplex
• AFZ — Resource Management
• FDE — Flight Data Exchange
• ADO — IFALPA Aircraft Design & Operation Committee
• BARS — Behaviour Anchored Rating Scales
• SSFDR — Solid-State Flight Data Recorder

• NCW — Non Conformance Warning
• ACA — Austrian Cockpit Association
• CMPL — complete
• CATCO — Chief ATC Operations
• APP — Approach Control
• VAQ — VHF Avionics Qualification
• WTC — Wake Turbulence Category
• RGS — Remote Ground Station
• DISCH — Discharge
• CFDS — Central Flight Data Suite
• LECT — Lecture
• SAMS — special-use airspace management system
• SS — Sunset
• MEB — Main Earthing Bar
• VSO — Stalling Speed in the Landing Configuration
• SF — Special Freighter
• CMMC — Common Maintenance Monitoring and Control
• FPI — Fluorescent Penetrate Inspection
• HIS — Horizontal Situation Indicator
• HATR — Hazardous Air Traffic Report
• IACA — International Air Carrier Association
• FSTS — Federal Secure Telephone Service
• ALPA-A — Air Line Pilots Association of Armenia
• DDC — Data Display Console
• LFP — Low Pass Filter
• AHR — FAA Office of Human Resources
• YSAS — Yaw Stability Augmentation System
• ABET — Airspace Behavioral Engineering Technology
• AVON — AUTOVON Service
• ADS-C — Automatic Data Surveillance Contract
• TUI — Trade Unions International of Transport Workers
• DO — Diesel Oil
• ST&E — Security Test and Evaluations
• TRK — Track
• ARN-1 (TABLE) — Basic ATS Route Network in the Lower and Upper Airspace
• ACIPLA — Asociacian Civil de Pilotos de Lineas Aereas
• AWY — Airway
• BARTCC — Berlin Air Route Traffic Control Centre
• ACRPWG — Aircraft Crash Recovery Procedures Working Group
• ELWRT — Electrowriter
• OFZ — Obstacle Free Zone
• SSALS — Simplified Short Approach Lighting Systerm
• EUR — Region European Region
• ATCA — Air Traffic Controllers Association
• FHA — Functional Hazard Assessment
• ESCAT — Emergency Security Control of Air Traffic
• MASS — Maintenance Automation System Software
• ARNG — Arrange
• ACE — Allied Command Europe's
• FPPS — Flight Plan Processing System

• AOPG — Aerodrome Operations Planning Group
• ATCRU — Air Traffic Control Radar Unit
• BM — Beam, Maximum
• ATNP — Aeronautical Telecommunications Network Panel
• DBRITE — Digital Bright Radar Indicator Tower Equipment
• FAL — Facilitation of International Air Transport
• VSAT — Very Small Aperture Satellite Terminal
• CLSD — Closed
• RDVS — Rapid Deployment Voice Switch
• CDA — Continuous Descent Arrival
• JSSI — Joint Safety Strategy Initiative
• EVFR — Electronic Visual Flight Rules
• HDF — High frequency direction-finding station
• IACS — INTERGRAPH Aeronautical Charting System
• EARTS — Enroute Automated Radar Tracking System
• EMPS — En Route Maintenance Processor System
• CTAF — Common Traffic Advisory Frequency
• PROB — probability
• HFDL — High Frequency Data Link
• BSU — Beam Steering Unit
• CAO — Computer Assisted Operations
• AND — Associate Administrator for NAS Development
• FMG — Frequency Management Group
• VU — Utility Speed
• PCB&T — Personnel Compensation Benefits and Travel
• ARINC 569 — Heading and Altitude Sensor
• AOIS — Aeronautical Operational Information System
• BRKHIC — Breaks in Higher Overcast
• EASA — European Aviation Safety Authority
• DEV — Deviation
• GDCA — General Directorate for Civil Aviation
• PRQ — Pilot Request
• MUDPIE — Multiple User Data Processing Interactive Environment
• DSCN — Direct Speech Circuit Networks
• XPD — ATC Transponder
• FREE OUT — Free of discharge costs to owners
• ISSM — Information Systems Security Manager
• AOF — Allocation of Functions
• EATCHIP LO — EATCHIP Liaison Officer
• HFSG — Human Factors Study Group
• GLONASS — Global Orbiting Navigation Satellite System, Russia
• EFIS — Electronic Flight Instrument System
• ALA — Alighting Area
• APM — Accident Prevention Manual
• GIB — Global Navigation Satellite System Integrity Broadcast
• VDP — Visual Descent Point
• AOCP — Airborne Operational Computer Programme
• EIU — Electronic Interface Unit
• LISREL — Linear Structural Relations
• CAR — Caribbean Region

• FLOWSIM — Traffic Flow Planning Simulation
• DSUA — Dynamic Special - Use Airspace
• ANC — Alternate Network Connectivity
• MDA/H — Minimum Descent Altitude/Height
• DCAA — Dual Call, Automatic Answer Device
• HCP — Hard Copy Printer
• HARS — High Altitude Route System
• AUTOB — Automatic Weather Reporting System
• BRITE — Bright Radar Indicator Tower Equipment
• BT — berth terms
• WINDR — Wind Direction
• CDU — Control and Display Unit
• ANPP — Air Navigation Plan Publication
• AGATE — Advanced General Aviation Transport Experiments (NASA)
• FISC — Flight Information Services Communications
• EFC — Expect Further Clearance
• VBX — Visual Basic Extensions
• MTRAQ — Multi track quality
• REA — Ready Message
• ALD — Airlift Division
• LCL — Less Container Loaded
• ANT — Air Navigation Team
• GASAG — Global Aviation Security Action Group
• ARINC 592 — Airborne Passenger Tape Record
• EPSU — European Public Service Union
• AIR 4653 — Aerospace Information Report 4653
• DIR/INTC — Direct Intercept
• ALCC — Airlift Central Co-ordination Centre
• ATREP — Air Traffic Representative
• MCDU — Multipurpose Control Display Unit
• VMAX — Basic Clean Aircraft Maximum CAS
• POCC — Pacific Operations Control Center
• ALPA-E — Air Line Pilots Association of Ethiopia
• RSA — Runway Safety Area
• CIE — International Commission on Illumination
• CPAR — Cockpit Personnel Association of Russia
• WSFO — Weather Service Forecast Office
• AAA — Airport Airspace Analysis
• FDSU — Flight Data Storage Unit
• AUW — All Up Weight
• FSAS — Flight Service Automation System
• SSRBRIGH — Highlight set code to target
• CSM — Consultant Services Meeting
• V/STOL — Vertical or Short Take-Off and Landing
• MMPI — Minnesota Multiphase Personality Inventory
• AIPA — Aeronautical Information Production Application
• SSAP SELECTOR — Session Service Selector
• CIMO — Committee for Instruments and Methods of Observation
• II — Interrogator Identity
• CFL — Cleared Flight Level

• DAC — Direction Aviation Civile
• GRAF — Ground Replay and Analysis Facility
• ERR — Error message
• AIREP — Air-Report
• JPDO — Joint Planning and Development Office's
• AEEC — Airlines Electronic Engineering Committee (ARINC)
• TKX — Crosstell Tracker
• ATIS — Aerodrome Terminal Information Service
• SOF — Stand-alone Operations Facility
• RNLAF — Royal Netherlands Air Force (also KLu)
• ATIC — Administrative and Technical Inspection Committee
• EQUATOR — Environment for Qualitative Temporal Reasoning
• ANSEP — Air Navigation Services Economics Panel
• TDA — Track Detection Analysis
• SUR — Surveillance
• ASRS — Aviation Safety Reporting System
• FNPT — Flight & Navigation Procedures Trainer
• KB — Kilo Bytes (1,000 Bytes)
• EHD — Danger Area
• NAT MWG — North Atlantic Mathematicians Working Group
• EGALPA — Egyptian Air Line Pilots Association
• EWT — EATMS Working Team
• IFPL — Individual Flight Plan Message
• RIMS — Runway Incursion Monitoring System
• ZFW — Zero Fuel Weight
• FHA — Functional Hazard Analysis
• ACFO — Aircraft Certification Field Office
• CATCAS — Copenhagen Air Traffic Control Automated System
• ADS-P — Automatic Dependent Surveillance-Panel
• HCAA — Hellenic Civil Aviation Authority
• ASPENN RPG — Aeronautical Fixed Service Planning Study EUR/NAM/NAT Regional Planning Group
• FKFE — Forum Komunikasi Flight Engineers
• FFAS — Free Flight Airspace
• RE — Resident Engineer
• RCL — Runway Centreline Lighting
• DPA — Distinguishing Path Attribute
• NAT SPG — North Atlantic Systems Planning Group
• ATSS — Airway Transportation Systems Specialist
• TEMPO — Temporary
• USOAP — Universal Safety Oversight Audit Program
• MAP — Missed APproach
• CLB — Climb Detent of the Thrust Levers
• COSP — Connection-Oriented Session Protocol
• CMIS — Common Management Information System
• EATCHIP OCD — Operational Concept Document
• EBUS — Enhanced Backup Surveillance
• WXXM — Weather eXchange Model
• ARU — Airspace Reservation Unit
• EFPS — External Front Processing System
• ALPA-S — Air Line Pilots Association - Singapore

• IAFP — Individual ATC Flight Plan Proposal
• AIRMET — Airmen's Meteorological Information
• VFE — Flaps Extended Placard Speed
• FPFS — First Planned First Served
• IFPPS — Integrated Flight Plan Processing System
• ALO — Aviation Logistics Organization
• IFATCA — International Federation of Air Traffic Controllers' Associations
• IAAE — International Association of Airport Executives
• DOD — Department of Defence
• CR — Course to a VOR Radial
• CEFA — Co-operation for Environmentally Friendly Aviation
• MTWA — Maximum Takeoff Weight Authorized
• CEF — Capacity Enhancement Function
• FSFO — Flight Standards Field Office
• CAAC — Civil Aviation Administration of China
• FIS-B — Flight Information Service - Broadcast
• MMAC — Mike Monroney Aeronautical Center
• VFXR(R) — Flap Retraction Speed
• FISDL — Flight Information Services Data Link
• CPA — Chairman's program assessment; closest point of approach
• AFS — Automatic Flight System
• ACH — ATC Flight Plan Change
• GNSSP — Global Navigation Satellite System Panel
• ELD — Electrical Load Database
• DOD MIL — Department of Defence - military
• IAL — Instrument Approach and Landing
• CIWS — CORRIDOR INTEGRATED WEATHER SYSTEM
• OCS — Oceanic Control System
• FMIS — FTS2000 Management Information System
• FMS — Flight management system
• CGAS — Coast Guard Air Station
• FSDPS — Flight Service Data Processing System
• 5-STRSSG — 5-States Route Structure Steering Group
• HO — Hold Over
• PATWAS — Pilot's Automatic Telephone Weather Answering Service
• TARMAC — Taxi and Ramp Management and Control
• IІSLS — Improved Interrogation Side Lobe Suppression
• SAFI — Semi-Automatic Flight Inspection
• D — Danger Area
• EGERIA — Engineering Group for European Integration ATC
• SANE — Skill Acquisition Network
• FO(IFO) — Fuel Oil/Intermediate FO
• CVFR — Controlled Visual Flight Rules
• AISS — Aeronautical Information Server System
• ITEB — Information Technology Executive Board
• MIDO — Manufacturing Inspection District Office
• BUECE — Back-up Emergency Communications Equipment
• CRI — Class Rating Instructor
• CCCH — Central Computer Complex Host
• EIF — Extended Interface Function

• FPM — Flight Progress Message
• AEM — Airports & Environment Management
• CUST — Customs
• GRADE — Graphical Airspace Design Environment
• HAA — Height Above Airport
• SNPL — Syndicat National des Pilotes de Ligne
• ALPA-INT — Air Line Pilots Association - International
• AJS — Safety Services, Air Traffic Organization
• WSPD — Wind Speed
• DE-TO NL — Derated Takeoff Engine Fan Speed
• ARINC 569 — Airborne Distance Measuring Equipment
• LYCN — Layday Cancelling Date
• AIRMET — Air Meteorological Information Report which may affect the safety of low-level aircraft operations
• NBCAP — National Beacon Code Allocation Plan
• AFCNF — Air Force Central NOTAM Facility
• MDH — Minimum Descent Height
• ER TC — En-Route Tactical Controller
• ADMA — Aviation Distributors and Manufactureres Association
• GGCS — Ground/Ground Communication System
• ALPA-K — Air Line Pilots Association of Korea
• CESC — Chief Executive Standing Conference
• SURVITE — Surveillance Integrated Tested for EATMS
• DFL — Dynamic Flight Leg
• DDU — Display Drive Unit
• DOP — Daily Operations Plan
• AIDS TO NAVIGATION — Artificial objects to supplement natural landmarks indicating safe and unsafe waters
• ATCSQ — ATC Safety Questionnaire
• ANT — Airspace and Navigation Team
• AAFG — ATM Added Functionality Sub-Group
• JAL — Japan Air Lines
• OCC — Operations control center
• 4DTN — 4D Trajectory Negotiation
• FPPS — Federal Personnel Payroll System
• DBCRC — Defense Base Closure & Realignment Commission
• A/T — autothrottle
• FFAC — From Facility
• MCSG — Military Committee Staff Group
• RSAP — Runway Safety Action Plan
• EGNOSS — European Geostationary Navigation System Overlay
• AOC — Aeronautical Operational Communications
• LFV — Luftfartsverket
• MT — Mertic Tonne
• FSSA — Flight Service Station Automated Service
• NATCO — National Communications Switching Center
• ACP — Accept Message
• ARINC 741P4 — Aviation Satellite Communications System:Part 4 - Specification and Description Language
• FAR — Federation Aviation Regulations
• ASPLAB — Asociacion Sindical de Pilotos del Lloyd Aereo (Bolivia)
• FPP — Flight Plan Processing
• ERNP — European Radio Navigation Plan

• MLD — Military Liaison Division
• AIRC — Aeronautical Information and Control
• VC — Vereinigung Cockpit
• NOPT — No Procedure Turn Required
• DAIR — Direct Altitude and Identity Readout
• AFC — Airport Facilities Control
• CATSIM — CAA Air Traffic Simulator
• AP — Airport Patrol
• CASTA — Controller Associate for Strategic and Technical Advice
• AFN — air traffic services facilities notification
• ABET — Airspace Behavioural Engineering Technology
• SDIS — Switched Digital Integrated Service
• ANSIR — Advanced Navigation System Inertial Reference
• AOC — Aeronautical Operation Control
• FIO — Flight Information Office
• CBM — Cubic Metres
• LCN — Local Communications Network
• VPAE — Vertical Profile Angle Error
• SNET — Safety Nets
• CAWU — Civil Aviations Workers Union
• AMPL — Association Marocaine de Pilots de Ligne
• ECAC AREA — European Civil Aviation Conference Area
• TRA — Thrust Reduction Altitude
• EADTF — European AIS Database Task Force
• APPR — Approach
• PIREPS — electronic pilot reports
• BASOP — Military Base Operations
• LRCO — Limited Remote Communications Outlet
• AIM-FANS — Airbus Interoperable Modular FANS
• BIMCO — The Baltic and International Maritime Council
• PZ — Portotroz
• ARM — FAA Office of Rulemaking
• ICAAS — Integrated Control in Avionics for Air Superiority
• CES — Central and Eastern European States
• SCAT-1 — Special Category 1
• CASI — CFMU Aircraft Situation Image
• FREER — Free Route Experimental Encounter Resolution
• NGATM — New Generation Air Traffic Manager
• AFP — Area Forecast Panel
• HKALPA — Hong Kong Air Line Pilots Association
• CRAF — Central Reservation Airspace Facility
• MBPS — Mega Bits per second
• GMCC — General National Airspace System Maintenance Control Center
• REAL — Real time
• VREF — Approach Reference speed
• IFPA — Instrument Flight Procedures Automation Program
• IFFN — Identification Friend, Foe or Neutral
• HIPS — Highly Interactive Problem Solver
• IN.HG. — inches of mercury
• FIC — Flight Information Centre

• DACS — Digital Aeronautical Chart Supplement
• ATFR — Air Traffic Flow Regulator
• AACE — Airfield Approach Control Element
• GOMS — Goals, Operators, Methods, Selection model
• ARN-2 (TABLE) — Radio Navigation Aids Associated with the Basic ATS Route Network Terminal Area and Instrument Approach Procedures
• ERAD — En Route Broadband Radar
• APANPIRG — Asia/Pacific Air Navigation Planning and Implementation Regional Group
• AIRPAC — Advisor for the Intelligent Resolution of Predicted Aircraft
• PCATD — Personal Computer-Based Aviation Training Device
• AIRNET — Airport Network Simulation Model
• EHF — Extremely High Frequencies
• MTCDR — Medium-Term Conflict Detection and Resolution
• ARM — Airspace Risk Model
• EPS — Engineered Performance Standards
• DORA — Directorate Operational Research and Analysis
• GNE — Gross Navigational Error
• SRTM — Shuttle Radar Topography Mission
• BECA — Belgium Cockpit Association
• VTN — Voice Telecommunications Network
• DEMETER — Distance Measuring Equipment Tracer
• FMS — Fathoms
• ARINC 595 — Barometric Altitude Rate Computer
• CMU — Communications Management Unit
• TTALPA — Trinidad & Tobago Airline Pilots' Association
• ARS — Aeronautical Radio Navigation Service
• FCU — Flight Control Unit
• CEATS LSG — Central European Air Traffic Services Legal Sub Group
• AIRSPACE — and Traffic Management
• EFL — Estimated Flight Level
• AIMS — Aircraft Information Management System
• DDP — Distributed Data Processing
• CDFA — Constant Descent Final Approach
• FCM — Flight Confirmation Message
• APPLA — Associacao Pilotos Portugueses Linha Aerea
• FQIS — Fuel Quantity Indicating System
• FAPM — FTS2000 Associate Program Manager
• IAC — International Advisory Committee
• CEATS UAC — Central European Air Traffic Services Upper Airspace Control Centre
• HKAOA — Hong Kong Aircrew Officers Association
• ERD — End Routing Domain
• TOGA — Takeoff/Go-Around
• ISAD — ICAO's Incorporating Security into Aircraft Design Working Group
• PFAST — Passive Final Approach Spacing Tool
• MIDAS — Man-Machine Integration Design and Analysis System
• CALS — Computer-aided Acquisition and Logistic Support
• ENAV — En Route Navigational Aids
• ARINC 307 — Aircraft Integrated Data System Wire Bundle Provisions
• ACOD — Area Conflict Detection
• CFWP — Central Flow Weather Processor
• SBT — Scenario-Based Training

• SICTA — Italian Consortium for the Applied ATM Research
• ERV — ECM Resistant Voice
• GNLS — GNSS Navigation and Landing System
• GEORGIAN ALPA — Georgian Air Line Pilots Association
• ETOPS — Extended Range Twin-Engine Operations
• LIALPA — Leeward Islands Air Line Pilots' Association
• EUROCAE — European Organisation for Civil Aviation Equipment
• WAAS — Wide Area Augmentation System
• 4-MAST — 4-MAST group
• ALPL — Association Luxembourgeoise des Pilotes de Ligne
• ALSEC — All Sectors
• ACI-NA — Airports Council International-North America
• ALPA — Asociacion de Pilotos de Lineas Aereas
• SIE — Standard Interface Equipment
• DPDG — Diplomatic and Protocol Drafting Group
• DDB — Dynamic Database Browser
• TSG — Training Sub-Group
• EWA — Error Warning Area
• XMT — Excluding
• AMOSA — Association of Aviation Maintenance Organisations of Southern Africa
• AASA — Air Lines Association of Southern Africa
• AUTODIN — DoD Automatic Digital Network
• AOU — Aircraft Operator Unit
• NCF — National Control Facility
• COSYNUS — AIRBUS Training Database
• POL STAT — Policy Statement
• LOF — Lloyds Open Form
• RTSE — Reliable Transfer Service Element
• CARAT — Center for Aviation Research and Aerospace Technology
• FDMAS — Flight Data Management Automated System
• GFM — Government Furnished Materials
• NP — Propeller speed
• ESA — Eastern Service Area
• BIT(E) — Built-ln-Test (Equipment)
• DET — Detention
• TARA — Terminal Area RNAV Applications Task Force
• AGI — FAA Office of Government and Industry Affairs
• RDPS — Radar Data Processing System
• WPP — Working Position Processor
• DSG — Data Services Group
• EPMB — EASIE Programme Management Board
• RATCF — Radar Air Traffic Control Facility
• AZ — Aerodrome zone
• DARC — Direct Access Radar Channel
• HIPERLAN — High Performance Local Area Network
• FDMD — Flight Data Management and Distribution
• FOG — For Our Guidance