toggle menu

Home / Governmental & Military / Aviation

Governmental & Military >> Aviation Abbreviations

Look through 4999 acronyms and abbreviations related to Aviation:

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

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

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

• CTR — Center
• A/D CONVERTER — Analogue-to Digital Converter
• HMI — Hazardously Misleading Information
• DH — Decision Height
• EGA — Enhanced Graphics Adapter
• AGW — All Going Well
• CDC — Computer Display Channel
• ARPA — Advanced Research Projects Agency (made early internet)
• BW — Bandwidth
• Q.23 — Signalling system for PABX
• X-WIND — Cross Wind
• TTL — Transistor-Transistor Logic
• IDP — Individual Development Plan
• FL — Flight Level
• QOS — Quality of Service
• B/L — Bill of Lading
• CM — Configuration Management
• LVL — Level
• RNP — Required Navigation Performance
• N — North
• Q PROCEDURE — Procedure to identify replacement flight plans
• QMS — Quality Management System
• CM — Centimeter
• FAR — Federal Acquisition Regulation
• WX — Weather
• BA FAIR — Braking action Fair
• DOP — Dropping Outward Pilot
• ETS — Estimated Time of Sailing
• DEC — Digital Equipment Corporation
• GA — General Aviation
• W — White
• PDF — Portable Document Format (created by Adobe Acrobat)
• ATD — Actual Time of Departure
• AIXM — Aeronautical Information Exchange Model
• IWL — Institute Warranty Limits
• CLD — Cloud
• EBCDIC — Extended Binary Coded Decimal Interchange Code (pronounced Eb-see-dik) (cf. BCD)
• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• LSD — Lashed Secured Dunnaged
• NI — Network Interface
• CDL — Configuration Deviation List
• ARINC 422 — Guidance For Modification Status Indicators & Avionics Service Bulletins
• ND — Navigation Display
• SOP — Standard Operational Procedure
• ATLA — Air Transport Licensing Authority
• NOV — November
• SV — Space Vehicle
• PF — Pilot Flying
• FLT — Flight
• CTRL — Control

• NAS — National Airspace System
• A/A — Air-to-Air
• MLW — Maximum Landing Weight
• ATC — Air traffic control
• ADV — Advise
• ALP — Airport Layout Plan
• C102 (TSO) — Helicopter Radar Approach, Issued 04/02/84
• RFQ — Request For Quote
• IFB — Invitation For Bid
• CNEE — Consignee
• OPS — Operations
• MCE — Management Centre Europe
• TM — Traffic Management
• COD — Cash On Delivery
• FT — Feet
• FF — Fuel Flow
• IR — Iran Air
• CW — Clockwise
• V — Velocity
• PFD — Primary Flight Display
• AT — Air Traffic
• DK — Deck
• S-SUP — Sector Supervisor
• ASD — Aircraft Situation Display
• FOB — Free On Board
• D.O.T — Department of Transport
• CCU — Central Control Unit
• HDLC — High-Level Data Link Control
• KAEPA — Kuwait Aircraft Engineers and Pilots Association
• FIS — Flight Information Service
• CAF — Currency Adjustment Factor
• DDP — Delivered Duty Paid
• JAN — January
• ADC — Air Defense Command
• ACN — Aircraft Classification Number
• RM — Risk Management
• FMC — Flight Management Computer
• MSL — Mean Sea Level
• MDA — Minimum Descent Altitude
• GS — Glide Slope
• ATCRBS — Air Traffic Control Radar Beacon System
• AE — Application Entity
• WP — Work Package
• ALT — Altitude
• CKD — Completely Knocked Down
• LOB — Line Of Business
• GPS — Global Positioning System (ex-NAVSTAR)
• W — West
• CIP — Carriage and Insurance Paid to
• XECM — Cancel Executive Controller Message

• CAT — Clear Air Turbulence
• LEO — Low Earth Orbit (satellite communications)
• GCU — Generator Control Unit
• BA NIL — Braking Action Nil
• XBAR — Crossbar
• BA POOR — Braking Action Poor
• LADGPS — Local Area Differential Global Positioning System
• VHF — Very High Frequency
• DE — Germany
• MTBF — Mean Time Before Failure
• PAQ — Position Analysis Questionnaire
• PM — Preventive Maintenance
• AOCS — Attitude and Orbit Control System
• B — Blue
• CW — Carrier Wave
• N/A — Not Applicable
• ADF — Automatic Direction Finder
• PCB — printed circuit board
• LF — Low Frequency
• DHDWTSBE — Despatch Half Demurrage on Working Time Saved Both Ends
• AC — Air Canada
• IAEA — International Atomic Energy Agency
• NOTAM — Notice to Airmen
• D-ATSU — A Downstream Air Traffic Services Unit
• TCA — Terminal Control Area
• LAT — Latitude
• X-BAND — The frequency range between 8000 and 12500 MHz
• EW — Eurowings
• T-ATSU — Transferring ATS Unit
• CAVOK — Ceiling And Visibility OK (Kav-okay)
• EPA — Environmental Protection Agency (US)
• CW — Continuous Wave
• NM — Nautical Mile
• DEA — Drug Enforcement Agency
• LF — Load Factor
• DA — Decision Altitude
• OBTEX — Offboard Targeting Experiments
• XCOORD — Cancel Co-ordination
• CRS — Course
• BTWN — Between
• TBA — To Be Advised
• MCW — Modulated Continuous Wave
• FOUO — For Official Use Only
• DEQ — Delivered Ex Quay (shipping)
• PMS — Performance Management System
• BM — Beam
• D-OTIS — Data Link Operational Terminal Information Service
• MODEM — Modulator-Demodulator
• IF — Intermediate Frequency
• IR — Islamic Republic of Iran

• HF — High Frequency
• NAS — National Aircraft Standard
• BSS 1/1 — Basis 1 Port to 1 Port
• W — Watt
• NTSB — US National Transportation Safety Board
• FCL — Full Container Load
• TBD — To Be Determined
• UA — Ukraine
• SWIM — System Wide Information Management
• EXEC — Execute
• CPDLC — Controller Pilot Data Link Communications
• SUA — Special-Use Airspace
• SMS — Safety Management Systems
• GUI — Graphical User Interface (goo-ey)
• RTLS — Return To Launch Site
• NESDIS — National Environmental Satellite, Data, and Information Service
• TMA — Traffic Management Advisor
• EADI — Electronic Attitude Director Indicator
• FAS — Free Alongside Ship
• SH — Showers
• PACOTS — Pacific Organised Track System
• APAPI — Abbreviated Precision Approach Path Indicator
• PRF — Pulse Repetition Frequency
• SVC — Service
• IF — Intermediate Fix
• GFE — Government-Furnished Equipment
• MCT — Maximum Continuous Thrust
• WG — Working Group
• NCS — National Communications System
• DES — Delivered Ex Ship
• M:M — Many-to-Many Relationship
• ACT — Active
• BRK — Break
• ITF — International Transport Workers' Federation
• W/MOD — With Modification of Vertical Profile
• MHZ — Megahertz (Megacycles Per Second)
• THR — Thrust
• D-TO NL — Derated Takeoff Engine Fan Speed
• UL — Uplink
• VAFORIT — VAFOR Implementation
• GE — Georgia
• O-QAR — Optical Quick Access Recorder
• W/STEP — With Step Change in Altitude
• OCT — October
• XLTR — Translater
• B/CRS — Back Course
• MCP — Mode Control Panel
• PDN — Public Data Network
• ECAC — European Civil Aviation Conference
• DVOF — Digital Vertical Obstruction File

• CPS — Central Processing System
• F&CM — Flow And Capacity Management
• AEW — Airborne Early Warning
• IMF — International Monetary Fund
• LOA — Length Overall
• R-CHANNEL — Random Access Channel
• INFO — Information
• MRC — Monthly Recurring Charge
• CRM — Cockpit Resource Management
• LORAN — Long-Range Aid to Navigation
• MM — Middle Marker
• WO — Without
• FA — Final Approach
• EU — European Union (1994; formerly referred to as the EEC or EC)
• T-CHANNEL — Time Division Multiple-Access Channel
• C/N0 — Carrier-to-Noise-Density Ratio
• ACK — Acknowledge (telecommunications; Cf. NAK)
• COS — Chief of Staff
• AFCAC — African Civil Aviation Commission
• XASM — Cancel Assume
• AFSS — Automated Flight Service Station
• FRB — Failure Review Board
• CBI — Computer Based Instruction
• ARINC 753 — HF Data Link System
• STAB — Stabilizer
• BL — Bale
• EMS — Environmental Management Systems
• AMSL — Above Mean Sea Level
• AFB — Air Force Base (USAF)
• CBT — Computer Based Training
• AD — Aerodrome
• LIDO — Lufthansa Integrated Dispatch Operation
• DOLSP — Dropping Off Last Sea Pilot
• DIA — Denver International Airport
• NPV — Net Present Value {economics}
• RDIF — Radar Data Interchange Format
• TK — Turkish Airlines
• TAS — True Airspeed
• TBO — Time Between Overhaul
• STOL — Short Takeoff And Landing
• CAB — Civil Aeronautics Board
• FSS — Flight Service Station
• M-ADS — Modified Automatic Dependent Surveillance
• P,R,D AREA — Prohibited, Restricted, or Danger Area
• WT — Weight
• SVID — System V Interface Definition
• FTE — Full Time Equivalent
• DDS — Digital Data Service
• ANG — Air National Guard
• XCONF — Delete CONFlict

• COTR — Contracting Officer Technical Representative
• L — Left
• XAP — Crossing Alternate Proposal Message
• PHA — Preliminary Hazard Analysis
• VSCF — Variable-Speed Constant Frequency
• BL — Blowing (METAR descriptor)
• K — Kilo-
• M — Manual
• MOLCHOPT — More or Less Charterers Option
• SSB — Single Side Band
• DAARWIN — Distributed ATM Architecture based on
• NOR — Notice of Readiness
• C — Close
• CRT — Cathode Ray Tube (type of TV)
• RDP — Radar Data Processing
• BOC — Bell Operating Company
• ARINC 542 — Airborne Oscillograph Flight Data Recorder
• ANS — Answer
• A/C — Aircraft
• CQD — Customary Quick Despatch
• SAC — Strategic Air Command
• FANS — Future Air Navigation System
• APA — Allied Pilots Association
• RMP — Radio Management Panel
• FZFG — Freezing Fog
• C/S/S/N — Capacity/Safety/Security/Noise
• SHF — Super High Frequency
• FDR — Flight Data Recorder
• ACU — Antenna Control Unit
• APR — April River Airport, April River, Papua New Guinea
• AUTOVON — Automatic Voice Network
• FOT — Free On Truck
• RSVN — Reservation
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• V/TRK — Vertical Track
• FOIA — Freedom of Information Act
• CIP — Capital Investment Plan
• FDD — Freight Demurrage Deadfreight
• M/ASI — Mach/Airspeed Indicator
• CMO — Certificate Management Office
• ARTCC — Air Route Traffic Control Center
• ARINC 424 — Navigation System Data Base
• P… — Prohibited Area
• FIM — Fault Isolation Manual
• BAF — Bunker Adjustment Factor
• ACI — Airports Council International
• XBRIGHT — Cancel highlighting
• DOD — United States Department of Defense
• SBIR — Small Business Innovation Research
• HADAMARD — Multi-radar processing written in ADA

• AMT — Aviation Maintenance Technician
• MOD — Modified
• RIB — Routing Information Base
• SAW — Surface Acoustic Wave
• DES — Descent
• GA — General Average
• OCA — Oceanic Control Area
• ALS — approach lighting system
• BA — Braking Action
• ISDN — Integrated Services Digital Network
• CDM — Collaborative Decision Making
• P.T.T — Push-to-Talk
• RFC — Request For Change
• GPO — Government Printing Office
• PCT — Percent
• DRAM — Dynamic Random Access Memory (dee-ram) (computing)
• CONUS — Continental United States (48 Contiguous States and DC)
• DAFIF — Digital Aeronautical Flight Information File
• EPR — Engine Pressure Ratio
• TOP — Cloud Top
• RATCC — Radar Air Traffic Control Center
• ANA — All Nippon Airways
• DDD — Detailed Design Document
• PMS — Program Management System
• BOD — Beneficial Occupancy Date
• DSS — Decision Support System
• DBS — Direct Broadcast Satellite
• TURB — Turbulence
• ADIRS — Air Data Inertial Reference System
• FAASTEAM — FAA Safety Team
• COOP — Continuity of Operations
• ALQDS — All Quadrants
• XGEO — Cancel GEO
• JAA AMC — JAA Acceptable Means of Compliance
• AOB — Air Order of Battle
• RTE — Route
• OSI — Open Systems Interconnection (iso Standard)
• AED — Automated external defibrillator
• A/D — Analog-to-Digital
• MOCA — Minimum Obstruction Clearance Altitude
• AT — Air Transport
• DIS — Distance
• PFI — Private Finance Initiative
• FY — Fiscal Year
• EBU — Engine Build Unit
• FAQ — Frequently Asked Questions (sometimes Pronounced Fak)
• JAAC/JAA CE — JAA Committee
• SIP — State Implementation Plan
• IMPACT — Information Market Policy Actions
• NTE — Not-To-Exceed

• SESAR — Single European Sky ATM Research
• CAVU — Ceiling And Visibility Unlimited
• CFI — Certified Flight Instructor
• OL — Operating Location
• CON — Continuous
• RAD — Radial
• R,E&D — Research, Engineering and Development
• SP — Space
• RPI — Real Property Inventory
• HOV — High Occupancy Vehicle
• I(FD) — MTI Improvement Factor
• OPT — Optimum
• PMS — Pavement Management System
• DA/H — decision altitude/height
• P.ACCS — Pairs of ACCs
• BIM — Building Information Model
• CFR — Code of Federal Regulations
• AUG — August
• R-ATSU — The Receiving Air Traffic Services Unit
• HW — High Water
• NEC — National Electric Code
• MDT — Mean Down Time
• BPS — bits per second
• IA — Inspection Authorization
• PPI — Plan Position Indicator
• LOI — Letter Of Intent
• PSTN — Public Switched Telephone Network
• CDI — Course Deviation Indicator
• AFSPS — Arrival First Sea Pilot Station
• XOFF/PDR — Cancel Off Predetermined Route
• RAARR — Radar Arrival
• GDP — Ground Delay Program
• DFDAU — Digital Flight Data Acquisition Unit
• MCA — Minimum Crossing Altitude
• UT — Universal Time
• PIREP — Pilot (weather) Report
• ARINC 747 — Flight Data Recorder
• CR — Current Rate
• C/N — Carrier-To-Noise Ratio
• AC — Advisory Circular
• ILS — Instituteument Landing System
• TOR — terms of reference (ICAO/FAA)
• IRU — Inertial Reference Unit
• RCM — Requirements Correlation Matrix
• MIN — Minimum
• TRU — True
• ANC — Air Navigation Commission
• HALS / DTOP — High Approach Landing System / Displaced Threshold Operations
• HAZMAT — Hazardous Material
• MEL — Minimum Equipment List

• MRA — Minimum Reception Altitude
• ALSF1 — ALS with Sequenced Flashers I
• XMITR — Transmitter
• FAACIS — FAA Communications Information System
• NOAA — National Oceanic and Atmospheric Administration (US)
• TC/OC — Technical Control and Operational Control
• FRA — Federal Railroad Administration
• MTTR — Mean Time To Repair
• QAE — Quality Assurance Evaluator
• DEST — Destination
• JAARC — JAA Research Committee
• AWB — Air Waybill
• IA-5 — International Alphabet Number 5
• SAS — Scandinavian Airlines System
• RAD — Radio
• LABSC — LABS GS-200 Computer
• FPL — Full Performance Level
• GSA — U.S. General Services Administration
• AC — Altocumulus
• FR — From
• XNSSR — Exit NSSR
• SAAFEA — South African Airways Flight Engineers Association
• XFR — Transfer
• LIDAR — Lander Light Detection and Ranging
• PT — Product Team
• BCA — Benefit/Cost Analysis
• ITU — International Telecommunication Union
• MN — Magnetic North
• CAA — Civil Aviation Authority
• TCU — Towering Cumulus
• ASTERIX — All-purpose Structured Eurocontrol Radar Information Exchange
• TSU — Technical Support Unit
• DID — direct inward dial
• FIFO — First In, First Out
• ATO — Air Traffic Organization
• FI — Flight Instructor
• LABSR — LABS Remote Equipment
• WMO — World Meteorological Organisation
• MBO — Management by Objective
• NSSL — National Severe Storms Laboratory
• OMB — Office of Management and Budget (U.S.)
• EXTRAP — Extrapolate
• DOS — Disk Operating System
• AO — Authorizing Official
• NAAPE — National Association of Aircraft Pilots and Engineers
• FSM — Flight Schedule Monitor
• I — Italy
• AS — Altostratus
• PRE-OJT — Pre-On-the-Job Training
• ARP — Aerodrome Reference Point

• HIRO — High Intensity Runway Operation
• HAT — Height Above Touchdown
• SES — Single European Sky
• QAR — Quick Access Recorder
• ALSF-2 — High Intensity Approach Lighting Systerm with Sequenced Flashing Lights.
• VCMAX — Active Maximum Control Speed
• PROF — Profile
• PFA — Probability of False Alarm
• HZ — cycles per second (hertz)
• FFA — Functional Failure Analysis
• CFR — Cost and Freight
• MPO — Metropolitan Planning Organization
• I/AFSS — International AFSS
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• PDC — Pre-Departure Clearance
• XFRQ — Cancel FreQuency message
• QP — Quality Plan
• DFAX — Digital Facsimile
• SQL — Structured Query Language
• PRI — Primary Rate Interface (ISDN)
• SOW — Statement Of Work
• XHOLD — Cancel Hold
• TN — True North
• XIFL — Cancel Intermediate Flight Level
• IA/CC — Indirect Access/Common Control
• DZ — Algeria
• FTE — Flight Technical Error
• PIC — Pilot In Command
• LABSW — LABS Switch System
• DGAC — Direction Générale de l’Aviation Civile
• A&P — Airframe & Powerplant
• SCADA — Supervisory Control And Data Aquisition
• CONS — consumption
• LGTD — Lighted
• SNR — Signal-to-Noise Ratio
• MOLOO — More or Less Owners Option
• ASI — Air Speed Indicator
• DBE — Disadvantaged Business Enterprise
• MDD — Meteorological Data Distribution
• XEXPLT — Cancel Extrapolation
• ADCCP — Advanced Data Communications Control Procedures
• XFDM — Cancel FDM
• ACFT — Aircraft
• DTM — Digital Terrain Model
• CFDS — Centralised Fault Display System
• OU — Croatia Airlines
• JAAB/JAA-B — Joint Boards
• ARINC 743A — GPS/GLONASS Sensor
• LED — law enforcement desk; light emitting diode
• IA — International Alphabet

• DIST — Distance
• AIR — Aircraft Certification Service
• DMA — direct memory access (computer term)
• COA — Contract Of Affreightment
• COACP — Contract Of Affreightment Charter Party
• CCITT — Comite Consultatif International de Telegraphique et Telephonique (International Telegraph and Telephone Consultative Committee) [now ITU-T]
• ECMT — European Conference of Ministers of Transport
• NEPA — National Energy Policy Act of 1992
• IMC — Instrument Meteorological Conditions
• GUI — Graphic-User Interface
• DEA — Data Exchange Agreement
• AM — AeroMexico
• LOFT — Line-Oriented Flight Training
• IBM — International Business Machines Corporation
• CISO — Chief Information Security Officer
• RDF — Radio Direction Finder
• HDD — Head Down Display
• IPT — Integrated Product Team
• COGSA — U.S. Carriage of Goods by Sea Act
• BTN — Between
• NAVDB — Navigation Data Base
• A/P — Autopilot
• YD — Yaw Damper
• FYG — For Your Guidance
• NOSIG — No Significant Change
• WBC — Weight and Balance Computer
• PAMPLAY — PAM rePLAY system
• JALPA — Jamaica Air Line Pilots Association
• ADF — Automatic Direction Finding
• PKI — Public Key Infrastructure (cryptography)
• ADDS — Aviation Digital Data Service
• IRS — Inertial Reference System
• PDR — Preferential Departure Route
• LDAP — Lightweight Directory Access Protocol (pronounced Ell-dap)
• VBFNG(HI) — High speed CAS at N g's to buffet onset
• DML — Data Manipulation Language
• LT — Long Ton
• AOR — Area of Responsibility. The assigned area to any given unit.
• SAT — Static Air Temperature
• RAES — Royal Aeronautical Society
• RTCA — Radio Technical Commission for Aeronautics
• ATZ — Aerodrome Traffic Zone
• FANOMOS — Flight track and Aircraft NOise Monitoring System
• AA — Always Afloat
• CDT — Controlled Departure Time
• ARTS — Automated Radar Terminal System
• FDEDANRSAOCLONL — Freight Deemed Earned, Discountless And Non-Returnable Ship And Or Cargo Lost Or Not Lost
• HIWAS — Hazardous Inflight Weather Advisory Service
• VSP — Vertical Speed
• PQP — Project Quality Plan

• COTS — Commercial Off the Shelf Software
• MAX — Maximum
• ANCA — Airport Noise and Capacity Act
• ASMA — Aerospace Medical Association
• DDE — Dynamic Data Exchange (in software parlance)
• HALPA — Hellenic Air Line Pilots Association
• RNG — Range
• SGL — Signal
• NMB — National Mediation Board
• QPSK — aeronautical quadrature phase shift keying
• EPROM — Erasable Programmable Read-Only Memory
• DR — Drifting (METAR descriptor)
• SAE — Society of Automotive Engineers
• D — Derated
• ARINC — Aeronautical Radio Incorporated
• GCA — Ground-controlled approach
• SDR — Service Difficulty Report
• PCM — Pulse-Code Modulation
• TCAS — Traffic Collision Avoidance System
• CIF — Cost, Insurance, Freight
• DR — Dead Reckoning
• LSA — Lysergic Acid Amide
• GBAS — Ground Based Augmentation System
• CDB — Corporate Database
• ADDENDUM — Additional chartering terms at the end of a charter party
• AMVER — Automated Mutual-Assistance Vessel Rescue system
• OO — SkyWest Airlines
• ATE — Automatic Test Engineer
• MTTF — Mean Time To Failure
• RAIM — Receiver Autonomous Integrity Monitoring
• KARLDAP — Karlsruhe Automatic Data Processing and Display System
• LW — Low Water
• CLR — Clear
• PRM — Precision Runway Monitor
• KBS — Knowledge-Based System
• GNP — gross national product (economics)
• CARSR — Common Air Route Surveillance Radar
• PDPR — Per Day Pro Rata
• CST — Centistoke
• WAYPOINT — Position in space usually on aircraft's flight plan
• FLAS — Flight Level Allocation Scheme
• ANSP — Air Navigation Service Provider
• LTIOV — Latest Time Information of Value
• AT&T — American Telephone and Telegraph (U.S. company, also known as "Ma Bell")
• CAS — Calibrated Air Speed
• HQ — Headquarters (HDQ Preferred)
• FCC — Federal Communications Commission (US)
• HZ — Haze (METAR Code)
• IMDG — International Maritime Dangerous Goods
• ATAG — Air Transport Action Group

• NAVSAT — Navigation Satellite
• VDF — Very high frequency Direction Finding station
• EHF — Extremely High Frequency
• VNAV — Vertical Navigation
• EEG — Electro-EncephaloGram
• ARINC 572 — Mark 2 Air Traffic Control Transponder
• HP — Holding Pattern
• CAA PNG — Civil Aviation Authority of Papua New Guinea
• ATA — Actual Time of Arrival
• ATDNSHINC — Any Time Day/Night Sundays and Holidays Included
• VSWR — Voltage Standing Wave Ratio
• ECAM — Electronic Centralized Aircraft Monitor
• HIRTA — High Intensity Radio Transmission Area
• FACF — Final Approach Course Fix
• MAN — Manual
• ADIZ — Air Defense Identification Zone
• EFB — Electronic Flight Bag
• HBARO — Barometric Altitude
• MIPS — Millions of Instructions Per Second
• CZ — Czech Republic
• PBX — Private Branch eXchange (company phone system)
• ELBA — Emergency Locator Beacon Aircraft
• FDP — Flight Data Processing
• MMR — Multi-Mode Receiver
• PVD — Plan View Display
• TTY — Teletype Telex Machine
• VBFNG(LO) — Low speed CAS at N g's to buffet onset
• AQP — Advanced Qualification Program
• RD — Requirements Document
• OTV — Orbital Transfer Vehicle
• RCR — Runway Condition Reading
• ACAIS — Air Carrier Activity Information System
• NORDO — No-Radio
• CDTI — Cockpit display of traffic information
• XEU — European Currency Unit
• IFR — Instrument Flight Rules
• TMC — Thrust Management Computer
• SSTS — Space Surveillance and Tracking System
• STAR — Standard Terminal Arrival Route
• VBF(LO) — Flaps up minimum buffet speed at current maneuver load factor minus altitude dependent variable
• Z — Zulu (Greenwich mean time)
• ARINC 557 — Airborne Voice Recorder
• OJT — On the Job Training
• DGNSS — Differential Global Navigation Satellite System
• FZRA — Freezing Rain (METAR Code)
• ARINC 610 — Guidance For Design and Integration of Aircraft Avionics Equipment In Simulators, Supplement 1
• EAPTU — Air Line Pilots Trade Union
• CRDA — Converging Runway Display Aid
• FZDZ — Freezing Drizzle
• AILS — Automatic Instrument Landing System

• MIT — Massachusetts Institute of Technology (U.S.)
• ARINC 746 — Cabin Communications System, Supplement
• QF — Quality Factor
• ARINC 542A — Digital Flight Data Recorder
• POS — Position
• ARINC 571 — Inertial Reference System
• ACPT — Accept
• C — Centigrade
• ENG — Engine
• ABV — Above
• DCA — Defensive Counter Air
• IMA — Integrated Modular Avionics
• KHZ — kilohertz (1000 cycles per second)
• DBMS — Data Base Management System
• RTS — Return To Service
• CI — China Airlines - Taiwan
• CMC — Central Maintenance Computer
• CG — Center of Gravity (DXS)
• MNM — Minimum
• BRI — Basic Rate Interface
• OPM — Office of Personnel Management
• TGT — Target
• FRT — Freight
• FIOS — Free In/Out Stowed
• 2D — Two-Dimensional
• VCRI — Verification Cross Reference Index
• SGS 85 — Sovietic Geodetic System
• GW — Gross Weight
• DNRCAOSLONL — Discountless and Non-Returnable Cargo and/or Ship Lost or Not Lost
• CASS — Continuing Analysis and Surveillance System
• ACID — Aircraft Identification
• DRP — Disaster Recovery Plan
• MAG — Magnetic
• DMN — Data Multiplexing Network
• GEN — General Motors
• WTSPT — Waterspout
• WSO — Weather Service Office
• UN — United Narions
• TBC — The Boeing Company
• DA — Descent Advisor
• QDR — Reciprocal Magnetic Bearing
• PUP — Principal User Processor (NEXRAD)
• DTED — Digital Terrain Elevation Data (dee-ted)
• DNIC — Data Network Identification Code
• IDS — Intrusion Detection System
• PVC — Permanent Virtual Circuit (ATM)
• MK — Republic of Macedonia
• M/V — Merchant Vessel
• IPV6 — Internet Protocol Version 6
• CIT — Compressor Inlet Temperature

• AEWPD — Adapted EATM Work Programme Document
• CASE — computer-automated software engineering
• BOB — Bunker On Board
• BCR — Benefit/Cost Ratio
• FIW — Free in wagon
• BDI — Both Dates Inclusive
• MVFR — Marginal Visual Flight Rules
• LCN — Load Classification Number
• 16PF — Sixteen Personality Factor Questionnaire
• EST — Estimated Starting Time
• IS — Iceland
• CAA SI — Civil Aviation Authority of Solomon Islands
• VRS — Voice Response System
• CRF — Central Repair Facility
• PABX — private automatic branch exchange (telephone)
• WO — World Airways, Inc
• CAT — Computer Aided Testing
• ARINC 603 — Airborne Computer Data Loader
• BRG — Bearing
• ACDO — Air Carrier District Office
• MIRL — Medium Intensity Runway Lights
• FBO — Fixed-Based Operator
• DAMFORDET — Damages for Detention
• EANPG — Regional European Air Navigation Planning Group
• LT — Liner Terms
• DMU — Data Management Unit
• ASCP — Aviation System Capacity Plan
• DOS — United States Department of State
• FAC — Facilities
• TLS — Target Level of Safety
• AFFSC (E) — Air Forces Flight Safety Committee (Europe)
• FDOD — CFMU – Flight Data Operations Division
• EU-OPS — EASA Operations Regulations
• GLD — Glider
• C87A — Low Range Radar Altimeters, Issued 01/01
• LOA — Letter Of Agreement
• DHS — Department of Human Services
• DABRK — Daybreak
• ARINC 419 — Digital Data System Compendium
• GMT — Greenwich Mean Time (Zulu)
• C91A — Emergency Locator Transmitter, Issued 04/85
• ARINC 597 — Aircraft Communications Addressing And Reporting System
• AIRNAV — Airports and Navigation Aids Database System
• BAF — Belgian Air Force
• IMG — Immigration
• TDOP — Time Dilution of Precision
• CY — Cyprus Airways Ltd
• AAGDI — Automated Air Ground Data Interchange
• ACARS — Aircraft Communications Addressing and Reporting System
• FACUTL — Facility Utilization System

• PTH — Path
• FDP/RDP — Flight Data Processing/Radar Data Processing
• DEM — Demurrage
• MTBCF — Mean Time Between Critical Failures
• BSC — Binary Synchronous Communication
• PII — Personally Identifiable Information
• FAP — Final Approach Point
• LATA — Local Access and Transport Area
• VMIN — Basic Clean Aircraft Minimum CAS
• FE — Flight Examiner
• PT — Total Pressure
• EXER — Exercise
• UPU — Universal Postal Union
• NASA — National Aeronautics and Space Administration (US)
• AP — Autopilot
• SS 30 — 30 Minutes after Sunset
• AWACS — Airborne Warning And Control System
• AHL — Australian Hold Ladders
• RISC — Reduced Instruction Set Computer
• NP — Network Protocol
• TSTMS — Thunderstorms
• LY — El Al Israel Airlines
• HGT — Height
• VTS — Vessel Traffic Service
• PRN — Pseudo-Random Noise
• GML — Geography Markup Language
• EAD SGR — EAD Sub-Group
• KW — Kilowatt (one thousand watts) (measurement)
• ARINC 579 — Airborne VOR Receiver
• AIRS — Advanced Infrared Sounder
• VTOL — Vertical Take-Off & Landing
• RP — Restoration Priority
• FMGC — Flight Management Guidance Computer
• NLA — New Large Aircraft
• ISA — International Standard Atmosphere
• ARINC 601 — Control/Display Interfaces
• DLP — Data Link Processor
• GHZ — Gigahertz
• DSPY — Display
• CPD — Charterers Pay Dues
• RA — Resolution Advisory
• O&M — Operation and Maintenance
• ELINT — Electronic Intelligence Satellite
• AO — Aircraft Operator
• FCC — Flight Control Computer
• EIA — Extended Interaction Amplifier
• AVG — Average Voltage Gain
• AIFSS — Automated International Flight Service Station
• MAR — March
• ABM — Abeam

• ATUTC — Actual Times Used to Count
• SASKI — Name of an ATS Route reporting point
• CROB — Cargo Remaining on Board
• XM — External Master
• IATA — International Air Transport Association
• ERDF — European Regional Development Fund
• T — Time
• EFAS — En Route Flight Advisory Service
• GOES — Geostationary Operational Environmental Satellite
• EAMG SSG — EAMG Systems Sub-Group
• SO — Southern Airways
• A&E — Architecture and Engineering
• FEC — Forward Error Correction
• ICASM — International Congress of Aviation and Space Medicine
• ACF — Area Control Facility
• ELT — Emergency Locator Transmitter
• AIMS — Airplane Information Management System
• RLLS — Runway Lead-In Light System
• FSP — Flight Strip Printer
• EG — Egypt
• FQR — Formal Qualification Review
• BY — Belarus
• IFPZ — IFPS Zone
• LB — Local Battery
• SDLC — Software development life cycle
• INS — Inertial Navigation System
• TDMA — Time Division Multiple Access
• CAA NZ — Civil Aviation Authority of New Zealand
• BBB — Before Breaking Bulk
• 5LNC — Five Letter Name Code
• TT — Total Temperature
• NRZ — Non-Return-To-Zero
• ARINC 559A — Mark 2 Airborne HF SSB/AM System
• RAPPI — Random Access Plan-Position Indicator
• MMU — Memory Management Unit
• ADM — Aeronautical Decision Making
• GPRA — Government Performance and Results Act
• AAIB — Air Accident Investigation Branch
• AAP — Advanced Automation Program
• TDD — Time Division Duplex
• PFN — Pulse-Forming-Network
• NSSFC — National Severe Storms Forecast Center
• NIMA — National Imagery and Mapping Agency (became National Geospatial-Intelligence Agency|NGA)
• FOQA — Flight Operations Quality Assurance Programs
• DARP(S) — Dynamic Airborne Route Planning (System)
• DES — Descend
• ADES — Aerodrome of Destination
• GDOP — Geometric Dilution Of Precision
• VCO — Voltage Controlled Oscillator (Oscillation)
• CCSD — command communications service designator; control communications service designator

• CPS — characters per second
• ALSTG — Altimeter Setting
• CDA — Continuous Descent Approach
• ADA — Advisory Area
• RPP — Radiation Protection Program
• IAT — Investment Analysis Team
• AGHME — Aircraft Geometric Height Measurement Element
• RTO — Rejected Take-Off
• AAAA — Always Accessible Always Afloat
• CFAR — Constant False Alarm Rate
• AP — Airport
• ASDE-X — Airport Surface Detection Equipment - X (frequency) band
• LDI — Landing Direction Indicator
• ASA — Airservices Australia
• MBPS — Megabits per second
• ALERFA — alert phase
• HWCI — Hardware Configuration Item
• CLC — Course Line Computer
• RMS — root mean square (preferred over "RMS")
• PALLAS — Phased Automation of the Hellenic ATC System
• DTS — Dedicated Transmission Service
• NEG — NEGative
• NRT — Net Restricted Tonnage
• BCC — Battery Charge Controller
• UIR — Upper Information Region
• FIOST — Free In/Out and Trimmed
• CAT — Category (e.g. CAT-5 cable)
• ARINC 575 — Mark 3 Subsonic Air Data System
• FIT — Free In Trimmed
• SIR — Screening Information Request
• ANP — Air Navigation Plan
• ADS-C — Automatic Dependent Surveillance-Contract
• FMF — Facility Master File
• NTN — Network Terminal Number
• HEX — Hexadecimal (base 16)
• EV — every
• KM — Kilometer (1,000 meters)
• VGND — Ground Velocity
• ALT HOLD — Altitude Hold Mode
• TO EPR — Takeoff Engine Pressure Ratio
• AAIB — Air Accidents Investigation Branch
• ECA — European Cockpit Association
• XY — Ryan Air
• AMS — Acquisition Management System
• DETRESFA — distress phase (lCAO)
• AMASS — Airport Movement Area Safety System
• PBD — Place Bearing/Distance
• PAPI — Precision Approach Path Indicator (aviation)
• CASA — Civil Aviation Safety Authority
• TC — Transit Corridor

• EIS — Environmental Impact Statement (US)
• TMA — Terminal Area
• ARO — Air Traffic Services Reporting Office
• IISLS — Improved Interrogation Side Lobe Suppression
• FEP — Front End Processor
• VPATH — Vertical Path
• AAF-1 — Director of Airway Facilities
• FWAD — Fresh Water Arrival Draft
• SEP — September
• BENDS — Both Ends (shipping)
• RSPL — Recommended Spare Parts List
• HU — Hungary
• FPO — Flight Procedures Office
• IAS — Indicated Air Speed
• RTA — Required Time of Arrival
• SSEC — Static Source Error Correction
• EADCOS — EAD Co-ordination Group
• NADSW — NADIN Switches
• KCAS — Knots Calibrated Airspeed
• BWAD — Brackish Water Arrival Draft
• QTG — Qualification Test Guide
• LRNS — Long-Range Navigation System
• FTI — FAA Telecommunications Infrastructure
• SRV — Server
• AT&T ASDC — At&t Agency Service Delivery Center
• MAINT — Maintenance
• SNGL — Single
• ADA — Air Defense Area
• AWIPS — Advanced weather Interactive Processing System (NOAA)
• DCE — Data Communication Equipment
• SM — Statute Mile
• ADT — Air Data Tester
• CFWU — Central Flow Weather Unit
• CVSM — Conventional Vertical Separation Minimum
• OUTB — Outbound
• DCS — Double Channel Simplex
• WPM — speech--words per minute
• ERAM — En Route Automation Modernization
• AIDC — Air traffic control Inter-Facility Ground Data Communications
• PSS — Packet Switched Service
• AVMED — Aviation Medicine
• AF — Air France
• TEMP — Temperature
• AWOG — All Weather Operations Group
• AVBL — available
• APS — Arrival Pilot Station
• NSW — No Significant Weather
• ARINC 429 — Mark 33 Digital Information Transfer System
• JTSO — Joint Technical Standard Order
• TSE — Total System Error

• CAAFI — Commercial Aviation Alternative Fuels Initiative
• JCN — Job Control Number
• PALPU — Pancyprian Airline Pilots Union
• AFDK — After Dark
• L/C — Letter of Credit
• EIB — European Investment Bank
• GNSS — Global Navigation Satellite System
• MOGAS — Motor Gasoline
• RTOS — Real-Time Operating System
• IANSSC — IANS Steering Committee
• ECG — En Route Communications Gateway
• NAABSA — Not Always Afloat But Safely Aground
• DIR — Directory
• ATHWARTSHIPS — At right angles to the centreline of the ship
• HVAC — Heating, Ventilating, And Air Conditioning
• OBO — Ore/Bulk/Oil vessel
• AD — airworthiness directives (FAA)
• AFS — Aeronautical Fixed Service
• CIRM — International Radio Maritime Committee
• EIRP — EffectiveIsotropic Radiated Power
• NPRM — Notice Of Proposed Rule Making
• FPS — Flight Progress Strip
• PTR — Program Technical Report
• MDO — Marine Diesel Oil
• PPL — Private Pilot License
• ACL — Altimeter Check Location
• DOC — Document
• RPR — Real Property Report
• V — Volt (measurement)
• ATA — Airport Traffic Area
• F — Degrees Fahrenheit
• FARAWAY — Fusion of Radar and ADS data through two WAY data link
• MCC — Maintenance Control Center
• FPB — Flight Progress Board
• PSN — Packet Switched Network
• FOR — Free On Rail
• POS REF — Position Reference
• ACNZ — Airways Corporation of New Zealand Ltd
• STTR — Small Business Technology Transfer
• TLV — Type-Length-Value
• IOT&E — Independent Operational Test and Evaluation
• CLG — Calling Line
• SAS — Scandinavian Airline Systems
• DPI — Dots per inch.
• C-ATSU — Controlling ATS Unit
• MOD — Memorandum of Decision
• A02 — Automated Observation With Precipitation Discriminator
• CNCL — Cancel
• CCIR — International Radio Consultative Committee (French Acronym)
• DPSK — Differential Phase Shift Keying

• KBPS — kilobits per second
• IG — Inspector General (HHS)
• HAWOP — Helicopter All-Weather Operations Study Group
• JMCT — Job Management Consultative Team [job analysis]
• AFISO — Aerodrome Flight Information Service Officer
• IFSS — International Flight Service Station
• IM — Inner Marker
• TI — Texas International
• BAREBOAT CHTR. — Bareboat Charter
• RSR — en-Route Surveillance Radar
• AWOP — All Weather Operations Panel (ICAO)
• IW — Inside Wiring
• SLEP — Service Life Extension Program
• GENOT — General Notice
• FSYS — Flight Service Station Equipment Systems
• 1 PPS — One Pulse Per Second
• EST — Estimated Ship Time
• CD-ROM — Compact Disk - Read Only Memory
• LC — Local Control
• MMI — Marshall Management Instruction
• VS — Design Speed for Maximum Gust Intensity
• QDM — Magnetic Heading
• OO — Owners Option
• IAO — In And Out
• BOFFER — Best Offer
• NMC — National Meteorological Center (US)
• NPA — Non Precision Approaches
• HDOP — Horizontal Dilution of Precision
• NOTAMN — New Notam
• VCCS — Voice Communication and Control System
• NFPA — National Fire Protection Association
• OP — Operational
• AIT — Automated Information Transfer
• VMC — visual meteorological conditions
• CDR — Coded Departure Routes
• CNL — Cancel
• ITI — Interactive Terminal Interface
• OVERBOARD — Over the side or out of the ship
• AJR — System Operations Services, Air Traffic Organization
• EMAS — Engineered Materials Arresting System
• ARINC 421 — Guidance For Standard Subdivision of ATA Spec 100 Numbering System for Avionics
• NRL — Naval Research Laboratory
• DAF — Deliver At Frontier
• CMIP — Common Management Information Protocol (ATM)
• ARPL — ADEXP Format Repetitive Flight Plans Message
• FIR — Flight Information Region
• ADSY — Administrative Equipment Systems
• AKARD — Available Knowledge And required system Research and Development
• NPR — National Performance Review (office)
• J2EE — Java 2 Enterprise Edition

• FAA — Federal Aviation Authority
• APC — Aeronautical Passenger Communication
• DESP — Despatch
• SSR — Software Specification Review
• STANINE — Standard Nine Score
• KE — Korean Airlines
• PERF — Performance
• ITSM — Information Technology Service Management
• EDF — Electricité de France
• DRAUGHT — Depth to which a ship is immersed in water
• BAHAMAS ALPA — Bahamas Airline Pilots Association
• RMU — Radio Management Unit
• FDIO — Flight Data Input/Output
• ARINC 574 — Passenger Announcement, Entertainment & Service Multiplex System
• ARINC 609 — Design Guidance For Aircraft Electrical Power Systems
• REIL — Runway End Identification Light
• EFTA — European Free Trade Association (Geneva)
• LOE — Line Oriented Evaluation
• DHDATSBE — Despatch Half Demurrage on All Time Saved Both Ends
• ARINC 745 — Automatic Dependent Surveillance, Supplement 1
• NTZ — No Transgression Zone
• ARINC 306 — Guidance For Designers Of Aircraft-Electronic Installations
• FREE EXINS — Free of any Extra Insurance
• OH — Operational Handbook
• RPV — Remotely Piloted Vehicle
• GNDCK — Ground Check
• XTRK — Cross Track Error
• LIFR — Low Instrument Flight Rules
• IROI — Instantaneous Return on Investment
• MDA — McDonnell-Douglas Aerospace
• AEA — Association of European Airlines
• DEP — Depart
• FILO — Free In/Liner Out
• SATSAR — Satellite-aided Search And Rescue
• HDG — Heading
• IANS — Institute of Air Navigation Services
• A01 — Automated Observation Without Precipitation Discriminator
• NCAR — National Center for Atmospheric Research (US)
• TOD — Top of Descent
• CAS — Close Air Support
• ARINC 561 — Air Transport Inertial Navigation System - INS
• CTR — Container Fitted
• TMU — Traffic Management Unit
• ELVENT — Electric Ventilation
• E M — signalling
• ATCSCC — Air Traffic Control System Command Center
• RESMA — Requirements for Emergency and Safety Airborne Equipment
• ARPA — Advanced Research Project Agency's
• SU — Aeroflot Russian Airlines
• RSTD — Restricted

• VCSS — Voice Communications Switching System
• KT — Knots
• ETD — Estimated Time of Departure
• ASP — Arrival Sequencing Program
• LLWAS — Low Level Wind Shear Alert System
• AVAIL — Available
• TODA — Take-Off Distance Available
• SARSAT — Search and Rescue Satellite
• MECO — Main Engine Cutoff
• FIDS — Flight Information Display System
• SMR — Surface Movement Radar
• OPR — Office of Primary Responsibility
• TX / RX — Transmitter / Receiver
• NSAP — Network Service Access Point
• ATM — Air Transportation Management
• ARINC 573 — Aircraft Integrated Data System Mark
• ODAL — Omnidirectional Approach Lighting System
• WFTU — World Federation of Trade Unions
• LVL CHG — Level Change
• ARP — Aerospace Recommended Practice
• ATFM — air traffic flow management
• ACCS — Air Command and Control System
• TIAS — True Indicated Airspeed
• ATC-HMI — Air Traffic Control Human Machine Interface
• AOPA — Aircraft Owners and Pilots Association
• CAEM — Commission for Aeronautical Meteorology (WMO)
• HUD — Head-Up Display
• SN — Brussels Airlines
• IVSI — Instantaneous Vertical Speed Indicator
• DATALINK — Digitized Information Transfer (air/ground)
• EMARSSH — Europe, Middle East, Asia Route Structure of the Himalayas
• EQPT — Equipment
• ARINC 596 — Mark 2 Airborne SELCAL System
• IFF — Identification Friend or Foe (radar)
• AALPBH — Association of Airline Pilots in Bosnia & Herzegovina
• ASPH — Asphalt
• ALTRV — Altitude Reservation
• MAPT — Missed Approach Point
• CX — Cathay Pacific Airways
• MSSR — Monopulse Secondary Surveillance Radar
• HHMM — Hours and minutes
• ATMAC — Air Traffic Management Advisory Committee
• JUN — June
• DNSTRM — Downstream
• ELBA — Emergency Location Beacon-Aircraft
• ADS — automatic dependent surveillance
• CPC — Certified Professional Controller
• PHPD — Per Hatch Per Day
• ARINC 606 — Guidance For Electrostatic Sensitive Device Utilisation & Protection, Sup. 1
• IUAI — International Union of Aviation Insurers

• AEFMP — Algeria, Spain, France, Maroc, Portugal Project
• AJW — Technical Operation Services, Air Traffic Organization
• FSRM — Facility Security Risk Management
• SSR MODE S WG — Secondary Surveillance Radar Mode Selective WG
• XNG — Crossing
• MNOP — Maximum Normal Operating Pressure
• SHEL — Software, Hardware, Environment, Liveware
• VCR — Visual Control Room
• IFO — International Field Office
• NADA — NADIN Concentrator
• TYPH — Typhoon
• MSDA — Material Safety Data Sheet
• TOT — Total
• FCL — Flight Crew Licensing
• LEC — Local Exchange Carrier
• ADLY — Arrival Delay
• ARINC 740 — Multiple-Input Cockpit Printer
• 3D — Three Dimensional
• EFQM — European Foundation for Quality Management's
• CRT — Choice Reaction Time
• ASDA — Accelerate-Stop Distance Available
• PAWES — performance assessment and workload evaluation
• HST — Hypersonic Transport
• NWS — National Weather Service (formerly U.S. Weather Bureau)
• ADSP — Automatic Dependent Surveillance Panel
• VG — Ground Velocity
• AAS — advanced automation system (FAA)
• D-ATIS — Digital - Automatic Terminal Information Service
• VSBY — Visibility
• VRB — Variable
• IFTO — International Federation of Tour Operators
• ARINC 605 — Users Guide For ARINC 616 Avionics Subset Of ATLAS Language
• MNS — Mission Needs Statement
• ANTHAM — Antwerp-Hamburg Range
• ALPA — Japan Air Line Pilots Association of Japan
• ARINC 608 — Standard Modular Avionics Repair And Test System
• HDLTSBENDS — Half Despatch Lay Time Saved Both Ends
• CZM — Conventional Zero Meridian
• FP — Free Pratique
• AVOL — aerodrome visibility operational level
• ACSE — Application Control Service Element
• CDV — Compressed Digital Video
• AOR-E — Atlantic Ocean Region East
• AOC — Airline Operation Control
• BROB — Bunkers Remaining on Board
• FIO — Free In/Out
• CNVTV — Convective
• OWS — Owners
• C&A — Certification and Accreditation
• AFL — Actual Flight Level

• TDWR — Terminal Doppler Weather Radar
• DL — Downlink Message
• DOF — Date of Flight
• DETR — Department of the Environment, Transport and the Regions
• NOTAMC — Notam Cancelling another Notam
• CPD — Continuous Professional Development
• TBN — To Be Notified
• ACCUM — Accumulate
• BADA — Base of Aircraft Data ; Aircraft performance Data
• P&I — Protection and Indemnity insurance
• SBGP — State Block Grant Program
• CART — Classification And Regression Tree (method In Statistical Analysis)
• SWAP — Severe Weather Avoidance Program
• DG — Directional Gyroscope
• BSS — Basis
• LTP — Landing Threshold Point
• SGI — Silicon Graphics Incorporated
• HALO — High Altitude, Low Opening (skydiving term)
• FST — First
• ARINC 408A — Air Transport Indicator Cases And Mounting
• IAR — Intersection of Air Routes
• SITA — Société Internationale de Télécommunications Aéronautiques
• EFMS — Experimental Flight Management System
• AFTN — Automated Fixed Telecommunications Network
• RFL — Requested Flight Level
• ATAF — Allied Tactical Air Force (NATO)
• AAA — Amended meteorological message
• APRT — Airport
• AZM — Azimuth
• SEQ — Sequence
• OGC — Open Geospatial Consortium
• SSAP — Source Service Access Point
• ARINC 576 — Mark 4 Subsonic Air Data System
• LON — Longitude
• PFR — Probability of Failure Repair
• OPX — Off-Premises Exchange
• EVM — Earned Value Management
• MOC — Memorandum Of Cooperation
• HAPI — Helicopter Approach Path Indicator
• CD — Candela
• JUL — July
• DMSH — Diminish
• FCA — Free Carrier Alongside
• AY — Finnair, Oyj - Finland
• MHA — Minimum Holding Altitude
• SDP — Service Delivery Point
• SSM — Sign Status Matrix
• OPI — Office of Primary Interest
• NORAC — No Radio Contact
• FRQ — Frequent

• ASLAR — Aircraft Surge Launch And Recovery
• UAB — Until Advised By
• MTI — Moving Target Indicator
• CONOPS — Concept of Operations
• ATLC — Atlantic
• EVAS — Enhanced Vortex Advisory System
• QBI — Compulsory IFR flight
• ADCOM — Address Commission
• ALCE — Airlift Control Element
• DF — Direction Finder (Finding)
• ATSAP — Air Traffic Safety Action Program
• GEADGE — German Air Defense Ground Environment
• DAPS — Days all Purposes
• COV — Cover
• JURG — Joint Users Requirements Group
• NCD — No Computed Data
• V&V — Validation & Verification
• DEG — Degree
• LUX — Findel International Airport, Luxembourg-Findel, Luxembourg
• CAP — Combat Air Patrol
• VC — Design Cruising Speed
• ARINC 744 — Full Format Printer
• CNTRLN — Centerline
• BI — Both inclusive
• WGS 84 — World Geodetic System 1984
• PHINOM — Nominal Bank Angle
• CPIC — Capital Planning and Investment Control
• LGT — Light
• A/A — Air/Air
• HSI — Horizontal Situation Indicator
• A/C — Aircraft Commander
• OFT — Outer Fix Time
• RUC — Rapid Update Cycle
• AMSS — Aeronautical Mobile Satellite Service
• AOM — Aircraft Operating Manual
• GNLU — GNSS Navigation and Landing Unit
• CEC — Commission of the European Communities ;
• ARSR — Air Route Surveillance Radar
• EFSTS — Electronic Flight Strip Transfer System
• AFO — Airport Field Office
• F&E — Facilities and Equipment
• CMA — Context Management Application
• PRKG — Parking
• ARF — Airport Reservation Function
• AIRAC — Aeronautical Information Regulation and Control
• AECB — Atomic Energy Control Board
• FREQ — Frequency
• ALRS — Alerting Service
• ASYNC — Asynchronous
• NPS — Navigation Performance Scales

• SARPS — Standards and Recommended Practices
• PROM — Programmable Read Only Memory (chip)
• HG — Mercury (Latin Hydrargyrum)
• RCP — Radio Control Panel
• VCMIN — Active Minimum Control Speed
• AIG — Airbus Industries Group
• P — Procedure-Required Tuned NAVAID
• AFIS — Airport Flight Information Service
• IRM — information resource management
• DIP — Drop and Insert Point
• EXTRM — Extreme
• IR — Ice on Runway
• CRN — Crane
• DGELG — Dangerous Goods European Advisory Group
• HDWTS — Half Despatch Working Time Saved
• GRT — Gross Registered Tonnage/Tons
• ID — IDentifier
• EAD — Earliest Arrival Date
• APPA — Asociacion Profesional de Pilotos Aviadores de Costa Rica
• TMC — Traffic Management Coordinator
• LVB — Luchtverkeersbeveiliging
• ATILO — Administrative Tribunal of the International Labour Organisation
• RPC — Restoration Priority Code
• OAT — Outside Air Temperature
• ASPW — Any Safe Port in the World
• FEB — February
• MTD — Moving Target Detection
• TWY — Taxiway
• IAPL — IFPS APL Message
• FHEX — Fridays/Holidays Excluded
• CWY — Clearway
• ADZY — Advisory
• CRAF — Civil Reserve Air Fleet
• ALSF2 — ALS with Sequenced Flashers II
• ATCT — Airport Traffic Control Tower
• LAAS — Local Area Augmentation System
• PRP — Pulse Repetition Period
• APDSG — Airspace Planning & Development Sub-Group
• EIU — Even If Used
• ACAA — Air Carrier Association of America
• AI — Application Interface
• AOC — Aerodrome Obstacle Chart
• RMK — Remark
• ATS — Air Traffic Services
• BKN — Broken Sky (METAR Code)
• ABOARD — On or within the ship
• SRQ — Slot Request
• AAIM — Aircraft Autonomous Integrity Monitoring
• AAME — Association of Aviation Medical Examiners
• BELOW — Beneath the deck

• IVRS — interim voice response system
• ODIF — Open Document Interchange Format
• ECAR — European Civil Aviation Requirement
• HSM — High Speed Modem
• COP — Custom of Port
• FOD — Foreign Object Damage
• 1 :1 — One-to-one relationship
• NBAA — National Business Aircraft Association
• ABDIS — Automated Data Interchange System Service
• DFRT — Deadfreight
• HIDE — Harmonised, Integrated Development Environment
• TCP / IP — Transmission Control Protocol / Internet Protocol
• CPE — Customer Premise Equipment
• EGPWS — Enhanced Ground-Proximity Warning System
• AFA — Association of Flight Attendants
• LZ — Balkan Bulgarian Airlines
• PCA — Propulsion Controlled Aircraft
• CHTRS — Charterers
• RTC — Radio Transmission Control
• TSRV — Transport System Research Vehicle
• V1 — Take-Off Decision Speed
• AEP — FAA Office of Aviation Policy Planning and Environment
• DVD — Dual View Display
• JPDA — Joint Probabilistic Data Association
• NGA — National Geospatial-Intelligence Agency (formerly National Imagery and Mapping Agency; US government)
• DPTH — Depth
• CAVOK — Clouds and Visibility OK
• BASE AM — Base Arrival Manager
• DITCO — Defense Information Technology Contracting Office (formerly DECCO)
• RMS ERROR — Root Mean Square error.
• ERIP — EAD Remote Interface Package
• ARINC 566A — Mark 3 VHF Communications Transceiver
• ITIL — Information Technology Infrastructure Library
• DEGS — Degrees
• RNAV — Random Navigation Area Navigation
• QFU — Magnetic orientation or runway in use
• SMPS — Sector Maintenance Processor Subsystem
• FMC — Federal Maritime Commission's
• BN — Booking Note
• BRA — Bearing, Range and Altitude
• OGE — Operational Ground Equipment
• AARA — Amsterdam-Antwerp-Rotterdam Area
• ECS — Environmental Control System (Subsystem)
• NASTEP — National Airspace System Technical Evaluation Program
• MAUW — Maximum All Up Weight
• ERSS — Eurocontrol Radar Surveillance Standard
• LOCID — Location Identifier
• BASE — Cloud base
• ACS — airspace control system
• XPNDR — Transponder

• CSS — Central Site System
• CG — centre of gravity
• FADEC — Full Authority Digital Engine Control
• LDR — Labor Distribution Reporting
• ASIAS — Aviation Safety Information Analysis and Sharing
• AEREA — Association of European Research Establishments in Aeronautics
• CNS/ATM — Communication, Navigation and Surveillance / Air Traffic Management
• LDG — Landing (aviation)
• LOS — Line-Oriented Simulation
• AIG — Accident Investigation & Prevention
• NW — Northwest Airlines
• ONC — Operational Navigation Chart
• IFOR — Implementation Force
• ARINC 751 — Gate-Aircraft Terminal Environment Link - Aircraft Side
• AOV — Air Traffic Safety Oversight Service
• ULR — Ultra Long Range
• FPLMTS — Future Public Land Mobile Telecommunications System
• LOI — Letter of Indemnity
• SSR MODE S — Selective Address SSR
• BA — Barometric Altitude
• ECPIC — Electronic Capital Planning Investment Control
• CHI — Computer-Human Interface
• A/I — Accident/Incident
• PFL — Planned Flight Level
• ESEWD — East-Southeastward
• PELA — Proficiency test in English Language for ATCOs
• TBS — To Be Supplied(by government)
• DALR — Digital Audio Legal Recorder
• LH — Lufthansa German Airlines
• EFIS — Electronic Flight Information System
• ASE — Altimetry System Error
• VTOL — Vertical Takeoff And Landing
• ADIZ — Air Defence Identification Zone
• APA(CV) — Air Line Pilots Association (Cape Verde)
• C/S — Call Sign
• ACSA — Allied Communications Security Agency
• DA — Disbursement Account
• ADZD — Advised
• AFIL — Air Filed Flight Plan
• PTT — Press to Talk
• DNSLP — Downslope
• RCLS — Runway Centerline Lighting System
• ITMRA — Information Technology Management Reform Act (Part of the Clinger-Cohen Act)
• SVN — Satellite Vehicle Number
• EDS — Enterprise Database System
• HTZ — Helicopter Traffic Zone
• BRM — Barometer
• STAC — Second Time Around Clutter
• CPCS — Consolidated Production Control System
• FIN — Finnair Oyj, Finland

• ARINC 742 — Design Guidance For Windshear Warning and Guidance Equipment
• ATCO — Air Taxi Commercial Operator
• MODE C — Altitude Reporting Mode of Secondary Radar
• CRT — Cargo Retention Clauses
• OMI — Organisation Maritime Internationale (French: International Maritime Organization; UN)
• ATCRB — Air Traffic Control Radar Beacon
• DEIS — Draft Environmental Impact Statement (US)
• OTR — Oceanic Transition Route
• FACC — Feature and Attribute Coding Catalogue
• VTR — Variable Takeoff Rating
• RCH — Reach
• PROC — Procedure
• PCN — Project Control Number
• WOCL — Window of Circadian Low
• OVC — Overcast (METAR Code)
• SATCAS — Selenia Air Traffic Control Automated System
• FRZN — Frozen
• DRFT — Drift
• IOSA — Iata Operational Safety Audit
• AOCC — Atlantic Operations Control Center
• MB — Merchant Broker
• CBFT — Cubic Feet
• PAA — Plot Accuracy Analysis
• SPAS — Safety Performance Analysis System
• EOF — Emergency Operating Facility
• PABX — Private Automated Branch EXchange (company Phone System)
• OIS — OGE Input Simulator
• AVGAS — Aviation Gasoline
• DABS — Discrete Address Beacon System
• TYP — Aircraft Type
• ACCT — Accounting Records
• CWP — Controller Working Position
• DF — Direction Finding or Finder
• CDD — Corporate Data Dictionary
• FPM — Feet Per Minute
• LRU — Line Replacement Unit
• ACCID — Notification of an aircraft accident
• CUF — Cumuliform
• IGFET — Insulated Gate Field Effect Transistor
• SARP — Signal Automatic Radar Processing
• PRORES — Problem Resolution
• ADVY — Advisory
• EL — Electro-Luminescent
• CACRC — Commercial Aircraft Composite Repair Committee
• TSNT — Transient
• DAR — Designated Agency Representative
• AMA — Area Minimum Altitude
• ALTM — Altimeter
• NMCS — Network Monitoring and Control System
• RMI — Radio Magnetic Indicator

• DP — Dewpoint Temperatue
• ARINC 578 — Airborne ILS Receiver
• SALS — Short Approach Lighting System
• NCW — Non Conformance Warning
• WSW — West-South-West
• ASC — AUTODIN Switching Center
• DR — Disaster Recovery
• DWAT — Deadweight
• B&H — Bosnia & Herzegovina
• AVHRR — Advanced Very High-Resolution Radiometer
• FRG — Federal Republic of Germany's
• PD — Profile Descent
• NAT NAM — North Atlantic / North America
• AMSSP — Aeronautical Mobile Satellite Service Panel
• JAN — January
• DEM — Digital Elevation Model
• CFCS — Central Flow Control Service
• FOQ — Free On Quay
• ARINC 585 — Electronic Chronometer System
• QUAD — Quadrant
• BSS — Best Signal Selection
• TWIP — Terminal Weather Information for Pilots
• REQ — Request
• AFTIL — Airway Facilities Tower Integration Laboratory
• TMG — Tourig Motor Glider
• SF — Special Freighter
• FIOT — Free In/Out and Trimmed
• ODS — Operational Data Store (knowledge management)
• SATCOM — Satellite Communication
• CNDN — Canadian
• AAC — Airline Administrative Communication
• JTIDS — Joint Tactical Information Distribution System (djay-tidz)
• GLOSS — Global Sea Level Observing System (of IOC)
• CWBS — Contract Work Breakdown Structure
• TRK — Track
• DZ — Drizzle
• PIREP — Pilot Report
• EEC — Eurocontrol Experimental Centre
• ARINC 413A — Guidance For Aircraft Power Utilisation And Transient Protection
• GFP — Government Furnished Property
• DFI — Direction Finding Indicator
• RSLS — Receiver Side Lobe Suppression
• SNDCF — Subnetwork Dependent Convergence Facility
• GO — Gas Oil
• CP — charter-party
• AUTONAV — Auto-Navigation
• A — Aeroplane
• ISLS — Interrogation Side Lobe Suppression
• CLT — Calculated Landing Time
• ATCI — Airport ATC and Information systems

• FTS — Federal Telecommunications System
• COT — At the Coast
• IAASM — International Academy of Aviation and Space Medicine
• POS INIT — Position Initialization
• ASQP — Airline Service Quality Performance
• PALS — Precision Approach Lighting System
• ADZ — Advise
• SRZ — Special Rules Zone
• AMIS — Aircraft Management Information System
• OK — Czech Airlines
• CDR — Cost Detail Report
• ADVCTN — Advection
• FRA — Flap Retraction Altitude
• CEQ — Council on Environmental Quality (U.S.)
• DEM — German mark
• ADIC — ATS Interfacility Data Communications
• FSK — Frequency Shift Keying
• MTCD — Medium Term Conflict Detection
• DRDF — Digital Readout Direction Finder
• IAR — Investment Analysis Report
• ADLP — Aircraft Data Link Processor
• EUROCONTROL — European Organisation for the Safety of Air Navigation
• SSR — secondary surveillance radar (ICAO/FAA)
• BR — Eva Airways Corporation
• CWAR — Continuous Wave Acquisition Radar
• BRF — Brief
• IUHTAUTC — If Used, Half Time Actually To Count
• CSIS — Centralized Storm Information System
• PASTUS — Past Us
• ABAS — Aircraft-based Augmentation System
• ATLAS — Air Traffic Land and Air Study
• AFIZ — Aerodrome Flight information Zone
• ATOS — Air Transportation Oversight System
• UAT — Universal Access Transceiver
• WHO — World Health Organisation
• FIX — position in space usually on aircraft’s flight plan
• CARATS — Collaborative Actions for Renovation of Air Traffic Systems
• ETE — Estimated Time En Route
• AAPA — Association of Asia Pacific Airlines
• AEV — Annual Equivalent Value
• CYTA — Cyprus Telecommunications Authority
• VASI — Visual Approach Slope Indicator
• PALPA — Pakistan Air Line Pilots' Association
• HBN — Hazard Beacon
• ARINC 743 — Airborne Global Positioning System Receiver
• IMPR — Improve
• CNS/ATM-1 — Communication, Navigation and Surveillance / Air Traffic Management Package 1
• LCGS — Low Cost Ground Surveillance Radar
• RAPCO — Radar Approach Control
• OMEGA — Very Low Radio Navigation System

• BYD — Beyond
• AT&T CSA — At&t Customer Support Associate
• A/S — Alongside
• ADVO — Administrative Voice
• ETN — Electronic Telecommunications Network
• ESERN — East-Southeastern
• RID — review item description
• ARR — Arrive
• DTU — Data Terminating Unit
• EU-FCL — EASA Flight Crew Licensing
• GADO — General Aviation District Office
• AATT — Advanced Aviation Transportation Technology
• COBALT — Common Objective Alignment Team
• IDENT — Identification
• MTTRP — Mean Time to repair product
• ETO — Estimated Time Over
• ALRS — Approach Lighting System
• CAT X — Category x Precision Approach
• EFPM — Extended Flight Plan Message
• ASI — Aviation Safety Inspector
• 4D FMS — 4D Flight Management System
• EATCHIP — European Air Traffic Control Harmonisation and Integration Programme
• FFM — Free Flight Mode
• TKX — Crosstell Tracker
• SUPSIS — Supervisor
• ACL — Air Traffic Control Clearance
• FZL — Freezing Level
• OBST — Obstacle
• ROC — Regional Operations Center (NATO)
• NCB — National Cargo Bureau
• TLA — Title Line Area
• RAPPI — Radar Access Plan Position
• SFOR — UN Stabilisation Force (in Bosnia And Herzegovina)
• CFP — Cold Front Passage
• BANS — BRITE Alphanumeric System
• AIRPROX — The code word used in air traffic incident report to designate aircraft proximity
• IU — If Used
• APN — apron
• UHF — Ultrahigh Frequency
• METAR — Meteorological Terminal Aviation Routine Weather Report
• SNPA — Subnetwork Point of Attachment
• SFPL — System Flight Plan Processing
• FPF — Flight Plan Fallback
• MTR — Military Training Route
• A/H — Altitude/Height
• ARINC 748 — Communications Management Unit
• CENRAP — Center Radar ARTS Presentation
• LCTD — Located
• AVSI — Aerospace Vehicle Systems Institute
• LAYCAN — Layday Cancelling Date

• ADSEL — Address Selective SSR System
• NAAQS — National Ambient Air Quality Standards (US)
• ARINC 750 — VHF Data Radio
• NCF — National Control Facility
• WMSCR — Weather Message Switching Center Replacement
• DER — Departure End of the Runway
• TDM — Total Delay in Minutes
• ESCO — Executive Support and Coordination Office
• MTBR — Mean Time Between Replacement
• VSO — Stalling Speed in the Landing Configuration
• EARS — En Route Analysis and Reporting System
• EXTD — Extend
• EFDP — European flight data processing(Eurocontrol)
• GEO — Geographic
• BT — berth terms
• ARAG — Amsterdam Rotterdam Antwerp Gent Range
• CUP — Computer Utility Program
• RSC — Rescue Sub Centre
• JD TF — Job Description Task Force
• FGS/C — Flight Guidance System/Computer
• ARINC 752 — TFTS Airborne Radio Sub-System
• NADIN — National Airspace Data Interchange Network
• ESDI — Enhanced Small-Device Interface
• COCESNA — Central American Corporation for Air Navigation Services
• ATSU — Air Traffic Services Unit
• AEE — FAA Office of Environment and Energy
• MSK — Minimum Shift Keying
• PANS — Procedures for Air Navigational Services
• SHL — Saville and Holdsworth Ltd
• GES — Ground Earth Station
• DEL — Delete
• CASOR — Civil Area Services Operations Room
• FAL — Final Assembly Line
• ARINC 602 — Test Equipment Guidance
• HX — No Specific working hours
• ALPA-FYROM — Air Line Pilots Association of The Former Yugoslav Republic of Macedonia
• ALPAP — Air Line Pilots Association of the Philippines
• CAOFA — Co-ordination of Air Operations in the Forward Area
• TROP — Tropopause
• ARINC 415 — Operation/Technical Guidelines On Failure Warning and Functional Test
• CPL — Commercial Pilots License
• ETC — Estimated Time of Completion
• MTA — Military Training Area
• COB — Closing of Business
• NDI — Nondestructive Inspection
• SVVP — Software Verification and Validation Plan
• SOPA — Standard Operating Procedure Amplified
• FEW — Few
• ITWS — Integrated Terminal Weather System
• ILO — International Labour Organisation

• GEOREF — Geographical reference
• AP — Airport Protection
• FDFMG — Flight Data and Flow Management Group
• OUNS — Operational Navigation System
• LOW — Last Open Water
• ADIS — Automatic dependent surveillance and Data Link Interim System
• ATR — Air Traffic Requirements
• ADTN — Administrative Data Transmission Network
• OIG — Office of the Inspector General
• VAP — Visual Aids Panel
• AFD — Airport Facility Directory
• TAU — Range / Range rate
• COMCO — Command Communications Outlet
• ATOMS — Air Traffic Operations Management System
• FIRE — Fire Station
• CTSKLS — Catskills
• UTC — Universal Time Coordinate
• GRI — General Rate Increase
• LIM — Limit
• AAOSA — Always Afloat or Safe Aground
• VAQ — VHF Avionics Qualification
• WTC — Wake Turbulence Category
• SMT — station management (protocol)
• XMT — Excluding
• MTOM — Maximum Take-Off Mass
• EXPLT — Extrapolate
• EB — Eastbound
• FD — Free Discharge
• PAAST — Pan American Aviation Safety Team
• SS — Sunset
• LYR — Layer
• ATDS — Airborne Tactical Data Systems (USN)
• RDPS — Radar Data Processing System
• SSW — South-South-West
• SESMA — Special Event Search and Master Analysis
• EOPF — Electronic Official Personnel File
• ICAO — International Civil Aviation Organisation
• AAH — Autonomous Aircraft Hybrid
• ARINC 591 — Quick Access Recorder For Aids System
• PTUL — Pilots Trade Union of Latvia
• ADL — Aeronautical Data-Link
• RCL — Runway Centreline Lighting
• CFIT — Controlled Flight into Terrain
• RBP — Radar Bypass Processor
• FAN — False Alarm Normaliser
• CEI — Cabin Equipment Interfaces
• MTRAQ — Multi track quality
• REA — Ready Message
• GICB — Ground Initiated Comm B Protocol
• TARE — Telegraphic Automatic Relay Equipment

• NRZI — Non Return to Zero Inverted magnetic tape bpi
• CNSP — Consolidated NOTAM System Processor
• DASI — Digital Altimeter Setting Indicator
• ATIS — Automatic Terminal Information Service
• DO — Diesel Oil
• ATCA — Air Traffic Control Association, Inc.
• CLKWS — Clockwise
• ST&E — Security Test and Evaluations
• HV — Transavia Airlines CV
• FWDD — Fresh Water Departure Draft
• AOA — Airport Operations Area
• APATSI — Airport / Air Traffic Systems Interface
• WXXM — Weather eXchange Model
• WPX — Next waypoint on the flight plan
• CRMCS — Central RADNET Monitoring and Control System
• SHACC — SHAPE Airspace Coordination Centre
• STCA — Short Term Conflict Alert
• ANM — ATFM Notification Message
• DOM — Domestic
• MET — Meteorological
• FAC — Fast as can
• DDA — Dedicated Digital Access
• ITEB — Information Technology Executive Board
• FRS — Functional Requirements Specifications
• V/STOL — Vertical or Short Take-Off and Landing
• AID — Airport Information Desk
• WND — Wind
• EIF — Extended Interface Function
• OT&E — Operational Test and Evaluation
• FLIDRAS — Flight Data Replay and Analysis System
• ARINC 757 — Cockpit Voice Recorder
• APB — APATSI Project Board
• CPCS — Cabin Pressure Control System
• WRNG — Warning
• BASE AMD — Base Arrival Manager Display
• NYPE — New York Produce Exchange
• HS-DTS — High Speed Data Transmission System
• ESRI — Environmental Systems Research Institute (developer of geographic information systems (GIS) software, Redlands, California)
• FIXM — Flight Information Exchange Model
• AWSS — Automated Weather Sensors System
• ARINC 577 — Audible Warning System
• BA — Budget Analyst
• FDC — Flight Data Company
• MIRACULIX — Multi Interface Radarformat Calculator and
• ATFMU — Air Traffic Flow Management Unit
• NAWAU — National Aviation Weather Advisory Unit
• HELIOPS — Helicopter Operations Panel
• GDLP — Ground Data Link Processor
• ISPS — International Ships and Port Security system
• TWT — Travelling Wave Tube

• SSFDR — Solid-State Flight Data Recorder
• AVI — Audio/Video Interleaved Format
• SUC — Start-Up Controller
• VOM — Volt-ohm-milliammeter
• FHINC — Fridays/Holidays Included
• C-ATSU — Current Air Traffic Services Unit
• CEATS — Central European Air Traffic Services
• IFRB — International Frequency Registration Board of the International Telecommunication Union
• FPA — Flight Path Angle
• CUPS — Consolidated Uniform Payroll System
• FO — For Orders
• AFMT — Airway Facilities Management Team
• ADREP — Aircraft Accident/Incident Data Reporting System
• HHMMSS — hour-hour / minute-minute / second-second
• CCIF — Comit? Consultatif International Des Communications T?l?phoniques ? Grande Distance (French For International Telephone Consultative Committee
• RSYD — Release Subject to Your Discretion
• VSIG — Vertical Separation Implementation Group
• FG — Fog Gun
• ATMAS — Air Traffic Management Automated System
• AASR — Aging Aircraft Safety Rule
• DFTI — Distance-from-Touchdown Indicator
• WPP — Working Position Processor
• HI FI SIM — High-Fidelity Simulator
• PER SE — By Itself
• CBM — Cubic Metres
• AITS — Automated Inventory Tracking System
• DFS — Detailed Functional Specification
• APMS — Automated Performance Measurement System
• AVPAC — aviation VHF packet communications
• CMSA — Carrier Sense Multiple Access
• ELNGT — Elongate
• BTC — Basic Training Course
• SSO — STAR Support Office
• VBX — Visual Basic Extensions
• MTOW — Maximum Take-off Weight
• ATAS — Airspace and Traffic Advisory Service
• SRMDM — Safety Risk Management Memo
• AP — Airport Plaza
• AUTOCAD — Automatic Computer Aided Design
• MMEL — Master Minimum Equipment List
• DATAC — Digital Autonomous Terminal Access Communication
• BTL — Between layers
• AOC — Aircraft Operations Centre
• VMAX — Basic Clean Aircraft Maximum CAS
• ALF — Aloft
• CEAS — Class E Airspace
• AES — Airborne Earth Station
• HEL — Helicopter
• PREV — Previous
• HDG SEL — Heading Select

• ACM — Acceptable Means of Compliance
• II — Interrogator Identity
• NEXRAD — Next Generation Weather Radar
• QUIS — Questionnaire for User Interface Satisfaction
• VTN — Voice Telecommunications Network
• ACAMS — Aircraft Condition Analysis and Management System
• AACO — Arab Air Carriers Organisation
• CGL — Circling Guidance Lights
• AOCI — Airport Operators Council International
• SNPL — Syndicat National des Pilotes de Ligne
• TWN — Tactical Weather Network
• FPPU — Flight Planning and Flight Progress Updating
• CPL — Customer Priority Listing
• LYCN — Layday Cancelling Date
• DPNG — Deepening
• GRD — Geared
• SEMP — Software Engineering Management Plan
• FSF — Flight Safety Foundation
• CRM — Crew Research Management
• NB — NorthBound
• CAST — Certification Authority Software Team
• DCD — Double Channel Duplex
• ASN — Advance Shipment Notice
• AIM — Aeronautical Information Management
• TO NL — Takeoff Engine Fan Speed
• XPD — ATC Transponder
• CESAR — Course Evaluation Sheets Analysis and Reporting
• AFM — Aeroplane Flight Manual
• MT — Mertic Tonne
• GNSSP — Global Navigation Satellite System Panel
• EXP — Expect
• NATCO — National Communications Switching Center
• ARINC 404A — Air Transport Equipment Cases And Racking
• ACDMD — Air Collaborative Decision Making Demonstrator
• UAP — User Application Profile
• MRVA — Minimum Radar Vector Altitude
• STANAG — (NATO) Standardisation Agreement
• SCAT-1 — Special Category 1
• IFE — In-Flight Emergency
• CAR — Caribbean Region
• CSD — Constant Speed Drive
• LOF — Lloyds Open Form
• RIRT — Russian Institute of Radio Navigation and Time
• FIG — Flight Inspection Group
• ACAS — Airborne Collision Avoidance System
• MASS — Maintenance Automation System Software
• VNO — Maximum structural cruising speed
• WRC — World Radio-communications Conferences
• RMNDR — Reminder
• TLPD — Traffic Load Prediction Device

• CRAM — Conditional Route Availability Message
• MEA — Minimum Enroute Altitude
• PZ — Portotroz
• SUP/ACC — Supervisor Area Control Centre
• OCS — Oceanic Control System
• FWCS — Flight Watch Control Station
• FISO — Flight Information Service Officer
• AEGIS — Airborne Early Warning Ground Environment Integrated Segment
• ACAS — Aircraft Collision Avoidance System
• OSH — Open Shelter Deck
• EHSI — Electronic Horizontal Situation Indicator
• CNS — Communication, Navigation and Surveillance Systems, Inc.
• ARN-1 (TABLE) — Basic ATS Route Network in the Lower and Upper Airspace
• AFRAA — African Airlines Association
• LIH — Light Intensity High
• D&D — Distress and Diversion
• ARFF — Aircraft Rescue and Fire Fighting
• RSI — Radiation Status Indicator
• EATMP — The European Air Traffic Management Programme
• TITLE — Message Name
• GDE — Ground Delay Enhancements
• TMSSG — Top Management Structure Sub-Group
• NODE — NATS Operational Display Equipment
• VSTOL — Vertical or Short Takeoff and Landing
• NATMC — NATO Air Traffic Management Committee
• STWL — Stopway Lights
• ASTA — Airport Surface Traffic Automation
• FPA — Focal Plane Array
• TOPL — Take Off Performance Limits
• IVSR — Interim Voice Switch Replacement Program
• SSRBRIGH — Highlight set code to target
• FPCP — Flight Path Control Point
• TKE — TrackAngle Error
• SIC — Service Initiation Charge
• VRRS — Voice Recording and Display System
• RWY — Runway
• NSE — Navigation System Error
• ATTIS — AT&T Information Systems
• MAX CRZ — Maximum Engine Thrust for Two-Engine Cruise
• LCL — Less Container Loaded
• AFMS — Automatic Flight Management System
• BM — Beam, Maximum
• VASIS — Visual Approach Slope Indicator System
• FRNG — Firing
• ERR — Error message
• HUMS — Health and usage monitoring systems
• 8.33 CP — 8.33 Contact Person
• FEIS — Final Environmental impact statement (US)
• OSA — Operational Safety Assessment
• WSPD — Wind Speed

• CRE — Class Rating Examiner
• DRCP — Data Reduction Computer Program
• FLAS — Flight Level Allocation System
• DOI — Department Of Industry
• FOFFER — Firm Offer
• FONSI — Finding of no significant impact. See Environmental impact statement (US)
• PA — Pan American Airways
• USOAP — Universal Safety Oversight Audit Program
• ACC-TC — ACC Tactical Controller
• FSCAP — Flight Safety Critical Aircraft Parts
• PROB — probability
• MODIS — moderate-resolution imaging spectrometer (NASA/GSFC)
• ADS-B — Automatic Dependent Surveillance-Broadcast
• FEU — Forty-Foot Equivalent Unit
• SUR — Surveillance
• VU — Utility Speed
• UAC — Upper Area Control
• SURVITE — Surveillance Integrated Tested for EATMS
• VSA — By Visible reference to the ground
• RIMS — Runway Incursion Monitoring System
• IFL — Intermediate Flight Level
• AAFG — ATM Added Functionality Sub-Group
• INM — Integrated Noise Model
• HURCN — Hurricane
• RBDPE — Radar Beacon Data Processing Equipment
• FIAO — Flight Inspection Area Office
• MTW — Mountain Waves
• RE — Resident Engineer
• MCSG — Military Committee Staff Group
• SOL — Sector Outbound List
• ADO — IFALPA Aircraft Design & Operation Committee
• CSMC — Cyber Security Management Center
• C/A CODE — Course / Acquisition Code
• AFS — Automatic Flight System
• TEMPO — Temporary
• AWOS — Automated Weather Observing System
• B/C — Benefit/Cost
• DABBS — DITCO Automated Bulletin Board System
• AO — Airlines Operator
• CASTLE — Consolidated Automated System for Time and Labor Entry
• RBPM — Remote Beacon Performance Monitor
• EATCHIP OCD — Operational Concept Document
• VOT — VOR airborne equipment test facility
• TSG — Training Sub-Group
• IFPPS — Integrated Flight Plan Processing System
• WPN — First waypoint in the next sector
• APM — approach path monitor
• CR — Course to a VOR Radial
• CFMU — Central Flow Management Unit
• PCB&T — Personnel Compensation Benefits and Travel

• AJT — Terminal Service, Air Traffic Organization
• ACRP — Airport Cooperative Research Program
• AND — Associate Administrator for NAS Development
• CEW — Civil Engineering Works
• CATSIM — CAA Air Traffic Simulator
• N1 — Gas generator speed
• ANC — Alternate Network Connectivity
• MDT — Maintenance Data Terminal
• HUM RES — Human Resources
• ADDA — Administrative Data
• LCN — Local Communications Network
• MLDT — Mean Logistic Down Time
• DET — Detention
• SNET — Safety Nets
• TRA — Thrust Reduction Altitude
• RLG — Ring Laser Giro
• ABOVE DECK — On the deck
• AFDS — Autopilot Flight Director System
• AST — FAA Office of Commercial Space Transportation
• EGNOSS — European Geostationary Navigation System Overlay
• IRCAS — Intranet Radio Coverage Analysis System
• ACEP — Airport Capacity Enhancement Plan
• AUTOB — Automatic Weather Reporting System
• ACH — ATC Flight Plan Change
• PMA — Parts Manufacturer Approval
• CAI — Contractor-Acceptance Inspection
• FALPA — Fiji Air Line Pilots Association
• TXWY — Taxy Way
• RCDSS — Radar Control and Display Subsystem
• STANLY — Statistics and Analysis
• KECU — Thousands of European Currency Units
• ADI — Automatic De-Ice and Inhibitor
• ALD — Airlift Division
• VSSG — Vertical Separation Sub-Group
• AS — Airspeed
• BRL — Building Restriction Line
• EBUS — Enhanced Backup Surveillance
• LRR — Long Range Radar or Low Cost Radar
• CFL — Cleared Flight Level
• LO — Low
• SHAPE — Supreme Headquarters Allied Powers Europe (NATO)
• VREF — Approach Reference speed
• RSA — Runway Safety Area
• SNIR — Signal-to-noise ratio
• HF — Human Factors
• OAG — Official Airline Guide
• SSALS — Simplified Short Approach Lighting Systerm
• MF — Middle Frequency
• LAHSO — Land And Hold Short Operation
• EARTS — En Route Automated Radar Tracking System

• NRH — No Reply Heard
• FDR — Federal Data Registry
• WSFO — Weather Service Forecast Office
• EGT — Exhaust Gas Temperature
• CRNA — Centre Régional de la Navigation Aérienne
• FPAP — Flight Path Alignment Point
• ARINC 414 — General Guidance For Equipment And Installation Engineers
• OPADD — Operating Procedures for AIS Dynamic Data
• OATS — Orbit and Attitude Tracking
• SUP/MIL — Supervisor military
• RBC — Rotating Beam Ceilometer
• FDESP — Free Despatch
• WXR — Weather Radar
• ACH — Air traffic control Flight Plan Change
• TWI — Terminal Weather Information
• JPDO — Joint Planning and Development Office's
• ERIDS — En Route Information Display System
• AAD — Assigned Altitude Deviation
• SVCBL — Serviceable
• DBCRC — Defense Base Closure & Realignment Commission
• ALSF — Approach Lighting System With Sequenced Flashing Lights
• CUST — Customs
• FDPS — Flight Data Processing System
• ETVCT — En Route Training Voice Communication Tool
• TCAS — Traffic Alert and Collision Avoidance System
• URTF — User Requirements Task Force
• XASP — Extended AIRCOM Service Processor
• TODAH — Take Off distance available, helicopter
• COBLDN — Closing of Business London
• AOI — Area of Operational Interest; TERPS Office (USAF)
• DIRF — Direction Finding
• ADSIM — Airfield Delay Simulation Model
• PCGO — Part Cargo
• CDRL — Contracts Data Requirements List
• NARG — Navigation Aids and Area Navigation Group
• EATMS — European Air Traffic Management System
• IAM — Institute of Aviation Medicine
• AIDS TO NAVIGATION — Artificial objects to supplement natural landmarks indicating safe and unsafe waters
• TDA — Track Detection Analysis
• ASPM — Aviation System Performance Metrics
• EVAS — EATMS Validation Strategy
• V2 — Takeoff Climb Velocity
• DADC — Digital Air Data Computer
• MIDAS — Man-Machine Integration Design and Analysis System
• LORAN — Long Range Navigational System
• CDS — Controller Display Support
• AFAST — Active Final Approach Spacing Tool
• DEV — Deviation
• FMU — Flow Management Unit
• SBT — Scenario-Based Training

• MUDPIE — Multiple User Data Processing Interactive Environment
• VSD — Vision and Strategy Document
• SSE — Servicing Security Element
• DEBRIEF — Debriefing
• W2 — World Airlines
• ALSEC — All Sectors
• ATPL — Air Transport Pilot Licence
• BRITE — Bright Radar Indicator Tower Equipment
• ACPO — Aircraft Position Operator
• WAAS — Wide Area Augmentation System
• RAPNET — Regional ATC Packet switched Network
• RATCF — Radar Air Traffic Control Facility
• DYSIM — Dynamic Simulator
• XCM — Crossing Request Cancelation Message
• EEI — Essential Elements of Information
• GIB — Global Navigation Satellite System Integrity Broadcast
• SEL — Single Event Level
• AIRMET — Airmen's Meteorological Information
• SVP — Supervisor
• HELLANET — Hellenic aeronautical Network
• FPFS — First Planned First Served
• TB — Tellback
• SDIS — Switched Digital Integrated Service
• AFM — Affirmative Fair Housing Marketing
• AOCP — Airborne Operational Computer Programme
• PND — Primary Navigation Display (aviation)
• AFL — Assigned Flight Level
• DOD — Department of Defence
• ACFS — Advanced Concepts Flight Simulator
• DOI — United States Department of Interior
• ATREP — Air Traffic Representative
• ADTN2000 — Administrative Data Transmission Network 2000
• UUP — Updated Use Plan
• NIST — National Institute of Standards and Technologies
• ALPA-SA — Air Line Pilots Association - South Africa
• FEATS — Future European Air Traffic System
• IRD — Initial Requirements Document
• X.25 — Packet Switched Data Network
• P&H — Press and Hold
• ASAS — Aviation Safety Analysis System
• TMRR — Temporary Minimum Disk Route
• PAMS — Published AIP Management Systerm
• TSP — HRS Training Sub-Programme
• ANT — Air Navigation Team
• GRAF — Ground Replay and Analysis Facility
• FMIS — FTS2000 Management Information System
• FLCH — Flight Level Change
• IHST — International Helicopter Safety Team
• CASI — CFMU Aircraft Situation Image
• FAR — Federation Aviation Regulations

• LFDS — Large Facility Demarcation System
• ATCRU — Air Traffic Control Radar Unit
• TOS — Traffic Orientation Scheme
• V/M — Volts-per-meter
• GENOFIC — General North Sea Flight Information Centre
• ATIS-B — Automatic Terminal Information Service - Broadcast
• VDC — Volts, Direct Current
• MOA — Memorandum of Understanding
• REAL — Real time
• DEI — Directorate EATCHIP Implementation
• EXY — Easyjet
• VFXR(R) — Flap Retraction Speed
• 3D — Palair Macedonian
• NSAP — National Service Assurance Plan
• CAIRS — Cable Assignment Information Retrieval System
• TCT — Technical Control Terminal
• EPS — Engineered Performance Standards
• STU — Selected Trajectory Update
• CESA — Class E Surface Area
• XIN — Military Crossing Intention Notification Message
• FPPS — Flight Plan Processing System
• DMR — Data Modification Request
• AOPG — Aerodrome Operations Planning Group
• RPL — Repetitive Flight Plan
• LNAV — Lateral Navigation
• JAL — Japan Air Lines
• AEEC — Airlines Electronic Engineering Committee (ARINC)
• SA — System Administrator
• ANSA — International Advisory Group Air Navigation Services
• FMS — Fathoms
• ATCO — Air Traffic Control Officer
• ADAP — Airport Development Aid Program
• AUX — Auxilliary
• ACC-PC — ACC Planning Controller
• EFL — Entry Flight Level
• VCY — Vicinity
• RDVS — Rapid Deployment Voice Switch
• MBST — Microburst
• ITU WARC-95 — International Telecommunication Union World Radio Conference
• VS — Vocational Stabilisation
• TATCI — Tallinn ATC Improvement project
• RTQC — Real Time Quality Control
• CPF — Central Processing Facility
• DRK — Derrick
• IFPA — Instrument Flight Procedures Automation Program
• INBD — Inbound
• A/N — Arrival Notice
• CLB — Climb Detent of the Thrust Levers
• EUR — Region European Region
• COSP — Connection-Oriented Session Protocol

• ACN — Airspace Co-ordination Notification
• CAMA — Civil Aviation Medical Association
• ISASI — International Society of Air Safety Investigators
• F/G — Foreground
• WX DEF — Weather Deviation
• U — Upward
• MMS — Maintenance Monitoring System
• SFPL — Short Flight Plan
• PAD — Packet Assembler Disassembler
• TOGA — Takeoff/Go-Around
• EVS — Enhanced Visual System
• PDRP — Problem Detection and Resolution
• TTP — TCAS II Transition Program
• DDU — Display Drive Unit
• ZFW — Zero Fuel Weight
• DEPA — Departure Airfield
• A/G — Air/Ground
• EDDA — Environmental Due Diligence Audit
• ENAV — En Route Navigational Aids
• DFGS/C — Digital Flight Guidance System/Computer
• ARO — Air Traffic Service Reporting Office
• ARST — Arresting specify aircraft arresting
• BRKHIC — Breaks in Higher Overcast
• ASCII — American Standard Code for Interface and Interchange
• ATN — Aeronautical Telecommunications Network
• DPA — Distinguishing Path Attribute
• FILTIM — Date and Time Stamp of original Message
• EX GDR — ex German Democratic Republic
• CTOL — Conventional Takeoff & Landing
• RMCDE — Radar Message Conversion and Distribution Equipment
• VTOL — Vertical Take-Off and Landing aircraft
• ARSC — Air Rescue Sub Centre
• FLTCK — Flight Check
• EC — East Coast
• CAPSIN — CAA Packet Switched Integrated Network
• FMA — Flight Mode Annunciator
• WINDR — Wind Direction
• ACP — Accept Message
• ADS-R — Automatic Dependent Surveillance-Report
• TWYL — Taxiway Lights
• TMCU — Tower Main CWP Unit
• IAFP — Individual ATC Flight Plan Proposal
• SDS — Switched Data Service
• RGS — Remote Ground Station
• ABET — Airspace Behavioural Engineering Technology
• TMZ — Transponder Mandatory Zones
• CMIP — Contract Management and Inspection Procedures
• LS — Lumpsum Freight
• CAEG — Computer-aided Engineering Graphics
• HKALPA — Hong Kong Air Line Pilots Association

• AP — Airport Patrol
• GM — guidance material
• CASTA — Controller Associate for Strategic and Technical Advice
• MDA/H — Minimum Descent Altitude/Height
• MTAC — Multiple Time Around Clutter
• PZ 90 — Parameters of Earth 1990
• SUP. PRACT. — Supervised Practices
• VPAE — Vertical Profile Angle Error
• MONA — Monitoring Aids
• APPR — Approach
• IFPZ — Integrated Initial Flight Plan Processing System Zone
• SFAR-38 — Special Federal Aviation Regulation 38
• AFIS — Aerodrome Flight Information Service
• CEAC — Committee of European Airspace Co-ordination
• IFLIPS — Integrated Flight Prediction System
• FDSU — Flight Data Storage Unit
• AISG — AIS Automation Group
• AOC — Aircraft Operating Company
• ALPA-A — Air Line Pilots Association of Armenia
• DOD MIL — Department of Defence - military
• ALO — Air Force Liaison Officer
• TWDL — Two-Way DataLink
• ALCC — Airlift Central Co-ordination Centre
• ACCC — Australian Competition Consumer Commission
• TTALPA — Trinidad & Tobago Airline Pilots' Association
• CIDIN — Common ICAO Data Interchange Network
• AIR 4653 — Aerospace Information Report 4653
• CLSD — Closed
• ACIPLA — Asociacian Civil de Pilotos de Lineas Aereas
• 1 :M — One-to-Many relationship
• ARINC 528 — Airborne Tape Recorder
• RMPS — Radio Management Panels
• TCPU — Touch Panel Central Processing Unit
• IPS'S — Intellectual Proprietary Rights
• TARMAC — Taxi and Ramp Management and Control
• SAFI — Semi-Automatic Flight Inspection
• NIMS — NAS Infrastructure Management System
• XCOP — Exit Co-ordination Point
• D — Danger Area
• SANE — Skill Acquisition Network
• IFFN — Identification Friend, Foe or Neutral
• RMA — RELIABILITY MAINTAINABILITY AVAILABILITY
• AFFREIGHTMENT — The hiring of a ship in whole or part
• CAAC — Civil Aviation Administration of China
• ARNG — Arrange
• JAI — Joint Acceptance Inspection
• AACE — Airfield Approach Control Element
• AAC — Mike Monroney Aeronautical Center
• ARINC 594 — Ground Proximity Warning System
• CARAT — Center for Aviation Research and Aerospace Technology

• ETG — Enhanced Target Generator
• AEX — Automated Execution
• NR. — Number
• SSAP SELECTOR — Session Service Selector
• WSC — West Sector Co-ordinator
• CRI — Class Rating Instructor
• SSR — Solid State Relay
• XCOR — Cancel Correlation
• GMU — GPS (Height) Monitoring Unit
• TNAV — Time Navigation
• LDB — Limited Data Block
• DEMETER — Distance Measuring Equipment Tracer
• GRADE — Graphical Airspace Design Environment
• CMFO — Certificate Management Field Office
• VSAT — Very Small Aperture Satellite Terminal
• IRVR — Instrument Runway Visual Range
• FRH — Fly Runway Heading
• RCIU — Remote Control Interface Unit
• FDE-ICD — Flight Data Entry - Interface Control Document
• IPPC — Internet Pilot Planning Centre
• VA — Heading to an Altitude
• FPD — Flight Plan Database
• SCC — Satellite Control Centre
• SITA — Société Internationale Télécommunique Aéronautique
• AUSEP — Australian RNAV Separation Standards
• XMET — Cancel METAR
• VWF — Video For Windows
• FO — First Officer
• HERAS — Hellenic Radar System
• FIP — Facility Improvement Program
• ARINC 569 — Airborne Distance Measuring Equipment
• RPG — Radar Processing Group
• MALPA — Mauritius Air Line Pilots Association
• IGP — Ionospheric Grid Points
• API — FAA Office of International Aviation
• ATCCC — Air Traffic Control Command Center
• ARINC 7411P2 — Aviation Satellite Communication System: Part 2 - Satellite Design
• FMG — Frequency Management Group
• ELR — Extra Long Range
• ARTCC — Air Route Traffic Control Centre
• CYG — Cyclonic
• FEAST — First European ATCO Selection Test Package
• KB — Kilo Bytes (1,000 Bytes)
• ATFMS — Air Traffic Flow Management System
• TWR — Tower Control Unit
• FFAC — From Facility
• DISU — Drug Investigation Support Unit
• AFSFO — AFS Field Office
• LISREL — Linear Structural Relations
• LECT — Lecture

• CTA/FIR — Control Area/Flight Information Region
• CALS — Computer-aided Acquisition and Logistic Support
• AEROSAT — Aeronautical Satellite Council
• TDO — Tornado
• DSUA — Dynamic Special - Use Airspace
• ACOD — Area Conflict Detection
• ANGB — Air National Guard Base
• ADS-P — Automatic Dependent Surveillance-Panel
• ACO — Airspace Co-ordination Order
• AAATS — Australian Advanced Air Traffic Services
• U/L — Upper / Lower
• XCD — Exceptional Conditions
• SEU — Software Engineering Unit
• PIAC — Peak Instantaneous Aircraft Count
• SICTA — Italian Consortium for the Applied ATM Research
• IARR — IFPS ARR Message – Individual Arrival Message
• TTW — Time To Waypoing
• FDE — Flight Data Exchange
• ARINC 741P4 — Aviation Satellite Communications System:Part 4 - Specification and Description Language
• CL — Cost Index
• HATR — Hazardous Air Traffic Report
• LRCO — Limited Remote Communications Outlet
• CTU — Cabin Telecommunications Unit
• CATCO — Chief ATC Operations
• NL — Engine Revolutions per Minute
• FSTS — Federal Secure Telephone Service
• FPI — Fluorescent Penetrate Inspection
• APM — Accident Prevention Manual
• TDCP — Test Display and Control Panel
• BUNKERS — Name given for vessels Fuel and Diesel Oil supplies
• SIE — Standard Interface Equipment
• NTRY — Entry
• DPDG — Diplomatic and Protocol Drafting Group
• QRA — Who Are You
• DEE — Data Entry Equipment
• AECG — ACAS Evaluation and Co-ordination Group
• CGAS — Coast Guard Air Station
• FREER — Free Route Experimental Encounter Resolution
• GTPAPC — Grupo Tecnico de Pilotos Aviadores Profesionales de Cuba
• IFATCA — International Federation of Air Traffic Controllers' Associations
• E-MSAW — En Route Automated Minimum Safe Altitude Warning
• PJSA — Project Scope Agreement
• DAP — download of aircraft parameter
• AAT — Associate Administrator for Air Traffic
• ALLA — Allied Long-Lines Agency
• ACR — Air Carrier
• SSGT — Surveillance Sub-Group on Tools
• EPMB — EASIE Programme Management Board
• MTWA — Maximum Takeoff Weight Authorized
• X25 — Standard protocol in telecommunications

• FDMAS — Flight Data Management Automated System
• MEB — Main Earthing Bar
• TSIKADA — Russian four-satellite civil navigation system.
• NATCON — North Atlantic Concept
• TBS — Telephone Back-up System
• CTAM — Climb to and Maintain
• AFZ — Resource Management
• OTFO — Operations Technical Field Office
• MNPSA — Minimum Navigation Performance Specification Airspace
• AEDT — Aviation Environmental Design Tool
• CSI — Criticality Safety Index
• ACTF — Aeronautical Charting Task Force
• AIRNET — Airport Network Simulation Model
• ESYS — En Route Equipment Systems
• ACR — Atlantic Co-ordinated Route
• CDU — Control and Display Unit
• ALB — Alternative Label
• SCAT-1 APPROACH — Special Category 1 Approach
• ESDF — Environmental Static Data Processing and Distribution Function
• ATTCS — Automatic Takeoff Thrust Control Systems
• LCG — Load Classification Group
• VPIP — Vertical Intercept Point
• YSAS — Yaw Stability Augmentation System
• ATCC — Air Traffic Control Centre
• ABET — Airspace Behavioral Engineering Technology
• 4D — Four-Dimensional
• VFE — Flaps Extended Placard Speed
• IFPS — Integrated Initial Flight Plan Processing System
• CFII — Certified Flight Instructor Instrument
• FMGS — Flight Management Guidance System
• KVDT — Keyboard Video Display Terminal
• CAR — Civil Aviation Regulations
• NFIS — NAS Facilities Information System
• BARTCC — Berlin Air Route Traffic Control Centre
• ACRPWG — Aircraft Crash Recovery Procedures Working Group
• ATCU — Air Traffic Control Unit
• EPAC — Eurocontrol Programme Appraisal Committee
• HWP — Holding Waypoint
• FPM — Flight Path Monitor
• ALPA-E — Air Line Pilots Association of Ethiopia
• IІSLS — Improved Interrogation Side Lobe Suppression
• EGERIA — Engineering Group for European Integration ATC
• TWG — Training Working Group
• FDPD — Flight Data Processing and Distribution
• TCA — Terminal Conflict Alert
• ALCM — Air Launched Cruise Missile
• SOIWR — Simultaneous Operations on Intersecting Wet Runways
• CAWU — Civil Aviations Workers Union
• MAX CLB — Maximum Engine Thrust for Two-Engine Climb
• ATFR — Air Traffic Flow Regulator

• NBCAP — National Beacon Code Allocation Plan
• RX — Receiver
• AFCNF — Air Force Central NOTAM Facility
• AIRCOM — Aircraft Communications
• IFATSEA — International Federation of Air Traffic Safety Electronic Associations
• EPB — EATCHIP Project Board
• MMPI — Minnesota Multiphase Personality Inventory
• IMAL — Integrity Monitoring Alarm Limit
• TTC — Telemetry and Telecommand Centre
• AFDSS — Air Fix Data Sub Set
• ADUG — Airport Database User Group
• HELI — Heliport
• DOTCC — Department of Transportation Computer Center
• ACFO — Aircraft Certification Field Office
• PC — Period of Charter
• DESC — Descending
• CMU — Communications Management Unit
• CAMI — Civil Aeromedical Institute
• AIREP — Air-Report
• AWTA — Advise at What Time Table
• FAL — Facilitation of International Air Transport
• CFWP — Central Flow Weather Processor
• ARM — FAA Office of Rulemaking
• AGROUND — Touching or fast to the bottom
• TCWP — Threshold Crossing Way-point
• SSRC — Current SSR Code
• SFMC — Sickness Fund Management Committee
• VSP — Variable System Parameter
• EVFR — Electronic Visual Flight Rules
• FI — Iceland Air
• IAOA — Indicated Angle-of-Attack
• DDP — Distributed Data Processing
• RAPNET — Regional Aeronautical Packet
• IACS — INTERGRAPH Aeronautical Charting System
• RNLAF — Royal Netherlands Air Force (also KLu)
• HFSG — Human Factors Study Group
• EUROCAE — European Organisation for Civil Aviation Equipment
• CMIC — Civil-Military Interface Standing Committee
• AAFCE — Allied Air Forces Central Europe
• GF — Gulf Air Company - Bahrain
• CAMI — Civil Aerospace Medical Institute
• AIRMET — Air Meteorological Information Report which may affect the safety of low-level aircraft operations
• ARSA — Airport Radar Serve Area
• HDOT — Inertial Vertical Speed
• CASS — Corporate Aviation Safety Seminar
• AATF — Airworthiness Assurance Task Force
• AAC — Aeronautical Administration Communication
• TCB — Training Co-ordination Board
• GGCS — Ground/Ground Communication System
• RASP — Regional Airport System Plan

• NPM — NAS Program Manager/Management
• AMSS — Aeronautical Mobile Satellite System
• EIU — Electronic Interface Unit
• RNP-10 — Required Navigation Performance
• ARINC 569 — Heading and Altitude Sensor
• DSCS — Digital Satellite Compression Service
• FERS — Facility and Equipment Reporting System
• AWX — All Weather Fighter
• OTFP — Operational Traffic Flow Planning (aviation)
• IMO — International Maritime Organisation (UN)
• ANPAC — Associazione Nazionale Piloti Aviazione Commerciale
• MOTNE — Meteorological Operational Telecommunication Network in Europe
• EATCHIP LO — EATCHIP Liaison Officer
• GHMI — Ground Human-Machine Interface
• TMA-TC — TMA Tactical Controller
• ERV — ECM Resistant Voice
• PRQ — Pilot Request
• SVFR — Special VFR
• SASS-C — Surveillance Analysis Support System - Centre
• AOF — Allocation of Functions
• CEECS — Central and Eastern Europe Countries
• CAASA — Commercial Aviation Association of Southern Africa
• CDFA — Constant Descent Final Approach
• CFD — Change to Flight Data Message
• CMPL — complete
• DVOR — Doppler Very High Frequency Omni Directional Range
• AAMS — Aircraft Arrival Management System
• 4-MAST — 4-MAST group
• STA — Scheduled Time of Arrival
• IGA — International General Aviation
• U/S — Unservicealble
• DEVD — CFMU – Development Division
• AERA — Automated En Route Air
• ALPA — Asociacion de Pilotos de Lineas Aereas
• RW — Runway
• ALPA-S — Air Line Pilots Association - Singapore
• ATCO — Air Traffic Controllers Organization
• EWA — Error Warning Area
• PBS — Preferential Bidding System
• DUAT — Direct User Access Terminal
• ASRS — Aviation Safety Reporting System
• OE/AAA — Obstruction Evaluation/Airport Airspace Analysis
• CEFA — Co-operation for Environmentally Friendly Aviation
• ATFMC — Air Traffic Flow Management Communications
• A/L — Anti-ice
• EGALPA — Egyptian Air Line Pilots Association
• DTG — Distance-to-go
• ARMATS — State Closed Joint-Stock Company of Armenian Air Traffic Services
• LMM — Compass locator at the middle marker
• AW/P — Active Way Point

• PATWAS — Pilot's Automatic Telephone Weather Answering Service
• COSYNUS — AIRBUS Training Database
• CDTS — Console Detailed Technical Specification
• RTSE — Reliable Transfer Service Element
• EATF — EATMS Architecture Task Force
• ASC — Aviation Safety Council
• VAR — Variation Magnectic
• IAIP — Integrated Aeronautical Information Package
• TARA — Terminal Area RNAV Applications Task Force
• LDT — Logistic Delay Time
• TUM — Time Update Message
• FPLA — Flight Plan Application Section
• ANPP — Air Navigation Plan Publication
• DSCN — Direct Speech Circuit Networks
• VF — Design Flap Speed
• GEORGIAN ALPA — Georgian Air Line Pilots Association
• CFR — Crash Fire Resque
• AIRPAC — Advisor for the Intelligent Resolution of Predicted Aircraft
• PIREPS — electronic pilot reports
• AOWIR — Aircraft Operator What-If Re-routing
• AWIR — Automatically generated What-If Re-routing
• ARINC 600 — Air Transport Avionics Equipment Interfaces
• FIC — Flight Information Centre
• SPAS — System Performance Analysis System
• AIM-FANS — Airbus Interoperable Modular FANS
• RWP — Real-Time Weather Processor
• SFAR — Special Federal Aviation Regulation
• DDC — Data Display Console
• QCM — Quality Control Manager
• A&F — IFALPA Administration & Finance Committee
• LFP — Low Pass Filter
• SNICF — Subnetwork Independent Convergence Function
• IFFITAF — IFPS-DBE Functional Interface System Task-Force
• DSB — Double Side Band
• OHP — Over Head Projector
• HO — Hold Over
• FAST — Final Approach Spacing Tool
• RPR — Re-Routing Proposal Message
• MAA — maximum authorized IFR altitude
• CMSND — Commisissioned
• CAUTRA — Automated Computer System for Air Traffic
• ADEP — Aerodrome of Departure
• AFP — Area Forecast Panel
• CAAF — Civil Aviation Authority of Fiji
• FRM — Financial Resources Management Core Team
• LAF — Local Adaptation Functions
• AFIS — Automated Flight Inspection System
• STS — Support to States
• ALR — IFALPA's Airport Liaison Representative Program
• BAPA — Bangladesh Airline Pilots Association

• LTOG — Long Term Objectives Groups
• OMIC — Operations Manager in Charge
• CTAF — Common Traffic Advisory Frequency
• FISDL — Flight Information Services Data Link
• CMT — Critical Milestone Test
• APANPIRG — Asia/Pacific Air Navigation Planning and Implementation Regional Group
• CENTX — Central Telephone Exchange
• FCT — Friction Coefficient
• FC — Course from a Fix to a Distance
• HIRL — High Intensity Runway Lights
• EFF — Effective from
• NOREP — National Oceanic Review and Enhancement Program
• SNME — Subnetwork Management Entity
• TC-APD — Tactical Controller Activity Predictor Display
• AFT — At or towards the stern or rear of a ship
• ARINC 541 — Airborne Magnetic Flight Data Recorder
• AHR — FAA Office of Human Resources
• ATI — Automatic Tracking Initiation
• EIM — Enosis Iptamenon Michanikon
• GPWS — Ground Proximity Warning System
• NARACS — National Radio Communications System
• AOPG — Aerodrome Operations Group
• NAVAID — Navigational Aid
• DAC — Direction Aviation Civile
• CWS — Collision Warning System
• ARN-V2 — ATS Route Network - Version 2
• ARINC 595 — Barometric Altitude Rate Computer
• AOIS — Aeronautical Operational Information System
• ARS — Aeronautical Radio Navigation Service
• ESE — East-South-East
• COCESNA — Central American Corporation For Air Navigation Service
• ACSEP — Aircraft Certification Systems Evaluation Program
• ALTN — Alternate
• CDPS — Central Data Processing System
• AACC — Airport Associations Co-ordinating Council
• FME — Force Majeure Excepted
• CDA — Continuous Descent Arrival
• STUD — Innovative studies
• JSSI — Joint Safety Strategy Initiative
• ATIS — Aerodrome Terminal Information Service
• AACO — Arab Air Carriers Organization
• TTF — Total Flights
• VHRR — Very High-Resolution Radiometer
• BAA — British Airport Authority
• CAEP — Committee on Aviation Environmental Protection
• ATAS — Air Traffic Advisory Service
• ATCS — Advanced Train Control Systems
• CRC — Control and Reporting Centre
• ANSO — Air Navigation Services Offices
• EGU — European Gliding Union

• AENA — Spanish Airport and Air navigation Administration
• AOPTF — Aerodrome Operations Task Force
• VIVO — Visualisation des Vols Océaniques
• AACI — Airports Association Council International
• COCOS — Computer Controlled SSR Code Assignment
• ALA — Alighting Area
• RNC — Required Navigation Capability
• PATS — Precision Approach Tracking System
• DAAIS — Danger Area Activity Information Service
• EHD — Danger Area
• DOP — Daily Operations Plan
• TLX — Task Load Index
• SBSR — Space Based Secondary Radar
• EACG — European ATFM Consultation Group
• 8.33 STATE — A State initially implementing 8.33 kHz channel spacing
• RGCSP — Review of General Concept of Separation Panel
• ALR — Alerting message
• ANT — Airspace and Navigation Team
• FLOWSIM — Traffic Flow Planning Simulation
• CIMO — Committee for Instruments and Methods of Observation
• AORTF — ATM Added Functionality Operational Requirements Task Force
• OCC — Operations control center
• FAX — Facsimile Equipment
• AQAFO — Aeronautical Quality Assurance Field Office
• MALS — Medium-Intensity Approach Lighting System
• DISCH — Discharge
• FREE OUT — Free of discharge costs to owners
• TCDP — Technical Control Data Processor
• WXMS — Weather Mapping System
• IGCN — Independent Ground Communications Network
• ACT — William J. Hughes Technical Center
• OWN — TCAS II equipped aircraft - source of TCAS event
• ASPENN RPG — Aeronautical Fixed Service Planning Study EUR/NAM/NAT Regional Planning Group
• RTQC/A — Real Time Quality Control / Assessment
• FAF — Final Approach Fixes
• NAT SPG — North Atlantic Systems Planning Group
• FO — Flight Object
• A/G — Air-Ground
• CREME — Creating the EATCHIP Management Environment
• IPDS — Instrument Procedure Development System
• IKBS — Intelligent Knowledge Based System
• EPCU — Electrical Power Control Unit
• DARC — Direct Access Radar Channel
• ARINC 597A — Enhanced ACARS Avionics
• HIPERLAN — High Performance Local Area Network
• ATCEUC — Air Traffic Controllers European Unions Coordination
• EIPA — European Institute of Public Administration
• NOF — NOTAM Office