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Governmental & Military >> Aviation Abbreviations

Look through 4999 acronyms and abbreviations related to Aviation:

• XCVR — Transceiver
• DEP PROC — Departure Procedure
• GTEE — Guarantee
• XMIT — Transmit
• ACAS — Aircraft Collision Avoidance System
• OPS — Operations
• NOTAMR — Notam Replacing another Notam
• AVSEC — Aviation Security
• LAN — Local Area Network
• ADVON — Advanced Echelon
• N/A — Not Applicable
• LTHH — Liner Terms Hook/Hook (shipping)
• RAIL — Runway Alignment Indicator Lights
• BTWN — Between
• D.O.T — Department of Transport
• ETA — Estimated Time of Arrival
• OPR — Office of Primary Responsibility
• XBAR — Crossbar
• MOLCHOPT — More or Less Charterers Option
• DLOSP — Dropping Last Outwards Sea Pilot
• DCE — Data Circuit-terminating Equipment
• IROI — Instantaneous Return on Investment
• T-VASIS T — Visual Approach Slope Indicator System
• FLSA — Fair Labor Standards Act
• ABT — About
• OEM — Original Equipment Manufacturer (usually in reference to car parts)
• MIN/MAX — Minimum/Maximum
• ARINC 604 — Guidance For Design And Use Of built-In Test Equipment
• A-VDGS — Advanced-Visual Docking Guidance System
• BSS 1/1 — Basis 1 Port to 1 Port
• LRU — Line Replaceable Unit
• DFAX — Digital Facsimile
• ACCUM — Accumulate
• ROM — Read-Only Memory
• C102 (TSO) — Helicopter Radar Approach, Issued 04/02/84
• FTP — File Transfer Protocol
• ICD — Interface Control Document
• MSG — Message
• LASER — Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
• C/N0 — Carrier-to-Noise-Density Ratio
• IQ — Intelligence Quotient
• DODAR — Diagnosis, Options, Decision, Assessment and Revision
• TBA — To Be Advised
• B-RNAV — Basic Area Navigation
• DWAT — Deadweight
• IRL — Republic Of Ireland
• FTE — Full Time Equivalent
• A-VASIS — Advanced Visual Approach Slope Indicator System
• ANSI — American National Standards Institute, Inc.
• A SMGCS — Advanced Surface Movement Guidance and Control Systems

• NOTAMC — Notam Cancelling another Notam
• IT — Information Technology
• FDEDANRSAOCLONL — Freight Deemed Earned, Discountless And Non-Returnable Ship And Or Cargo Lost Or Not Lost
• ARINC 422 — Guidance For Modification Status Indicators & Avionics Service Bulletins
• R B — Range and Bearing line
• ANOVA — Analysis of Variance (statistics)
• Q.23 — Signalling system for PABX
• BA FAIR — Braking action Fair
• PPE — Personal Protective Equipment
• A/D CONVERTER — Analogue-to Digital Converter
• X-BAND — The frequency range between 8000 and 12500 MHz
• JP — Japan
• FIFO — First In, First Out
• I AND Q CHANNELS — In-phase and Quadrature channels
• MAN — Metropolitan Area Network
• EPA — Environmental Protection Agency (US)
• D-GPS — Differential Global Positioning System
• A — Ampere
• EMARSSH — Europe, Middle East, Asia Route Structure of the Himalayas
• POS REF — Position Reference
• BA NIL — Braking Action Nil
• CPU — Central Processing Unit
• XGEO — Cancel GEO
• X-WIND — Cross Wind
• PDF — Portable Document Format (created by Adobe Acrobat)
• S-SUP — Sector Supervisor
• ERDF — European Regional Development Fund
• XECM — Cancel Executive Controller Message
• XLTR — Translater
• BA POOR — Braking Action Poor
• Q PROCEDURE — Procedure to identify replacement flight plans
• EXTRAP — Extrapolate
• IFPRU — IFPS Responsible Unit
• WX — Weather
• WAYPOINT — Position in space usually on aircraft's flight plan
• PACOTS — Pacific Organised Track System
• R-CHANNEL — Random Access Channel
• HALS / DTOP — High Approach Landing System / Displaced Threshold Operations
• KAEPA — Kuwait Aircraft Engineers and Pilots Association
• W/STEP — With Step Change in Altitude
• DA/H — decision altitude/height
• JAA AMC — JAA Acceptable Means of Compliance
• OBTEX — Offboard Targeting Experiments
• IP — Internet Protocol
• M:M — Many-to-Many Relationship
• CAA SI — Civil Aviation Authority of Solomon Islands
• D-ATSU — A Downstream Air Traffic Services Unit
• D-OTIS — Data Link Operational Terminal Information Service
• QC — Quality Control
• XCOORD — Cancel Co-ordination

• P,R,D AREA — Prohibited, Restricted, or Danger Area
• LTIOV — Latest Time Information of Value
• GUI — Graphical User Interface (goo-ey)
• FAASTEAM — FAA Safety Team
• SMEQ — Subjective Mental Effort Questionnaire
• T-ATSU — Transferring ATS Unit
• W/MOD — With Modification of Vertical Profile
• B/CRS — Back Course
• XASM — Cancel Assume
• F&CM — Flow And Capacity Management
• M-ADS — Modified Automatic Dependent Surveillance
• D-TO NL — Derated Takeoff Engine Fan Speed
• MOU — Memorandum of Understanding (an MOU between Food & Drug Administratin and a regulatory agency in another country allows mutual recognition of inspections)
• VAFORIT — VAFOR Implementation
• CAA NZ — Civil Aviation Authority of New Zealand
• NAAPE — National Association of Aircraft Pilots and Engineers
• CAA PNG — Civil Aviation Authority of Papua New Guinea
• MOA — Memorandum Of Agreement
• XCONF — Delete CONFlict
• R,E&D — Research, Engineering and Development
• FANOMOS — Flight track and Aircraft NOise Monitoring System
• DAARWIN — Distributed ATM Architecture based on
• O&M — Operation and Maintenance
• T-CHANNEL — Time Division Multiple-Access Channel
• RAARR — Radar Arrival
• XOFF/PDR — Cancel Off Predetermined Route
• ARINC 424 — Navigation System Data Base
• IRR — Internal Rate of Return
• C/S/S/N — Capacity/Safety/Security/Noise
• O-QAR — Optical Quick Access Recorder
• V/TRK — Vertical Track
• EGATS — Eurocontrol Guild of Air Traffic Services
• FAQ — Frequently Asked Questions (sometimes Pronounced Fak)
• JAAC/JAA CE — JAA Committee
• GALPA — Ghanaian Air Line Pilots Association
• I(FD) — MTI Improvement Factor
• MLS — Microwave Landing System
• EDI — Electronic Data Interchange
• R-ATSU — The Receiving Air Traffic Services Unit
• SAAFEA — South African Airways Flight Engineers Association
• R&D — Research & Development
• RF — Radio Frequency
• HIRL — High Intensity Runway Lights
• XNSSR — Exit NSSR
• MTBF — Mean Time Before Failure
• XMITR — Transmitter
• BAHAMAS ALPA — Bahamas Airline Pilots Association
• SOP — Standard Operational Procedure
• LOI — Letter Of Intent
• XFRQ — Cancel FreQuency message

• CV — Curriculum Vitae
• PALLAS — Phased Automation of the Hellenic ATC System
• EAMG SSG — EAMG Systems Sub-Group
• SMTP — Simple Mail Transfer Protocol
• P.T.T — Push-to-Talk
• M/ASI — Mach/Airspeed Indicator
• IA-5 — International Alphabet Number 5
• XBRIGHT — Cancel highlighting
• LOV — List Of Values
• LABSW — LABS Switch System
• HADAMARD — Multi-radar processing written in ADA
• OJT — On the Job Training
• DZ — Algeria
• IA/CC — Indirect Access/Common Control
• LABSC — LABS GS-200 Computer
• XIFL — Cancel Intermediate Flight Level
• P… — Prohibited Area
• P.ACCS — Pairs of ACCs
• XFDM — Cancel FDM
• DEC — Digital Equipment Corporation
• CRT — Cathode Ray Tube (type of TV)
• XHOLD — Cancel Hold
• VAT — Value Added Tax
• LABSR — LABS Remote Equipment
• I/AFSS — International AFSS
• EEO — Equal Employment Opportunity
• CTRL — Control
• AAF-1 — Director of Airway Facilities
• BAREBOAT CHTR. — Bareboat Charter
• EANPG — Regional European Air Navigation Planning Group
• HALPA — Hellenic Air Line Pilots Association
• EAD SGR — EAD Sub-Group
• AAGDI — Automated Air Ground Data Interchange
• DAMFORDET — Damages for Detention
• VBFNG(HI) — High speed CAS at N g's to buffet onset
• VBFNG(LO) — Low speed CAS at N g's to buffet onset
• HBARO — Barometric Altitude
• AHRS — Attitude Heading Reference System
• FAACIS — FAA Communications Information System
• JAAB/JAA-B — Joint Boards
• JAARC — JAA Research Committee
• PALPU — Pancyprian Airline Pilots Union
• COD — Cash On Delivery
• VBF(LO) — Flaps up minimum buffet speed at current maneuver load factor minus altitude dependent variable
• ARPA — Advanced Research Projects Agency (made early internet)
• XEXPLT — Cancel Extrapolation
• CAP — Civil Air Patrol
• FY — Fiscal Year
• FYI — For Your Information
• C87A — Low Range Radar Altimeters, Issued 01/01

• C91A — Emergency Locator Transmitter, Issued 04/85
• NPV — Net Present Value {economics}
• PAQ — Position Analysis Questionnaire
• SOW — Statement Of Work
• GIS — Geographic Information System
• DARP(S) — Dynamic Airborne Route Planning (System)
• KARLDAP — Karlsruhe Automatic Data Processing and Display System
• JALPA — Jamaica Air Line Pilots Association
• DATALINK — Digitized Information Transfer (air/ground)
• EAPTU — Air Line Pilots Trade Union
• HAWOP — Helicopter All-Weather Operations Study Group
• AFDK — After Dark
• DE — Germany
• ADP — Automated Data Processing
• 2H — Second Half
• NBFR — Not Before
• CIP — Carriage and Insurance Paid to
• ARINC 610 — Guidance For Design and Integration of Aircraft Avionics Equipment In Simulators, Supplement 1
• LOB — Line Of Business
• ELBA — Emergency Location Beacon-Aircraft
• NADSW — NADIN Switches
• PCB — printed circuit board
• DABRK — Daybreak
• AOG — Aircraft On Ground
• TBD — To Be Determined
• EADCOS — EAD Co-ordination Group
• FACUTL — Facility Utilization System
• CFE — Customer-Furnished Equipment
• EU — European Union (1994; formerly referred to as the EEC or EC)
• DOD — United States Department of Defense
• PDA — Personal Digital Assistant
• LOA — Letter Of Agreement
• CDC — Computer Display Channel
• GPS — Global Positioning System (ex-NAVSTAR)
• IANSSC — IANS Steering Committee
• ACK — Acknowledge (telecommunications; Cf. NAK)
• ATA — Area Transportation Authority
• WWW — World Wide Web
• EU-OPS — EASA Operations Regulations
• IDP — Individual Development Plan
• ESA — European Space Agency
• ACFT — Aircraft
• IBM — International Business Machines Corporation
• HDLTSBENDS — Half Despatch Lay Time Saved Both Ends
• RNG — Range
• CIO — Chief Information Officer
• DOT — Department of Transport
• ISDN — Integrated Services Digital Network
• DSS — Decision Support System
• PRE-OJT — Pre-On-the-Job Training

• QMS — Quality Management System
• ASM — Available Seat Mile
• IMF — International Monetary Fund
• LADGPS — Local Area Differential Global Positioning System
• ERP — Emergency Response Plan
• FAR — Federal Acquisition Regulation
• QTY — Quantity
• NTSB — US National Transportation Safety Board
• CUG — Closed User Group
• ATCRBS — Air Traffic Control Radar Beacon System
• CHOPT — Charterers Option
• SAR — Search And Rescue
• AAL — Above Aerodrome Level
• GNP — gross national product (economics)
• FAA — Federal Aviation Administration
• SAN — Storage Area Network
• ICAO — International Civil Aviation Organization
• LVL — Level
• FDP/RDP — Flight Data Processing/Radar Data Processing
• DDU — Delivery Duty Unpaid
• FLT — Full Liner Terms
• CTR — Center
• AGL — Above Ground Level
• B/L — Bill of Lading
• QOS — Quality of Service
• ATHWARTSHIPS — At right angles to the centreline of the ship
• EXPLT — Extrapolate
• KE — Kenya
• MTTR — Mean Time To Repair
• IWL — Institute Warranty Limits
• FAS — Free Alongside Ship
• EXW — Ex Works
• BAF — Belgian Air Force
• FOB — Free On Board
• Q&A — Question & Answer
• APR — April River Airport, April River, Papua New Guinea
• CBT — Computer Based Training
• IATA — International Air Transport Association
• OUTB — Outbound
• KG — Kilogram
• PALS — Precision Approach Lighting System
• ATC — Air traffic control
• CONUS — Continental United States (48 Contiguous States and DC)
• DRAM — Dynamic Random Access Memory (dee-ram) (computing)
• VCRI — Verification Cross Reference Index
• PRI — Primary Rate Interface (ISDN)
• ADC — Air Data Computer
• RCR — Runway Condition Reading
• CQD — Customary Quick Despatch
• GSA — U.S. General Services Administration

• FDD — Freight Demurrage Deadfreight
• BVR — Beyond Visual Range
• CFR — Code of Federal Regulations
• NATO — North Atlantic Treaty Organisation
• CISO — Chief Information Security Officer
• TSTMS — Thunderstorms
• MHZ — Megahertz (Megacycles Per Second)
• INFO — Information
• COOP — Continuity of Operations
• BOD — Beneficial Occupancy Date
• DEBRIEF — Debriefing
• AMSL — Above Mean Sea Level
• CNEE — Consignee
• UA — Ukraine
• IAEA — International Atomic Energy Agency
• ARINC 753 — HF Data Link System
• PM — Preventive Maintenance
• POS INIT — Position Initialization
• WAN — Wide Area Network
• COGSA — U.S. Carriage of Goods by Sea Act
• OMB — Office of Management and Budget (U.S.)
• ALSTG — Altimeter Setting
• MSL — Mean Sea Level
• AGW — All Going Well
• LED — law enforcement desk; light emitting diode
• 16PF — Sixteen Personality Factor Questionnaire
• BPS — bits per second
• LNG — Liquefied Natural Gas
• HAZMAT — Hazardous Material
• LOI — Letter of Indemnity
• ALT — Alternate
• CPT — Carriage Paid To
• FOIA — Freedom of Information Act
• LOCID — Location Identifier
• ITU — International Telecommunication Union
• TC/OC — Technical Control and Operational Control
• ETS — Estimated Time of Sailing
• LSD — Lashed Secured Dunnaged
• ATA — Actual Time of Arrival
• SQL — Structured Query Language
• DDE — Dynamic Data Exchange (in software parlance)
• ACMS — Aircraft Condition Monitoring System
• AED — Automated external defibrillator
• IM — Information Management
• CM — Centimeter
• CEP — Circular Error Probable
• W — Watt
• EXTRM — Extreme
• BCR — Benefit/Cost Ratio
• HQ — Headquarters (HDQ Preferred)

• DML — Data Manipulation Language
• FCC — Federal Communications Commission (US)
• AC — Air Canada
• CAA — Civil Aviation Authority
• D-ATIS — Digital - Automatic Terminal Information Service
• ADSY — Administrative Equipment Systems
• DOS — Disk Operating System
• GE — Georgia
• ALSF-2 — High Intensity Approach Lighting Systerm with Sequenced Flashing Lights.
• APU — Auxiliary Power Unit
• IR — Islamic Republic of Iran
• COS — Chief of Staff
• IFB — Invitation For Bid
• S — South
• CZ — Czech Republic
• HZ — cycles per second (hertz)
• TTG — Time-To-Go
• 1 PPS — One Pulse Per Second
• ETC — Estimated Time of Completion
• SALS — Short Approach Lighting System
• AT&T — American Telephone and Telegraph (U.S. company, also known as "Ma Bell")
• DR — Disaster Recovery
• SVC — Service
• ADDENDUM — Additional chartering terms at the end of a charter party
• EEG — Electro-EncephaloGram
• EBCDIC — Extended Binary Coded Decimal Interchange Code (pronounced Eb-see-dik) (cf. BCD)
• OPM — Office of Personnel Management
• AFCS — Automatic Flight Control System
• HUMS — Health and usage monitoring systems
• CAF — Currency Adjustment Factor
• PDN — Public Data Network
• DVOF — Digital Vertical Obstruction File
• UN — United Narions
• GMT — Greenwich Mean Time (Zulu)
• FIM — Fault Isolation Manual
• MTTF — Mean Time To Failure
• CGL — Circling Guidance Light
• TTL — Transistor-Transistor Logic
• RVR — Runway Visual Range
• ARINC 743 — Airborne Global Positioning System Receiver
• K — Kilo-
• NOTAMN — New Notam
• EG — Egypt
• APAPI — Abbreviated Precision Approach Path Indicator
• BRI — Basic Rate Interface
• IFTO — International Federation of Tour Operators
• CAT — Category (e.g. CAT-5 cable)
• PSTN — Public Switched Telephone Network
• COTR — Contracting Officer Technical Representative
• AO — Authorizing Official

• CMO — Certificate Management Office
• RESA — Runway End Safety Area
• PER SE — By Itself
• SMS — Safety Management Systems
• CIF — Cost, Insurance, Freight
• RISC — Reduced Instruction Set Computer
• IR — Iran Air
• MIPS — Millions of Instructions Per Second
• COA — Contract Of Affreightment
• TX / RX — Transmitter / Receiver
• AOR — Area of Responsibility. The assigned area to any given unit.
• MBO — Management by Objective
• NOAA — National Oceanic and Atmospheric Administration (US)
• ACPT — Accept
• DHDATSBE — Despatch Half Demurrage on All Time Saved Both Ends
• KBS — Knowledge-Based System
• MIL — Military
• VHF — Very High Frequency
• RSPL — Recommended Spare Parts List
• CASE — computer-automated software engineering
• L/C — Letter of Credit
• NM — Nautical Mile
• ALT — Altitude
• DME — Distance Measuring Equipment
• EIS — Environmental Impact Statement (US)
• PDPR — Per Day Pro Rata
• BELOW — Beneath the deck
• SAE — Society of Automotive Engineers
• DK — Deck
• GEN — General Motors
• LIDO — Lufthansa Integrated Dispatch Operation
• GPO — Government Printing Office
• PBX — Private Branch eXchange (company phone system)
• CPIC — Capital Planning and Investment Control
• UPU — Universal Postal Union
• AF — Air Force
• DBMS — Data Base Management System
• RFQ — Request For Quote
• EXER — Exercise
• AVMED — Aviation Medicine
• LEO — Low Earth Orbit (satellite communications)
• DEC — December
• EMS — Environmental Management Systems
• DDP — Delivered Duty Paid
• HU — Hungary
• MCE — Management Centre Europe
• ACD — Automatic Call Distributor
• COBT — Calculated Off Block Time
• CCSD — command communications service designator; control communications service designator
• ASR — Airport Surveillance Radar

• EPR — Engine Pressure Ratio
• SWIM — System Wide Information Management
• CAVU — Ceiling And Visibility Unlimited
• LEC — Local Exchange Carrier
• ETD — Estimated Time of Departure
• FD — Flight Director
• RLLS — Runway Lead-In Light System
• APS — Arrival Pilot Station
• NEG — NEGative
• IS — Iceland
• MIN — Minimum
• DIST — Distance
• EMP — Electromagnetic Pulse
• CU — Control Unit
• MK — Republic of Macedonia
• ARINC 542 — Airborne Oscillograph Flight Data Recorder
• USAF — United States Air Force
• CFR — Cost and Freight
• ENG — Engine
• ARINC 419 — Digital Data System Compendium
• DRP — Disaster Recovery Plan
• ITIL — Information Technology Infrastructure Library
• RCM — Requirements Correlation Matrix
• KW — Kilowatt (one thousand watts) (measurement)
• WAC — World Aeronautical Chart
• DOLSP — Dropping Off Last Sea Pilot
• RTE — Route
• CRF — Central Repair Facility
• BY — Belarus
• AIRNAV — Airports and Navigation Aids Database System
• TCP — Transmission Control Protocol
• ARINC 561 — Air Transport Inertial Navigation System - INS
• MRC — Monthly Recurring Charge
• ADS-C — Automatic Dependent Surveillance-Contract
• FAC — Facilities
• CM — Configuration Management
• HUM RES — Human Resources
• DES — Delivered Ex Ship
• NOR — Notice of Readiness
• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• MAINT — Maintenance
• ETO — Estimated Time Over
• ARINC 429 — Mark 33 Digital Information Transfer System
• SNR — Signal-to-Noise Ratio
• OPI — Office of Primary Interest
• KHZ — kilohertz (1000 cycles per second)
• DAFIF — Digital Aeronautical Flight Information File
• ELINT — Electronic Intelligence Satellite
• AE — Application Entity
• 2D — Two-Dimensional

• CAT — Computer Aided Testing
• WT — Weight
• ETE — Estimated Time En Route
• PVC — Permanent Virtual Circuit (ATM)
• EFTA — European Free Trade Association (Geneva)
• MAX — Maximum
• EAS — Equivalent Airspeed
• LF — Low Frequency
• FAR — Federal Aviation Regulation
• CDB — Corporate Database
• TV — Television
• CONOPS — Concept of Operations
• RMNDR — Reminder
• CKD — Completely Knocked Down
• EW — Eurowings
• RDP — Radar Data Processing
• AOM — Aircraft Operating Manual
• PABX — private automatic branch exchange (telephone)
• FD — Free Discharge
• OO — SkyWest Airlines
• EBU — Engine Build Unit
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• CW — Continuous Wave
• CDL — Configuration Deviation List
• RMS — root mean square (preferred over "RMS")
• BW — Bandwidth
• PRN CODE — Pseudo Random Noise Code
• CAT X — Category x Precision Approach
• DRAUGHT — Depth to which a ship is immersed in water
• MODEM — Modulator-Demodulator
• N — North
• HWCI — Hardware Configuration Item
• COTS — Commercial Off the Shelf Software
• DMA — direct memory access (computer term)
• BAF — Bunker Adjustment Factor
• PCT — Percent
• LAT — Latitude
• P&I — Protection and Indemnity insurance
• AFSPS — Arrival First Sea Pilot Station
• TK — Turkish Airlines
• FT — Feet
• ARINC 743A — GPS/GLONASS Sensor
• IFF — Identification Friend or Foe (radar)
• E — East
• XFR — Transfer
• CRS — Course
• AA — Always Afloat
• CI — China Airlines - Taiwan
• AVG — Average Voltage Gain
• ADZY — Advisory

• MBPS — Megabits per second
• ANS — Answer
• CRM — Crew Resource Management
• SNGL — Single
• LUX — Findel International Airport, Luxembourg-Findel, Luxembourg
• EFQM — European Foundation for Quality Management's
• QUIS — Questionnaire for User Interface Satisfaction
• WO — Without
• MSA — Minimum Safe Altitude
• I/O — Input/Output
• FAA — Federal Aviation Authority
• DEQ — Delivered Ex Quay (shipping)
• C — Centigrade
• BDI — Both Dates Inclusive
• POS — Position
• MSDA — Material Safety Data Sheet
• ARINC 408A — Air Transport Indicator Cases And Mounting
• CY — Cyprus Airways Ltd
• NRL — Naval Research Laboratory
• RCU — Remote Control Unit
• DFDAU — Digital Flight Data Acquisition Unit
• FDOD — CFMU – Flight Data Operations Division
• FMC — Federal Maritime Commission's
• ATFM — air traffic flow management
• EGA — Enhanced Graphics Adapter
• JCN — Job Control Number
• ADDS — Aviation Digital Data Service
• CLR — Clear
• NPRM — Notice Of Proposed Rule Making
• HDOP — Horizontal Dilution of Precision
• EVM — Earned Value Management
• NTE — Not-To-Exceed
• FO — For Orders
• OSI — Open Systems Interconnection (iso Standard)
• BIT(E) — Built-ln-Test (Equipment)
• LY — El Al Israel Airlines
• ITSM — Information Technology Service Management
• SRV — Server
• CN — Change Notice
• MMU — Memory Management Unit
• OU — Croatia Airlines
• STTR — Small Business Technology Transfer
• SEQ — Sequence
• TOT — Total
• AT&T CSA — At&t Customer Support Associate
• ITMRA — Information Technology Management Reform Act (Part of the Clinger-Cohen Act)
• RMS ERROR — Root Mean Square error.
• RNP5 — Required Navigation Performance 5
• FOUO — For Official Use Only
• AFA — Association of Flight Attendants

• FRS — Functional Requirements Specifications
• DPI — Dots per inch.
• CMC — Central Maintenance Computer
• EPROM — Erasable Programmable Read-Only Memory
• OTFO — Operations Technical Field Office
• GSE — Ground Support Equipment
• FOFFER — Firm Offer
• ARINC 747 — Flight Data Recorder
• RAIM — Receiver Autonomous Integrity Monitoring
• DHDWTSBE — Despatch Half Demurrage on Working Time Saved Both Ends
• AAIM — Aircraft Autonomous Integrity Monitoring
• EST — Estimated Starting Time
• PAR — Precision Approach Radar
• FOT — Free On Truck
• PMP — Project Management Plan
• IPT — Integrated Product Team
• CX — Cathay Pacific Airways
• YD — Yaw Damper
• ADF — Automatic Direction Finder
• ATDNSHINC — Any Time Day/Night Sundays and Holidays Included
• AF — Air France
• AOM — Aircraft Operations Manual
• PQP — Project Quality Plan
• ISA — International Standard Atmosphere
• ATMAC — Air Traffic Management Advisory Committee
• NEPA — National Energy Policy Act of 1992
• LDAP — Lightweight Directory Access Protocol (pronounced Ell-dap)
• ARINC 597 — Aircraft Communications Addressing And Reporting System
• AIXM — Aeronautical Information Exchange Model
• AAAA — Always Accessible Always Afloat
• RSVN — Reservation
• R — Right
• BM — Beam
• DDD — Detailed Design Document
• CGL — Circling Guidance Lights
• SCADA — Supervisory Control And Data Aquisition
• L — Left
• HMI — Human Machine Interface
• WOCL — Window of Circadian Low
• AY — Finnair, Oyj - Finland
• PRF — Pulse Repetition Frequency
• ACT — Active
• CG — Center of Gravity (DXS)
• ITF — International Transport Workers' Federation
• CDU — Control Display Unit
• LOA — Length Overall
• NOV — November
• MIRL — Medium Intensity Runway Lights
• EFMS — Experimental Flight Management System
• VSCF — Variable-Speed Constant Frequency

• AFB — Air Force Base (USAF)
• A/C — Aircraft
• CONS — consumption
• DTED — Digital Terrain Elevation Data (dee-ted)
• A02 — Automated Observation With Precipitation Discriminator
• ASD — Aircraft Situation Display
• AUTOCAD — Automatic Computer Aided Design
• RDIF — Radar Data Interchange Format
• IRU — Inertial Reference Unit
• ACARS — Aircraft Communications Addressing and Reporting System
• BL — Bale
• CVR — Cockpit Voice Recorder
• KE — Korean Airlines
• AEA — Association of European Airlines
• ADC — Air Defense Command
• ARINC 573 — Aircraft Integrated Data System Mark
• AOCS — Attitude and Orbit Control System
• CAVOK — Ceiling And Visibility OK (Kav-okay)
• LT — Liner Terms
• KM — Kilometer (1,000 meters)
• NESDIS — National Environmental Satellite, Data, and Information Service
• IMA — Integrated Modular Avionics
• CW — Clockwise
• NAVDB — Navigation Data Base
• ERP — Effective Radiated Power
• IFOR — Implementation Force
• TGT — Target
• HDLC — High-Level Data Link Control
• NAAQS — National Ambient Air Quality Standards (US)
• NACA — National Advisory Committee for Aeronautics
• FSRM — Facility Security Risk Management
• WO — World Airways, Inc
• HF — High Frequency
• FLT — Flight
• AIP — Aeronautical Information Publication
• ADIRS — Air Data Inertial Reference System
• ARINC 575 — Mark 3 Subsonic Air Data System
• CPDLC — Controller Pilot Data Link Communications
• IN.HG. — inches of mercury
• EASA — European Aviation Safety Agency
• TBO — Time Between Overhaul
• DOP — Dropping Outward Pilot
• W — West
• NRT — Net Restricted Tonnage
• EHF — Extremely High Frequency
• BRK — Break
• ILO — International Labour Organisation
• PCM — Pulse-Code Modulation
• DGNSS — Differential Global Navigation Satellite System
• GFE — Government-Furnished Equipment

• ATD — Actual Time of Departure
• AWB — Air Waybill
• AHL — Australian Hold Ladders
• ARINC 603 — Airborne Computer Data Loader
• AVAIL — Available
• RNP — Required Navigation Performance
• FCL — Full Container Load
• JAN — January
• 3D — Three Dimensional
• DOS — United States Department of State
• GHZ — Gigahertz
• ACN — Aircraft Classification Number
• BR — Eva Airways Corporation
• WG — Working Group
• IF — Intermediate Frequency
• DH — Decision Height
• ANG — Air National Guard
• OVERBOARD — Over the side or out of the ship
• CW — Carrier Wave
• FACF — Final Approach Course Fix
• FREE EXINS — Free of any Extra Insurance
• LH — Lufthansa German Airlines
• DEA — Drug Enforcement Agency
• RDF — Radio Direction Finder
• NAS — National Airspace System
• GW — Gross Weight
• REQ — Request
• NW — Northwest Airlines
• NOTAM — Notice to Airmen
• AUG — August
• LZ — Balkan Bulgarian Airlines
• ALQDS — All Quadrants
• MAA — Maximum Authorized Altitude
• DDM — Difference in Depth of Modulation
• FANS — Future Air Navigation System
• MTBCF — Mean Time Between Critical Failures
• ARINC 557 — Airborne Voice Recorder
• DID — direct inward dial
• PHA — Preliminary Hazard Analysis
• BL — Blowing (METAR descriptor)
• EET — Estimated Elapsed Time
• VAN — Value Added Network
• ASTERIX — All-purpose Structured Eurocontrol Radar Information Exchange
• CPD — Continuous Professional Development
• DNRCAOSLONL — Discountless and Non-Returnable Cargo and/or Ship Lost or Not Lost
• HIRO — High Intensity Runway Operation
• LIDAR — Lander Light Detection and Ranging
• CCITT — Comite Consultatif International de Telegraphique et Telephonique (International Telegraph and Telephone Consultative Committee) [now ITU-T]
• LF — Load Factor
• CCU — Central Control Unit

• ECAM — Electronic Centralized Aircraft Monitor
• BADA — Base of Aircraft Data ; Aircraft performance Data
• FZRA — Freezing Rain (METAR Code)
• PAPI — Precision Approach Path Indicator (aviation)
• FRB — Failure Review Board
• NCS — National Communications System
• AVOL — aerodrome visibility operational level
• FOD — Foreign Object Damage
• VSWR — Voltage Standing Wave Ratio
• NFPA — National Fire Protection Association
• OK — Czech Airlines
• GPRA — Government Performance and Results Act
• RSYD — Release Subject to Your Discretion
• PKI — Public Key Infrastructure (cryptography)
• DDS — Digital Data Service
• OGC — Open Geospatial Consortium
• AEW — Airborne Early Warning
• EIB — European Investment Bank
• BOFFER — Best Offer
• F — Degrees Fahrenheit
• ADCCP — Advanced Data Communications Control Procedures
• FP — Flight Plan
• FADEC — Full Authority Digital Engine Control
• DHS — Department of Human Services
• CPD — Charterers Pay Dues
• ARINC — Aeronautical Radio Incorporated
• BOW — The forward part of a ship
• A&E — Architecture and Engineering
• ISMLS — Interim Standard Microwave Landing System
• ARINC 740 — Multiple-Input Cockpit Printer
• NASA — National Aeronautics and Space Administration (US)
• SN — Brussels Airlines
• BRG — Bearing
• A/A — Air-to-Air
• CDI — Course Deviation Indicator
• ABV — Above
• FONSI — Finding of no significant impact. See Environmental impact statement (US)
• EADI — Electronic Attitude Director Indicator
• MOLOO — More or Less Owners Option
• WPM — speech--words per minute
• HIRTA — High Intensity Radio Transmission Area
• CEQ — Council on Environmental Quality (U.S.)
• ARINC 542A — Digital Flight Data Recorder
• OCT — October
• DR — Dead Reckoning
• TOR — terms of reference (ICAO/FAA)
• SU — Aeroflot Russian Airlines
• EXEC — Execute
• MIT — Massachusetts Institute of Technology (U.S.)
• TLV — Type-Length-Value

• MDT — Mean Down Time
• ALSF2 — ALS with Sequenced Flashers II
• SID — Standard Instrument Departure
• CVSM — Conventional Vertical Separation Minimum
• MAN — Manual
• ARINC 572 — Mark 2 Air Traffic Control Transponder
• AFS — Aeronautical Fixed Service
• CAASA — Commercial Aviation Association of Southern Africa
• LLWAS — Low Level Wind Shear Alert System
• MEL — Minimum Equipment List
• FQR — Formal Qualification Review
• FEC — Forward Error Correction
• MCW — Modulated Continuous Wave
• HGT — Height
• AD — airworthiness directives (FAA)
• A/D — Analog-to-Digital
• ARINC 601 — Control/Display Interfaces
• BROB — Bunkers Remaining on Board
• ARO — Air Traffic Services Reporting Office
• 1 :1 — One-to-one relationship
• HMI — Hazardously Misleading Information
• FRT — Freight
• DCA — Defensive Counter Air
• ARINC 566 — Airborne VHF Communications Transceiver And Mark 1 VHF SATCOM System
• MDA — Minimum Descent Altitude
• DETRESFA — distress phase (lCAO)
• CUST — Customs
• PPI — Plan Position Indicator
• NAS — National Aircraft Standard
• AIDC — Air traffic control Inter-Facility Ground Data Communications
• XEU — European Currency Unit
• SHF — Super High Frequency
• CLD — Cloud
• ARINC 421 — Guidance For Standard Subdivision of ATA Spec 100 Numbering System for Avionics
• MTTRP — Mean Time to repair product
• FZFG — Freezing Fog
• CIRM — International Radio Maritime Committee
• PFD — Primary Flight Display
• BWAD — Brackish Water Arrival Draft
• SARPS — Standards and Recommended Practices
• BOC — Bell Operating Company
• ALERFA — alert phase
• ODALS — Omnidirectional Approach Lighting Systems
• ALP — Airport Layout Plan
• SH — Showers
• FL — Flight Level
• NPS — Navigation Performance Scales
• AFSS — Automated Flight Service Station
• WP — Work Package
• GDOP — Geometric Dilution Of Precision

• C — Close
• ANSP — Air Navigation Service Provider
• AD — Aerodrome
• ELT — Emergency Locator Transmitter
• LOFT — Line-Oriented Flight Training
• CHTRS — Charterers
• AACO — Arab Air Carriers Organisation
• W — White
• FZDZ — Freezing Drizzle
• VMIN — Basic Clean Aircraft Minimum CAS
• DOI — United States Department of Interior
• MAG — Magnetic
• EDF — Electricité de France
• UL — Uplink
• MECO — Main Engine Cutoff
• AOB — Air Order of Battle
• PA — Pan American Airways
• ULR — Ultra Long Range
• TYPH — Typhoon
• FF — Fuel Flow
• NI — Network Interface
• CDRL — Contracts Data Requirements List
• TDMA — Time Division Multiple Access
• CAT — Clear Air Turbulence
• AC — Altocumulus
• CTA/FIR — Control Area/Flight Information Region
• ARTCC — Air Route Traffic Control Center
• DA — Disbursement Account
• ECAC — European Civil Aviation Conference
• ATLA — Air Transport Licensing Authority
• SS 30 — 30 Minutes after Sunset
• EPCU — Electrical Power Control Unit
• ARINC 750 — VHF Data Radio
• MDO — Marine Diesel Oil
• MRA — Minimum Reception Altitude
• SEP — September
• A&P — Airframe & Powerplant
• DAF — Deliver At Frontier
• GA — General Aviation
• SV — Space Vehicle
• IDS — Intrusion Detection System
• FEIS — Final Environmental impact statement (US)
• TEMP — Temperature
• AP — Airport
• PERF — Performance
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• FIS — Flight Information Service
• VGND — Ground Velocity
• CSD — Constant Speed Drive
• AIRPROX — The code word used in air traffic incident report to designate aircraft proximity

• HIWAS — Hazardous Inflight Weather Advisory Service
• RTOS — Real-Time Operating System
• VSBY — Visibility
• RM — Risk Management
• AFFSC (E) — Air Forces Flight Safety Committee (Europe)
• CBI — Computer Based Instruction
• GS — Ground Speed
• B — Blue
• ARINC 571 — Inertial Reference System
• AWIPS — Advanced weather Interactive Processing System (NOAA)
• ACCT — Accounting Records
• T — Time
• LW — Low Water
• FLTCK — Flight Check
• SP — Space
• SSALS — Simplified Short Approach Lighting Systerm
• PRKG — Parking
• QPSK — aeronautical quadrature phase shift keying
• SDLC — Software development life cycle
• DEIS — Draft Environmental Impact Statement (US)
• PII — Personally Identifiable Information
• TTY — Teletype Telex Machine
• ACM — Airspace Control Measures
• SSEC — Static Source Error Correction
• AUTOVON — Automatic Voice Network
• ARINC 591 — Quick Access Recorder For Aids System
• SAW — Surface Acoustic Wave
• AQP — Advanced Qualification Program
• FLAS — Flight Level Allocation Scheme
• BCA — Benefit/Cost Analysis
• AVBL — available
• COACP — Contract Of Affreightment Charter Party
• CPS — characters per second
• FSS — Flight Service Station
• BENDS — Both Ends (shipping)
• A/C — Aircraft Commander
• RNP-10 — Required Navigation Performance
• MLW — Maximum Landing Weight
• 5LNC — Five Letter Name Code
• FMC — Flight Management Computer
• SBIR — Small Business Innovation Research
• CAP — Combat Air Patrol
• BA — Braking Action
• 8.33 STATE — A State initially implementing 8.33 kHz channel spacing
• SITA — Société Internationale de Télécommunications Aéronautiques
• Z — Zulu (Greenwich mean time)
• POL STAT — Policy Statement
• INS — Inertial Navigation System
• ND — Navigation Display
• TAS — True Airspeed

• HZ — Haze (METAR Code)
• GCA — Ground-controlled approach
• JPDA — Joint Probabilistic Data Association
• TCA — Terminal Control Area
• CFAR — Constant False Alarm Rate
• DBS — Direct Broadcast Satellite
• ILSP — Integrated Logistics Support Plan/Program
• RFC — Request For Change
• LGTD — Lighted
• NASTEP — National Airspace System Technical Evaluation Program
• NAABSA — Not Always Afloat But Safely Aground
• OT&E — Operational Test and Evaluation
• ADIZ — Air Defense Identification Zone
• ATCSCC — Air Traffic Control System Command Center
• IMC — Instrument Meteorological Conditions
• TCU — Towering Cumulus
• ARINC 606 — Guidance For Electrostatic Sensitive Device Utilisation & Protection, Sup. 1
• EIA — Extended Interaction Amplifier
• MMEL — Master Minimum Equipment List
• ADV — Advise
• FEP — Front End Processor
• ARINC 559A — Mark 2 Airborne HF SSB/AM System
• IISLS — Improved Interrogation Side Lobe Suppression
• GBAS — Ground Based Augmentation System
• HEX — Hexadecimal (base 16)
• NORDO — No-Radio
• HUD — Head-Up Display
• CDT — Command Delivery Time
• DIR — Directory
• FOQ — Free On Quay
• V — Volt (measurement)
• ID — IDentifier
• ARINC 757 — Cockpit Voice Recorder
• FRA — Federal Railroad Administration
• IPV6 — Internet Protocol Version 6
• CARSR — Common Air Route Surveillance Radar
• EEI — Essential Elements of Information
• DEM — German mark
• AWACS — Airborne Warning And Control System
• DNIC — Data Network Identification Code
• VDF — Very high frequency Direction Finding station
• FYG — For Your Guidance
• ARINC 744 — Full Format Printer
• VMC — visual meteorological conditions
• FFA — Functional Failure Analysis
• PF — Pilot Flying
• AT — Air Traffic
• MCT — Maximum Continuous Thrust
• MVFR — Marginal Visual Flight Rules
• KBPS — kilobits per second

• FPL — Full Performance Level
• CTR — Container Fitted
• ATE — Automatic Test Engineer
• FIOS — Free In/Out Stowed
• DA — Decision Altitude
• THR — Thrust
• SIP — State Implementation Plan
• ALTRV — Altitude Reservation
• CART — Classification And Regression Tree (method In Statistical Analysis)
• CR — Current Rate
• CDM — Collaborative Decision Making
• FST — First
• BT — berth terms
• HO — Hold Over
• ACU — Antenna Control Unit
• PAMPLAY — PAM rePLAY system
• ACI — Airports Council International
• GML — Geography Markup Language
• ARAG — Amsterdam Rotterdam Antwerp Gent Range
• IRS — Inertial Reference System
• OL — Operating Location
• VCCS — Voice Communication and Control System
• COTP — Connection-Oriented Transport Protocol
• ATC-HMI — Air Traffic Control Human Machine Interface
• DCE — Data Communication Equipment
• GOES — Geostationary Operational Environmental Satellite
• OWS — Owners
• ARINC 596 — Mark 2 Airborne SELCAL System
• NWS — National Weather Service (formerly U.S. Weather Bureau)
• WTSPT — Waterspout
• HVAC — Heating, Ventilating, And Air Conditioning
• V — Velocity
• CAB — Civil Aeronautics Board
• GS — Glide Slope
• LGT — Light
• AUSEP — Australian RNAV Separation Standards
• RMP — Radio Management Panel
• SAC — Strategic Air Command
• AMA — Area Minimum Altitude
• ATUTC — Actual Times Used to Count
• NRZ — Non-Return-To-Zero
• ADZD — Advised
• A/P — Autopilot
• ASDE-X — Airport Surface Detection Equipment - X (frequency) band
• CROB — Cargo Remaining on Board
• AMT — Aviation Maintenance Technician
• CD — Candela
• AITS — Automated Inventory Tracking System
• JD TF — Job Description Task Force
• MM — Middle Marker

• CNL — Cancel
• NTZ — No Transgression Zone
• RIB — Routing Information Base
• BOB — Bunker On Board
• LTOG — Long Term Objectives Groups
• ARINC 579 — Airborne VOR Receiver
• DBE — Disadvantaged Business Enterprise
• LIM — Limit
• MSSR — Monopulse Secondary Surveillance Radar
• ARTS — Automated Radar Terminal System
• LRNS — Long-Range Navigation System
• PJMM — Project Management Methodology
• LSA — Lysergic Acid Amide
• 4D FMS — 4D Flight Management System
• CRZ — Cruise
• DEG — Degree
• TDD — Time Division Duplex
• PFN — Pulse-Forming-Network
• FA — Final Approach
• SUA — Special-Use Airspace
• CDTI — Cockpit display of traffic information
• BKN — Broken Sky (METAR Code)
• AOC — Airline Operation Control
• SVID — System V Interface Definition
• LCN — Load Classification Number
• SSR — Software Specification Review
• ALS — approach lighting system
• EXTD — Extend
• VCO — Voltage Controlled Oscillator (Oscillation)
• ANA — All Nippon Airways
• AFCAC — African Civil Aviation Commission
• SUMI — Software Usability Measurement Inventory
• QUAD — Quadrant
• LT — Long Ton
• RPV — Remotely Piloted Vehicle
• HDG — Heading
• RAPPI — Random Access Plan-Position Indicator
• ATSAP — Air Traffic Safety Action Program
• SGS 85 — Sovietic Geodetic System
• ALSF1 — ALS with Sequenced Flashers I
• ATZ — Aerodrome Traffic Zone
• AODR — Authorizing Official Designated Representative
• HAT — Height Above Touchdown
• GUI — Graphic-User Interface
• NOSIG — No Significant Change
• FOQA — Flight Operations Quality Assurance Programs
• ACNZ — Airways Corporation of New Zealand Ltd
• HALO — High Altitude, Low Opening (skydiving term)
• FIR — Flight Information Region
• RTLS — Return To Launch Site

• DEM — Demurrage
• AKARD — Available Knowledge And required system Research and Development
• JMCT — Job Management Consultative Team [job analysis]
• AT — Air Transport
• LORAN — Long-Range Aid to Navigation
• FHA — Functional Hazard Analysis
• ACCID — Notification of an aircraft accident
• FMGC — Flight Management Guidance Computer
• BYD — Beyond
• MTBR — Mean Time Between Replacement
• SSR MODE S — Selective Address SSR
• EFIS — Electronic Flight Information System
• EQPT — Equipment
• AACO — Arab Air Carriers Organization
• ADF — Automatic Direction Finding
• HOV — High Occupancy Vehicle
• RAD — Radio
• UT — Universal Time
• LDI — Landing Direction Indicator
• LATA — Local Access and Transport Area
• ILS — Instituteument Landing System
• CDT — Controlled Departure Time
• MNM — Minimum
• GCU — Generator Control Unit
• ANTHAM — Antwerp-Hamburg Range
• ADVCTN — Advection
• CCIR — International Radio Consultative Committee (French Acronym)
• ARINC 404A — Air Transport Equipment Cases And Racking
• IFR — Instrument Flight Rules
• JUL — July
• LIFR — Low Instrument Flight Rules
• PUP — Principal User Processor (NEXRAD)
• ALSF — Approach Lighting System With Sequenced Flashing Lights
• 1 :M — One-to-Many relationship
• AAA — Amended meteorological message
• IG — Inspector General (HHS)
• NAT NAM — North Atlantic / North America
• FEW — Few
• AFIL — Air Filed Flight Plan
• CATX — Categorical Exclusion
• ELVENT — Electric Ventilation
• FIW — Free in wagon
• MOD — Modified
• MCA — Minimum Crossing Altitude
• ADA — Advisory Area
• JTSO — Joint Technical Standard Order
• DPSK — Differential Phase Shift Keying
• CST — Centistoke
• IF — Intermediate Fix
• TCAS — Traffic Collision Avoidance System

• NSSL — National Severe Storms Laboratory
• CNCL — Cancel
• BSC — Binary Synchronous Communication
• SUP — Supervisor
• TMA — Traffic Management Advisor
• ASI — Air Speed Indicator
• TM — Traffic Management
• ASYNC — Asynchronous
• JAR-OPS — Joint Airworthiness Requirements Operations
• BIM — Building Information Model
• BASE AM — Base Arrival Manager
• FDR — Flight Data Recorder
• NEC — National Electric Code
• ADCOM — Address Commission
• PROC — Procedure
• VASIS — Visual Approach Slope Indicator System
• WINDR — Wind Direction
• PIREP — Pilot (weather) Report
• GRT — Gross Registered Tonnage/Tons
• RSLS — Receiver Side Lobe Suppression
• RWY — Runway
• FSK — Frequency Shift Keying
• AIRAC — Aeronautical Information Regulation and Control
• ARINC 566A — Mark 3 VHF Communications Transceiver
• AAOSA — Always Afloat or Safe Aground
• ARINC 306 — Guidance For Designers Of Aircraft-Electronic Installations
• IFPZ — IFPS Zone
• AAS — advanced automation system (FAA)
• TIAS — True Indicated Airspeed
• MPO — Metropolitan Planning Organization
• DES — Descend
• APA — Allied Pilots Association
• AGHME — Aircraft Geometric Height Measurement Element
• ACH — Air traffic control Flight Plan Change
• HX — No Specific working hours
• STAR — Standard Terminal Arrival Route
• MCP — Mode Control Panel
• NPR — National Performance Review (office)
• SATCAS — Selenia Air Traffic Control Automated System
• CFI — Certified Flight Instructor
• CON — Continuous
• GDP — Ground Delay Program
• VTS — Vessel Traffic Service
• ANC — Air Navigation Commission
• FTI — FAA Telecommunications Infrastructure
• CAS — Calibrated Air Speed
• DIP — Drop and Insert Point
• ABAS — Aircraft-based Augmentation System
• AEFMP — Algeria, Spain, France, Maroc, Portugal Project
• CMIP — Common Management Information Protocol (ATM)

• NL — Engine Revolutions per Minute
• ODS — Operational Data Store (knowledge management)
• CPS — Central Processing System
• ATSU — Air Traffic Services Unit
• MOCA — Minimum Obstruction Clearance Altitude
• RATCC — Radar Air Traffic Control Center
• PRORES — Problem Resolution
• TMU — Traffic Management Unit
• RESMA — Requirements for Emergency and Safety Airborne Equipment
• ARINC 745 — Automatic Dependent Surveillance, Supplement 1
• OP — Operational
• PFI — Private Finance Initiative
• IAO — In And Out
• HG — Mercury (Latin Hydrargyrum)
• TSU — Technical Support Unit
• ALPAP — Air Line Pilots Association of the Philippines
• NP — Propeller speed
• ARINC 574 — Passenger Announcement, Entertainment & Service Multiplex System
• BUECE — Back-up Emergency Communications Equipment
• TDOP — Time Dilution of Precision
• SLEP — Service Life Extension Program
• M — Manual
• ACAMS — Aircraft Condition Analysis and Management System
• EST — Estimated Ship Time
• SSB — Single Side Band
• ATO — Air Traffic Organization
• MTD — Moving Target Detection
• CLC — Course Line Computer
• NCAR — National Center for Atmospheric Research (US)
• FSM — Flight Schedule Monitor
• ACAIS — Air Carrier Activity Information System
• PTUL — Pilots Trade Union of Latvia
• DIA — Denver International Airport
• ADVY — Advisory
• ECMT — European Conference of Ministers of Transport
• FR — From
• DZ — Drizzle
• APRT — Airport
• IU — If Used
• ATMAS — Air Traffic Management Automated System
• PSN — Packet Switched Network
• LAAS — Local Area Augmentation System
• TURB — Turbulence
• JAN — January
• WHO — World Health Organisation
• ACCS — Air Command and Control System
• FPM — Feet Per Minute
• AILS — Automatic Instrument Landing System
• LDG — Landing (aviation)
• AAIB — Air Accident Investigation Branch

• ATS — Air Traffic Services
• NSAP — Network Service Access Point
• ICASM — International Congress of Aviation and Space Medicine
• LVL CHG — Level Change
• AIMS — Airplane Information Management System
• A/S — Alongside
• IMG — Immigration
• DEP — Depart
• AST — FAA Office of Commercial Space Transportation
• AFISO — Aerodrome Flight Information Service Officer
• COV — Cover
• C/N — Carrier-To-Noise Ratio
• BS — Bootstrap Service
• DLP — Data Link Processor
• TOP — Cloud Top
• AS — Altostratus
• TBS — To Be Supplied(by government)
• RSTD — Restricted
• DP — Dewpoint Temperatue
• ARINC 609 — Design Guidance For Aircraft Electrical Power Systems
• MN — Magnetic North
• AAP — Advanced Automation Program
• WGS 84 — World Geodetic System 1984
• SSR — secondary surveillance radar (ICAO/FAA)
• ATIS-B — Automatic Terminal Information Service - Broadcast
• SMGC — Surface Movement Guidance and Control
• JUN — June
• CRM — Cockpit Resource Management
• BBB — Before Breaking Bulk
• CIP — Capital Investment Plan
• UIR — Upper Information Region
• ACSE — Application Control Service Element
• J2EE — Java 2 Enterprise Edition
• PMS — Performance Management System
• WMSCR — Weather Message Switching Center Replacement
• RDSIM — Runway Delay Simulation Model
• FREQ — Frequency
• ASMA — Aerospace Medical Association
• FILO — Free In/Liner Out
• TROP — Tropopause
• MOTNE — Meteorological Operational Telecommunication Network in Europe
• LRU — Line Replacement Unit
• NIMA — National Imagery and Mapping Agency (became National Geospatial-Intelligence Agency|NGA)
• IMDG — International Maritime Dangerous Goods
• ARSR — Air Route Surveillance Radar
• AZM — Azimuth
• CRAM — Conditional Route Availability Message
• MT — Mertic Tonne
• HSI — Horizontal Situation Indicator
• ATCO — Air Taxi Commercial Operator

• TODAH — Take Off distance available, helicopter
• DES — Descent
• ETVCT — En Route Training Voice Communication Tool
• DTM — Digital Terrain Model
• AWOG — All Weather Operations Group
• STA — Scheduled Time of Arrival
• EGPWS — Enhanced Ground-Proximity Warning System
• OCC — Operations control center
• CRDA — Converging Runway Display Aid
• DEM — Digital Elevation Model
• ALT HOLD — Altitude Hold Mode
• PREV — Previous
• DEL — Delete
• ARINC 578 — Airborne ILS Receiver
• AMSS — Aeronautical Mobile Satellite Service
• ARINC 600 — Air Transport Avionics Equipment Interfaces
• DET — Detention
• QAR — Quick Access Recorder
• DBRITE — Digital Bright Radar Indicator Tower Equipment
• ATIS — Automatic Terminal Information Service
• LON — Longitude
• FDPS — Flight Data Processing System
• ATLC — Atlantic
• FAP — Final Approach Point
• FEB — February
• IOT&E — Independent Operational Test and Evaluation
• AFDS — Autopilot Flight Director System
• FCA — Free Carrier Alongside
• ARR — Arrive
• I — Italy
• AOPA — Aircraft Owners and Pilots Association
• ADS — automatic dependent surveillance
• HDD — Head Down Display
• ADZ — Advise
• HAPI — Helicopter Approach Path Indicator
• DL — Downlink Message
• ADREP — Aircraft Accident/Incident Data Reporting System
• DRFT — Drift
• TBN — To Be Notified
• PHINOM — Nominal Bank Angle
• PROF — Profile
• NMC — National Meteorological Center (US)
• LHR — London Heathrow Airport, London, United Kingdom
• DITCO — Defense Information Technology Contracting Office (formerly DECCO)
• HW — High Water
• DETR — Department of the Environment, Transport and the Regions
• RNAV — Random Navigation Area Navigation
• SDR — Service Difficulty Report
• ARPA — Advanced Research Project Agency's
• DEA — Data Exchange Agreement

• SARSAT — Search and Rescue Satellite
• NDI — Nondestructive Inspection
• DIS — Distance
• TMC — Thrust Management Computer
• NR. — Number
• ASN — Advance Shipment Notice
• ACAS — Airborne Collision Avoidance System
• UAT — Universal Access Transceiver
• OCA — Oceanic Control Area
• VASI — Visual Approach Slope Indicator
• CPE — Customer Premise Equipment
• DOC — Document
• XAP — Crossing Alternate Proposal Message
• ELBA — Emergency Locator Beacon Aircraft
• FCC — Flight Control Computer
• FIXM — Flight Information Exchange Model
• LOM — Compass Locator at the Outer Marker
• ATAG — Air Transport Action Group
• XTRK — Cross Track Error
• STAB — Stabilizer
• STWL — Stopway Lights
• UAB — Until Advised By
• AAIB — Air Accidents Investigation Branch
• MNS — Mission Needs Statement
• FDIO — Flight Data Input/Output
• PROM — Programmable Read Only Memory (chip)
• SESAR — Single European Sky ATM Research
• EV — every
• C&A — Certification and Accreditation
• DALR — Digital Audio Legal Recorder
• LASKA — Learning And Skills Acquisition
• IVSR — Interim Voice Switch Replacement Program
• FIOST — Free In/Out and Trimmed
• WFTU — World Federation of Trade Unions
• RTCA — Radio Technical Commission for Aeronautics
• OBO — Ore/Bulk/Oil vessel
• CEC — Commission of the European Communities ;
• AFIZ — Aerodrome Flight information Zone
• SSR MODE S WG — Secondary Surveillance Radar Mode Selective WG
• SNPA — Subnetwork Point of Attachment
• CNDN — Canadian
• CAS — Close Air Support
• RDPS — Radar Data Processing System
• PMS — Pavement Management System
• APM — approach path monitor
• IMPR — Improve
• AFL — Actual Flight Level
• FBO — Fixed-Based Operator
• STOL — Short Takeoff And Landing
• CAEM — Commission for Aeronautical Meteorology (WMO)

• SATSAR — Satellite-aided Search And Rescue
• ACF — Area Control Facility
• PABX — Private Automated Branch EXchange (company Phone System)
• ABM — Abeam
• OAT — Outside Air Temperature
• TDWR — Terminal Doppler Weather Radar
• AARA — Amsterdam-Antwerp-Rotterdam Area
• MOC — Memorandum Of Cooperation
• MUD — Mud Log
• CFWU — Central Flow Weather Unit
• GNSS — Global Navigation Satellite System
• MLDT — Mean Logistic Down Time
• 4D — Four-Dimensional
• FRQ — Frequent
• ACID — Aircraft Identification
• ADS-R — Automatic Dependent Surveillance-Report
• ACR — Atlantic Co-ordinated Route
• ARINC 608 — Standard Modular Avionics Repair And Test System
• ASLAR — Aircraft Surge Launch And Recovery
• PASTUS — Past Us
• QTG — Qualification Test Guide
• AOR-E — Atlantic Ocean Region East
• ASPH — Asphalt
• PFA — Probability of False Alarm
• AEWPD — Adapted EATM Work Programme Document
• DESP — Despatch
• SM — Statute Mile
• AP — Autopilot
• A01 — Automated Observation Without Precipitation Discriminator
• RUC — Rapid Update Cycle
• SASKI — Name of an ATS Route reporting point
• DNSTRM — Downstream
• MTI — Moving Target Indicator
• VCMAX — Active Maximum Control Speed
• ALCE — Airlift Control Element
• FRZN — Frozen
• AMSSP — Aeronautical Mobile Satellite Service Panel
• FIOT — Free In/Out and Trimmed
• IRM — information resource management
• CASA — Civil Aviation Safety Authority
• ARINC 605 — Users Guide For ARINC 616 Avionics Subset Of ATLAS Language
• QAE — Quality Assurance Evaluator
• CAAC — Civil Aviation Administration of China
• AIRS — Advanced Infrared Sounder
• AC — Advisory Circular
• COP — Custom of Port
• FSDO — Flight Standards District Office
• BRL — Building Restriction Line
• 4D-NAV — 4D Navigation
• QDR — Reciprocal Magnetic Bearing

• FTE — Flight Technical Error
• LNAV — Lateral Navigation
• SSAP — Source Service Access Point
• SURVITE — Surveillance Integrated Tested for EATMS
• SOPA — Standard Operating Procedure Amplified
• ECS — Environmental Control System (Subsystem)
• ATCRB — Air Traffic Control Radar Beacon
• CFDS — Centralised Fault Display System
• BSS — Best Signal Selection
• ADLY — Arrival Delay
• FRG — Federal Republic of Germany's
• BSS — Basis
• RAD — Radial
• RAPPI — Radar Access Plan Position
• EFAS — En Route Flight Advisory Service
• IRD — Initial Requirements Document
• AFSFO — AFS Field Office
• FIO — Free In/Out
• SGI — Silicon Graphics Incorporated
• LTP — Landing Threshold Point
• A/I — Accident/Incident
• AUTONAV — Auto-Navigation
• NADA — NADIN Concentrator
• CD-ROM — Compact Disk - Read Only Memory
• PDC — Pre-Departure Clearance
• PVD — Plan View Display
• TWIP — Terminal Weather Information for Pilots
• UTC — Universal Time Coordinate
• ECG — En Route Communications Gateway
• PELA — Proficiency test in English Language for ATCOs
• ARINC 413A — Guidance For Aircraft Power Utilisation And Transient Protection
• RPI — Real Property Inventory
• INIT — Initial
• ASCII — American Standard Code for Interface and Interchange
• AVI — Audio/Video Interleaved Format
• METAR — Meteorological Terminal Aviation Routine Weather Report
• AACC — Airport Associations Co-ordinating Council
• AIC — Aeronautical Information Circular
• ADS-B — Automatic Dependent Surveillance-Broadcast
• DEST — Destination
• OTV — Orbital Transfer Vehicle
• SGL — Signal
• SUBJ — Subject
• DGELG — Dangerous Goods European Advisory Group
• ATCT — Airport Traffic Control Tower
• CWY — Clearway
• GRI — General Rate Increase
• MAUW — Maximum All Up Weight
• FTS — Federal Telecommunications System
• CFIT — Controlled Flight into Terrain

• RMK — Remark
• SAT — Static Air Temperature
• V&V — Validation & Verification
• BRF — Brief
• DSPY — Display
• LCTD — Located
• LO — Low
• CEW — Civil Engineering Works
• ACC-PC — ACC Planning Controller
• CRN — Crane
• BN — Booking Note
• ACL — Altimeter Check Location
• IMAL — Integrity Monitoring Alarm Limit
• ARP — Aerodrome Reference Point
• XMT — Excluding
• AJR — System Operations Services, Air Traffic Organization
• 8.33 CP — 8.33 Contact Person
• ECA — European Cockpit Association
• ASCP — Aviation System Capacity Plan
• AECB — Atomic Energy Control Board
• AOA — Airport Operations Area
• AFIS — Airport Flight Information Service
• AWOS — Automated Weather Observing System
• BASE — Cloud base
• FIT — Free In Trimmed
• FI — Flight Instructor
• OO — Owners Option
• SEA/TAC — Seattle/Tacoma International Airport
• API — FAA Office of International Aviation
• BRA — Bearing, Range and Altitude
• CTAF — Common Traffic Advisory Frequency
• DME/P — Precision Distance Measuring Equipment
• BTN — Between
• COB — Closing of Business
• SSTS — Space Surveillance and Tracking System
• F&E — Facilities and Equipment
• QF — Quality Factor
• IUHTAUTC — If Used, Half Time Actually To Count
• IA — Inspection Authorization
• ALPA — Japan Air Line Pilots Association of Japan
• JURG — Joint Users Requirements Group
• EGT — Exhaust Gas Temperature
• ASR-WSP — Airport Surveillance Radar-Weather System Processor
• ISLS — Interrogation Side Lobe Suppression
• ACDO — Air Carrier District Office
• SVVP — Software Verification and Validation Plan
• BI — Both inclusive
• ADIC — ATS Interfacility Data Communications
• GA — General Average
• GNCN — GENERAL CONDITIONS

• DOTCC — Department of Transportation Computer Center
• AAPA — Association of Asia Pacific Airlines
• PAWES — performance assessment and workload evaluation
• RD — Requirements Document
• CACRC — Commercial Aircraft Composite Repair Committee
• ITWS — Integrated Terminal Weather System
• DAPS — Days all Purposes
• ATFMS — Air Traffic Flow Management System
• DESC — Descending
• ARINC 415 — Operation/Technical Guidelines On Failure Warning and Functional Test
• SVCBL — Serviceable
• TRU — True
• TCP / IP — Transmission Control Protocol / Internet Protocol
• OPT — Optimum
• MAR — March
• FARAWAY — Fusion of Radar and ADS data through two WAY data link
• VNO — Maximum structural cruising speed
• CDA — Continuous Descent Approach
• ABOVE DECK — On the deck
• FACC — Feature and Attribute Coding Catalogue
• ARINC 746 — Cabin Communications System, Supplement
• DF — Direction Finder (Finding)
• AEV — Annual Equivalent Value
• RBP — Radar Bypass Processor
• OFZ — Obstacle Free Zone
• AACI — Airports Association Council International
• FEU — Forty-Foot Equivalent Unit
• IMPACT — Information Market Policy Actions
• ARF — Airport Reservation Function
• RMI — Radio Magnetic Indicator
• AMVER — Automated Mutual-Assistance Vessel Rescue system
• ESDI — Enhanced Small-Device Interface
• AATF — Airworthiness Assurance Task Force
• ATAF — Allied Tactical Air Force (NATO)
• RCH — Reach
• QDM — Magnetic Heading
• COT — At the Coast
• ARMATS — State Closed Joint-Stock Company of Armenian Air Traffic Services
• CRAF — Civil Reserve Air Fleet
• ASDA — Accelerate-Stop Distance Available
• PMS — Program Management System
• PRN — Pseudo-Random Noise
• LCL — Less Container Loaded
• AIMS — Aircraft Integrated Monitoring System
• MDD — Meteorological Data Distribution
• ARINC 414 — General Guidance For Equipment And Installation Engineers
• AAME — Association of Aviation Medical Examiners
• DF — Direction Finding or Finder
• DTS — Dedicated Transmission Service
• RSR — en-Route Surveillance Radar

• DGAC — Direction Générale de l’Aviation Civile
• AMS — Acquisition Management System
• CDV — Compressed Digital Video
• IFPZ — Integrated Initial Flight Plan Processing System Zone
• ATTIS — AT&T Information Systems
• PBD — Place Bearing/Distance
• EB — Eastbound
• AIR — Aircraft Certification Service
• YOYO — Only Y Available
• ELD — Electrical Load Database
• FDP — Flight Data Processing
• AFIS — Aerodrome Flight Information Service
• FOD — Foreign Object Debris
• CNVTV — Convective
• WAAS — Wide Area Augmentation System
• FSP — Flight Strip Printer
• OMI — Organisation Maritime Internationale (French: International Maritime Organization; UN)
• NSSFC — National Severe Storms Forecast Center
• ARFF — Aircraft Rescue and Fire Fighting
• CPF — Central Processing Facility
• TSNT — Transient
• ANCA — Airport Noise and Capacity Act
• KCAS — Knots Calibrated Airspeed
• DA — Descent Advisor
• DVD — Dual View Display
• TVE — Total Vertical Error
• ASPW — Any Safe Port in the World
• JTIDS — Joint Tactical Information Distribution System (djay-tidz)
• PMA — Parts Manufacturer Approval
• VRB — Variable
• WRNG — Warning
• ACCC — Australian Competition Consumer Commission
• ALTM — Altimeter
• DMU — Data Management Unit
• PDR — Preferential Departure Route
• ADES — Aerodrome of Destination
• CRT — Choice Reaction Time
• ARINC 594 — Ground Proximity Warning System
• 3D — Palair Macedonian
• NRH — No Reply Heard
• AOV — Air Traffic Safety Oversight Service
• GEO — Geographic
• RP — Restoration Priority
• NSW — No Significant Weather
• GLOSS — Global Sea Level Observing System (of IOC)
• AVHRR — Advanced Very High-Resolution Radiometer
• AO — Aircraft Operator
• AWOP — All Weather Operations Panel (ICAO)
• MNOP — Maximum Normal Operating Pressure
• RTO — Rejected Take-Off

• LRCO — Limited Remote Communications Outlet
• CSMC — Cyber Security Management Center
• SES — Single European Sky
• ADSP — Automatic Dependent Surveillance Panel
• ATCO — Air Traffic Controllers Organization
• SCAT-1 APPROACH — Special Category 1 Approach
• DMN — Data Multiplexing Network
• BRM — Barometer
• EFB — Electronic Flight Bag
• ALF — Aloft
• LB — Local Battery
• ECPIC — Electronic Capital Planning Investment Control
• ICAO — International Civil Aviation Organisation
• SITA — Société Internationale Télécommunique Aéronautique
• ARINC 528 — Airborne Tape Recorder
• A/H — Altitude/Height
• CSIS — Centralized Storm Information System
• ERR — Error message
• GEADGE — German Air Defense Ground Environment
• LORAN — Long Range Navigational System
• MEA — Minimum Enroute Altitude
• AAD — Assigned Altitude Deviation
• FWAD — Fresh Water Arrival Draft
• ADT — Air Data Tester
• REIL — Runway End Identification Light
• IVSI — Instantaneous Vertical Speed Indicator
• A/N — Arrival Notice
• ARINC 742 — Design Guidance For Windshear Warning and Guidance Equipment
• CBFT — Cubic Feet
• ORCAM — Originating Region Code Assignment Method
• XNG — Crossing
• ACAA — Air Carrier Association of America
• ARAC — Aviation Rulemaking Advisory Committee (FAA)
• ACEP — Airport Capacity Enhancement Plan
• FLM — Front Line Manager
• EHSI — Electronic Horizontal Situation Indicator
• ADA — Air Defense Area
• RD-CHANNEL — Random Data Channel
• CNTRLN — Centerline
• CALS — Computer-aided Acquisition and Logistic Support
• IFRB — International Frequency Registration Board of the International Telecommunication Union
• FG — Fog Gun
• HURCN — Hurricane
• ONC — Operational Navigation Chart
• DAR — Designated Agency Representative
• ITIRS — International Terrestrial Reference System
• MHA — Minimum Holding Altitude
• A/A — Air/Air
• QP — Quality Plan
• SMR — Surface Movement Radar

• STANINE — Standard Nine Score
• PROB — probability
• IDENT — Identification
• TOD — Top of Descent
• M. — meter
• ANP — Air Navigation Plan
• ACSA — Allied Communications Security Agency
• NAWAU — National Aviation Weather Advisory Unit
• EMAS — Engineered Materials Arresting System
• AT&T ASDC — At&t Agency Service Delivery Center
• GNDCK — Ground Check
• SDP — Service Delivery Point
• UHF — Ultrahigh Frequency
• SMT — station management (protocol)
• LOF — Lloyds Open Form
• GFP — Government Furnished Property
• ODIF — Open Document Interchange Format
• OVC — Overcast (METAR Code)
• DPTH — Depth
• ABDIS — Automated Data Interchange System Service
• CRT — Cargo Retention Clauses
• LS — Lumpsum Freight
• KT — Knots
• CFP — Cold Front Passage
• BAA — British Airport Authority
• B/C — Benefit/Cost
• CWBS — Contract Work Breakdown Structure
• FIDS — Flight Information Display System
• ARINC 602 — Test Equipment Guidance
• PSS — Packet Switched Service
• ABOARD — On or within the ship
• TO EPR — Takeoff Engine Pressure Ratio
• AOC — Aerodrome Obstacle Chart
• DRK — Derrick
• ARINC 577 — Audible Warning System
• FPAP — Flight Path Alignment Point
• QBI — Compulsory IFR flight
• IA — International Alphabet
• ALPA-FYROM — Air Line Pilots Association of The Former Yugoslav Republic of Macedonia
• TN — True North
• COE — Center of Excellence
• AIFSS — Automated International Flight Service Station
• DPNG — Deepening
• FIX — position in space usually on aircraft�s flight plan
• TLOF — Touchdown and Lift-off Area
• TIS-B — Traffic Information Service Broadcast
• CAVOK — Clouds and Visibility OK
• MMR — Multi-Mode Receiver
• RPP — Radiation Protection Program
• AFFREIGHTMENT — The hiring of a ship in whole or part

• AFMS — Automatic Flight Management System
• TLS — Target Level of Safety
• FSF IAS — Flight Safety Foundation International Aviation Safety
• FDE-ICD — Flight Data Entry - Interface Control Document
• M/V — Merchant Vessel
• F18 — Field 18 of Flight Plan
• NAVSAT — Navigation Satellite
• CASOR — Civil Area Services Operations Room
• TBC — The Boeing Company
• HELIOPS — Helicopter Operations Panel
• NOPT — No Procedure Turn Required
• APPR — Approach
• LMM — Compass locator at the middle marker
• WMO — World Meteorological Organisation
• HDWTS — Half Despatch Working Time Saved
• ESEWD — East-Southeastward
• MDA/H — Minimum Descent Altitude/Height
• EFIS — Electronic Flight Instrument System
• AAC — Airline Administrative Communication
• EFSTS — Electronic Flight Strip Transfer System
• FHEX — Fridays/Holidays Excluded
• OPX — Off-Premises Exchange
• A — Aeroplane
• VNAV — Vertical Navigation
• LC — Local Control
• CBM — Cubic Metres
• HI FI SIM — High-Fidelity Simulator
• EAD — Earliest Arrival Date
• MMI — Marshall Management Instruction
• GPWS — Ground Proximity Warning System
• GLD — Glider
• WND — Wind
• DNSLP — Downslope
• AEP — FAA Office of Aviation Policy Planning and Environment
• MTF — Modulation transfer function.
• ADLP — Aircraft Data Link Processor
• ATOS — Air Transportation Oversight System
• XPNDR — Transponder
• FAF — Final Approach Fixes
• LAYCAN — Layday Cancelling Date
• AIG — Airbus Industries Group
• BM — Beam, Maximum
• ARINC 576 — Mark 4 Subsonic Air Data System
• AMASS — Airport Movement Area Safety System
• NBCAP — National Beacon Code Allocation Plan
• HDG SEL — Heading Select
• AOC — Aircraft Operations Centre
• AASR — Aging Aircraft Safety Rule
• FMGS — Flight Management Guidance System
• APA(CV) — Air Line Pilots Association (Cape Verde)

• FPO — Flight Procedures Office
• ODAL — Omnidirectional Approach Lighting System
• RDVS — Rapid Deployment Voice Switch
• EIU — Even If Used
• TWY — Taxiway
• GENOT — General Notice
• FSCAP — Flight Safety Critical Aircraft Parts
• FAC — Fast as can
• NGA — National Geospatial-Intelligence Agency (formerly National Imagery and Mapping Agency; US government)
• AOCC — Atlantic Operations Control Center
• CG — centre of gravity
• RAES — Royal Aeronautical Society
• AM — AeroMexico
• RTQC — Real Time Quality Control
• VCSS — Voice Communications Switching System
• PT — Product Team
• SLOP — Strategic Lateral Offset Procedure
• ACLT — Actual Landing Time Calculated
• DEGS — Degrees
• MALS — Medium-Intensity Approach Lighting System
• ATDS — Airborne Tactical Data Systems (USN)
• FAL — Final Assembly Line
• NMB — National Mediation Board
• FRM — Financial Resources Management Core Team
• ASI — Aviation Safety Inspector
• ASQP — Airline Service Quality Performance
• AFN — air traffic services facilities notification
• SDIS — Switched Digital Integrated Service
• ATCCC — Air Traffic Control Command Center
• C-ATSU — Controlling ATS Unit
• DISCH — Discharge
• THDG — True Heading
• DR — Drifting (METAR descriptor)
• B&H — Bosnia & Herzegovina
• HID/NAS/LAN — Host Interface Device/National Airspace System/Local Area Network
• VSP — Vertical Speed
• NORAC — No Radio Contact
• C-ATSU — Current Air Traffic Services Unit
• MALPA — Mauritius Air Line Pilots Association
• BTH (R) — Beyond the Horizon (Radar)
• CWS — Control Wheel Steering
• CLKWS — Clockwise
• IFPS — Integrated Initial Flight Plan Processing System
• PALPA — Pakistan Air Line Pilots' Association
• FPLMTS — Future Public Land Mobile Telecommunications System
• BANS — BRITE Alphanumeric System
• CASS — Continuing Analysis and Surveillance System
• AEX — Automated Execution
• MTOW — Maximum Take-off Weight
• ATCO — Air Traffic Control Officer

• NP — Network Protocol
• FOR — Free On Rail
• ADSEL — Address Selective SSR System
• OLDI — On-Line Data Interchange
• A/L — Anti-ice
• SAS — Scandinavian Airlines System
• CPA — Chairman's program assessment; closest point of approach
• FE — Flight Examiner
• AAH — Autonomous Aircraft Hybrid
• AMIS — Aircraft Management Information System
• RCLL — Runway Centre Line Lights
• IFE — In-Flight Emergency
• VCMIN — Active Minimum Control Speed
• EARS — En Route Analysis and Reporting System
• APGSL — Air Line Pilots Guild of Sri Lanka
• AVGAS — Aviation Gasoline
• AMOS — Automated Meteorological Observation Station
• HEL — Helicopter
• AOR-W — Atlantic Ocean Region West
• ASE — Altimetry System Error
• ASA — Airservices Australia
• AVSI — Aerospace Vehicle Systems Institute
• NCN — Non-compliance Notification
• PIC — Pilot In Command
• PRM — Precision Runway Monitor
• ACM — Acceptable Means of Compliance
• APMS — Automated Performance Measurement System
• VTOL — Vertical Take-Off & Landing
• ES&H — Environmental Safety And Health
• EATCHIP — European Air Traffic Control Harmonisation and Integration Programme
• C/A CODE — Course / Acquisition Code
• A/G — Air-Ground
• ATSS — Airway Transportation Systems Specialist
• CWP — Controller Working Position
• ERIP — EAD Remote Interface Package
• PATCG — PHARE Advanced Tools Co-ordination Group
• PHPD — Per Hatch Per Day
• DMSH — Diminish
• QFU — Magnetic orientation or runway in use
• FCL — Flight Crew Licensing
• FPCP — Flight Path Control Point
• FPS — Flight Progress Strip
• A/G — Air/Ground
• BRITE — Bright Radar Indicator Tower Equipment
• MTCD — Medium Term Conflict Detection
• NCB — National Cargo Bureau
• HP — Holding Pattern
• ACRP — Airport Cooperative Research Program
• SVP — Supervisor
• JST — Joy Stick

• BCC — Battery Charge Controller
• ADDA — Administrative Data
• MAT — Maintenance Access Terminal
• IFSS — International Flight Service Station
• ATLAS — Air Traffic Land and Air Study
• CAR — Civil Aviation Regulations
• ITU WARC-95 — International Telecommunication Union World Radio Conference
• 5-ST-RSG — 5-States Route Structure Group
• ATFMU — Air Traffic Flow Management Unit
• KLM — KLM Royal Dutch Airlines
• DARC — Direct Access Radar Channel
• DYSIM — Dynamic Simulator
• TRK — Track
• RCLS — Runway Centerline Lighting System
• APC — Aeronautical Passenger Communication
• BASE AMD — Base Arrival Manager Display
• CYTA — Cyprus Telecommunications Authority
• SWAP — Severe Weather Avoidance Program
• COMCO — Command Communications Outlet
• AAC — Mike Monroney Aeronautical Center
• LOE — Line Oriented Evaluation
• E M — signalling
• EXP — Expect
• ERIDS — En Route Information Display System
• ISASI — International Society of Air Safety Investigators
• DOF — Date of Flight
• HST — Hypersonic Transport
• ATCSCC — Air Traffic Control Systems Command Center
• ALRS — Alerting Service
• CIE — International Commission on Illumination
• CUF — Cumuliform
• DOM — Domestic
• AFO — Airport Field Office
• MTW — Mountain Waves
• VCY — Vicinity
• ECAC AREA — European Civil Aviation Conference Area
• AERA — Automated En Route Air
• LYR — Layer
• ETG — Enhanced Target Generator
• ARINC 741P1 — Aviation Satellite Communication System:Part I- Aircraft Installation Provisions
• SHAPE — Supreme Headquarters Allied Powers Europe (NATO)
• AJW — Technical Operation Services, Air Traffic Organization
• ASC — AUTODIN Switching Center
• COBLDN — Closing of Business London
• AGROUND — Touching or fast to the bottom
• ERAM — En Route Automation Modernization
• CWAR — Continuous Wave Acquisition Radar
• AAATS — Australian Advanced Air Traffic Services
• MIRACULIX — Multi Interface Radarformat Calculator and
• EIRP — EffectiveIsotropic Radiated Power

• FPA — Flight Path Angle
• GN — Grain
• WSO — Weather Service Office
• AMSS — Aeronautical Mobile Satellite System
• HED — Heading
• SSFDR — Solid-State Flight Data Recorder
• ARN-2 (TABLE) — Radio Navigation Aids Associated with the Basic ATS Route Network Terminal Area and Instrument Approach Procedures
• LRNAV — Long Range Navigation
• HHMMSS — hour-hour / minute-minute / second-second
• UAL — United Airlines
• AV — Avianca (Aerovias del Continente Americano) Colombian Airline
• FBO — fixed base operator
• ATCRU — Air Traffic Control Radar Unit
• WBC — Weight and Balance Computer
• QCM — Quality Control Manager
• ATOMS — Air Traffic Operations Management System
• ESRI — Environmental Systems Research Institute (developer of geographic information systems (GIS) software, Redlands, California)
• INBD — Inbound
• ATILO — Administrative Tribunal of the International Labour Organisation
• RA — Resolution Advisory
• DADC — Digital Air Data Computer
• AALPBH — Association of Airline Pilots in Bosnia & Herzegovina
• ADIS — Automatic dependent surveillance and Data Link Interim System
• OSA — Operational Safety Assessment
• NYPE — New York Produce Exchange
• PIREP — Pilot Report
• MODE C — Altitude Reporting Mode of Secondary Radar
• IUAI — International Union of Aviation Insurers
• CP — charter-party
• DG — Directional Gyroscope
• DABS — Discrete Address Beacon System
• A&F — IFALPA Administration & Finance Committee
• DFS — Detailed Functional Specification
• TARE — Telegraphic Automatic Relay Equipment
• FPA — Focal Plane Array
• A/T — autothrottle
• IGFET — Insulated Gate Field Effect Transistor
• D — Derated
• FPB — Flight Progress Board
• ADAP — Airport Development Aid Program
• VPATH — Vertical Path
• VRS — Voice Response System
• ATK — Air Traffic Controller Acknowledgement
• MCK — Maintenance Check
• AFT — At or towards the stern or rear of a ship
• ASP — Arrival Sequencing Program
• SRTM — Shuttle Radar Topography Mission
• SATCOM — Satellite Communication
• DATAC — Digital Autonomous Terminal Access Communication
• BTL — Between layers

• ATN — Aeronautical Telecommunications Network
• ASPENN RPG — Aeronautical Fixed Service Planning Study EUR/NAM/NAT Regional Planning Group
• IOSA — Iata Operational Safety Audit
• AFRAA — African Airlines Association
• EEC — Electronic Engine Control
• ADM — Aeronautical Decision Making
• 4-MAST — 4-MAST group
• GMU — GPS (Height) Monitoring Unit
• AACC — Airport Associations Co-coordinating Council
• AOPG — Aerodrome Operations Planning Group
• ARINC 585 — Electronic Chronometer System
• SRMDM — Safety Risk Management Memo
• DNG — Danger
• NEXRAD — Next Generation Weather Radar
• CENRAP — Center Radar ARTS Presentation
• CTSKLS — Catskills
• 5-STRSSG — 5-States Route Structure Steering Group
• VOM — Volt-ohm-milliammeter
• FHINC — Fridays/Holidays Included
• NTN — Network Terminal Number
• THR HOLD — Throttle Hold
• AASA — Air Lines Association of Southern Africa
• SA — System Administrator
• AWO — All Weather Operations
• FISO — Flight Information Service Officer
• FLIDRAS — Flight Data Replay and Analysis System
• SHL — Saville and Holdsworth Ltd
• OAG — Official Airline Guide
• APPA — Asociacion Profesional de Pilotos Aviadores de Costa Rica
• FMF — Facility Master File
• EU-FCL — EASA Flight Crew Licensing
• ARO — Airport Reservation Office
• CFDIU — Central Fault Display Interface Unit
• RTS — Return To Service
• ST&E — Security Test and Evaluations
• AAC — Aeronautical Administration Communication
• EFC — Expected Further Clearance
• BUNKERS — Name given for vessels Fuel and Diesel Oil supplies
• ESCAT — Emergency Security Control of Air Traffic
• AFI — Africa-Indian Ocean Region
• CASTLE — Consolidated Automated System for Time and Labor Entry
• CFL — Cleared Flight Level
• IAT — Investment Analysis Team
• AND — Associate Administrator for NAS Development
• GADO — General Aviation District Office
• ALO — Air Force Liaison Officer
• FDE — Flight Data Entry
• CMPL — complete
• FDESP — Free Despatch
• FSYS — Flight Service Station Equipment Systems

• CMIS — Common Management Information System
• CAMI — Civil Aerospace Medical Institute
• FIFO — Flight Inspection Field Office(s)
• ANGB — Air National Guard Base
• ADIZ — Air Defence Identification Zone
• AHR — FAA Office of Human Resources
• TAU — Range / Range rate
• FSDPS — Flight Service Data Processing System
• ALPA-SA — Air Line Pilots Association - South Africa
• ARP — Aerospace Recommended Practice
• MODIS — moderate-resolution imaging spectrometer (NASA/GSFC)
• AAFCE — Allied Air Forces Central Europe
• RTSE — Reliable Transfer Service Element
• PCB&T — Personnel Compensation Benefits and Travel
• AATT — Advanced Aviation Transportation Technology
• LMM — Locator middle marker
• APN — apron
• CPCS — Consolidated Production Control System
• OPLAN — Operational Plan
• NLA — New Large Aircraft
• ARPL — ADEXP Format Repetitive Flight Plans Message
• AIT — Automated Information Transfer
• NPDU — Network Protocol Data Unit
• BROKERAGE — Percentage of freight payable to broker
• CNS/ATM-1 — Communication, Navigation and Surveillance / Air Traffic Management Package 1
• LECT — Lecture
• ARINC 751 — Gate-Aircraft Terminal Environment Link - Aircraft Side
• ALPA-K — Air Line Pilots Association of Korea
• AIDS TO NAVIGATION — Artificial objects to supplement natural landmarks indicating safe and unsafe waters
• AJO — Chief Operating Officer, Air Traffic Organization
• ACS — airspace control system
• IW — Inside Wiring
• CIT — Compressor Inlet Temperature
• SASS-C — Surveillance Analysis Support System - Centre
• SFPL — System Flight Plan Processing
• RLSD — Released
• FPFS — First Planned First Served
• CAST — Certification Authority Software Team
• ARINC 541 — Airborne Magnetic Flight Data Recorder
• AP — Airport Plaza
• AORTF — ATM Added Functionality Operational Requirements Task Force
• ISPS — International Ships and Port Security system
• AA — AMERICAN AIRLINE
• TDO — Tornado
• AFTN — Automated Fixed Telecommunications Network
• LCG — Load Classification Group
• HF — Human Factors
• FLAS — Flight Level Allocation System
• BORG — Basic Operational Requirements Group
• MORS — Mandatory Occurrence Reporting Scheme

• FLOWSIM — Traffic Flow Planning Simulation
• FSF — Flight Safety Foundation
• CNS — Communication, Navigation and Surveillance Systems, Inc.
• ROC — Regional Operations Center (NATO)
• AEREA — Association of European Research Establishments in Aeronautics
• AAA — Airport Airspace Analysis
• LCN — Local Communications Network
• EEC — Eurocontrol Experimental Centre
• HAA — Height Above Airport
• P&H — Press and Hold
• FFAC — From Facility
• EARTS — En Route Automated Radar Tracking System
• RID — review item description
• DCS — Double Channel Simplex
• FPPU — Flight Planning and Flight Progress Updating
• CAIRS — Cable Assignment Information Retrieval System
• VM(LO) — Minimum Maneuver Speed
• RX — Receiver
• CUR — Controller
• FME — Force Majeure Excepted
• ARINC 592 — Airborne Passenger Tape Record
• DITS — Digital Information Transfer System
• DO — Diesel Oil
• COBALT — Common Objective Alignment Team
• MET — Meteorological
• AIM — Aeronautical Information Management
• AUX — Auxilliary
• ATCI — Airport ATC and Information systems
• RAPNET — Regional ATC Packet switched Network
• 8.33 PMC — 8.33 Programme Management Cell
• OIG — Office of the Inspector General
• AJT — Terminal Service, Air Traffic Organization
• ARINC 307 — Aircraft Integrated Data System Wire Bundle Provisions
• 4DTN — 4D Trajectory Negotiation
• JAI — Joint Acceptance Inspection
• FIS-B — Flight Information Services - Broadcast
• ISL — Intermediate Supplementary Flight Level
• ASECNA — Agence pour la Securité de la Navigation en Afrique et à Madagascar
• ARINC 748 — Communications Management Unit
• CFD — Change to Flight Data Message
• CAAF — Civil Aviation Authority of Fiji
• ABET — Airspace Behavioural Engineering Technology
• DRCP — Data Reduction Computer Program
• DDP — Distributed Data Processing
• LVB — Luchtverkeersbeveiliging
• ADTN — Administrative Data Transmission Network
• MAPT — Missed Approach Point
• CUPS — Consolidated Uniform Payroll System
• ANMS — Automated Network Monitoring System
• ALLA — Allied Long-Lines Agency

• AFD — Airport Facility Directory
• FSAS — Flight Service Automation System
• CIDIN — Common ICAO Data Interchange Network
• FWDD — Fresh Water Departure Draft
• FCU — Flight Control Unit
• ATA — Airport Traffic Area
• ARINC 7411P2 — Aviation Satellite Communication System: Part 2 - Satellite Design
• SS — Sunset
• ASTA — Airport Surface Traffic Automation
• CAEG — Computer-aided Engineering Graphics
• FAX — Facsimile Equipment
• ATAS — Airspace and Traffic Advisory Service
• CATCO — Chief ATC Operations
• AIREP — Plain language form of Air Report
• COCESNA — Central American Corporation for Air Navigation Services
• DUATS — Direct User Access Terminal System
• OPADD — Operating Procedures for AIS Dynamic Data
• INSTRAT — Institutional Strategy for Air Traffic Management
• AOI — Area of Operational Interest; TERPS Office (USAF)
• ATCEUC — Air Traffic Controllers European Unions Coordination
• IAS — Indicated Air Speed
• SEMP — Software Engineering Management Plan
• AACE — Airfield Approach Control Element
• FRNG — Firing
• FFM — Free Flight Mode
• PD — Profile Descent
• AJS — Safety Services, Air Traffic Organization
• GRD — Geared
• ATCU — Air Traffic Control Unit
• ALPA-A — Air Line Pilots Association of Armenia
• OTR — Oceanic Transition Route
• FQIS — Fuel Quantity Indicating System
• ADS-P — Automatic Dependent Surveillance-Panel
• ASAS — Aviation Safety Analysis System
• ESERN — East-Southeastern
• ATCC — Air Traffic Control Centre
• P — Procedure-Required Tuned NAVAID
• DFDR — Digital Flight Data Recorder
• AEA — Eastern Region
• JAL — Japan Air Lines
• GEORGIAN ALPA — Georgian Air Line Pilots Association
• AJC — Communications Services, Air Traffic Organization
• MSAW — Minimum Safe Altitude Warning
• AEE — FAA Office of Environment and Energy
• PFL — Planned Flight Level
• BASOP — Military Base Operations
• TOGA — Takeoff/Go-Around
• IACS — INTERGRAPH Aeronautical Charting System
• AI — Application Interface
• OGE — Operational Ground Equipment

• TODA — Take-Off Distance Available
• ALOFT — Above the deck of the ship
• FIN — Finnair Oyj, Finland
• AFM — Affirmative Fair Housing Marketing
• EATCHIP OCD — Operational Concept Document
• FDSU — Flight Data Storage Unit
• HSPD — Homeland Security Presidential Directive
• MVA — Minimum Vectoring Altitude
• T/O — Takeoff
• AAMS — Aircraft Arrival Management System
• AFTIL — Airway Facilities Tower Integration Laboratory
• MTRAQ — Multi track quality
• RLD — Rijks Luchtvaart Dienst
• AFCNF — Air Force Central NOTAM Facility
• AJA — Acquisition & Business Services, Air Traffic Organization
• ARINC 551 — Airborne Glide Slope Receiver - Mark 2
• CAMA — Civil Aviation Medical Association
• IM — Inner Marker
• OAMP — Off-line Aircraft Management Program
• HS-DTS — High Speed Data Transmission System
• DFGS/C — Digital Flight Guidance System/Computer
• EUROCONTROL — European Organisation for the Safety of Air Navigation
• MAA — maximum authorized IFR altitude
• ABAFT — Toward the rear of the ship
• WSW — West-South-West
• REACT — Rain Echo Attenuation Compensation Technique
• STAC — Second Time Around Clutter
• COCESNA — Central American Corporation For Air Navigation Service
• ATM — Air Transportation Management
• NAVAID — Navigational Aid
• G/A — ground to air
• SSW — South-South-West
• ADS-C — Automatic Data Surveillance Contract
• ANSEP — Air Navigation Services Economics Panel
• ALD — Airlift Division
• RFL — Requested Flight Level
• VS — Design Speed for Maximum Gust Intensity
• OGM — Objectives > Goals > Mission
• AS — Airspeed
• FPPS — Federal Personnel Payroll System
• AFIS — Automated Flight Inspection System
• OMT — Onboard Maintenance Terminal
• EVAS — Enhanced Vortex Advisory System
• IAG — International Association of Geodesy (IUGG)
• ARINC 752 — TFTS Airborne Radio Sub-System
• FTC — Fast-Time Constant
• CEATS — Central European Air Traffic Services
• AFAS — Aircraft in the Future ATM System
• ASPM — Aviation System Performance Metrics
• SSM — Sign Status Matrix

• TWT — Travelling Wave Tube
• ADMA — Aviation Distributors and Manufactureres Association
• AAL — Alaska Region
• DDA — Dedicated Digital Access
• IANS — Institute of Air Navigation Services
• CARATS — Collaborative Actions for Renovation of Air Traffic Systems
• ALPA-S — Air Line Pilots Association - Singapore
• ADL — Aeronautical Data-Link
• DACS — Digital Aeronautical Chart Supplement
• FPZ — Flight Path Zone
• MRVA — Minimum Radar Vector Altitude
• FP — Free Pratique
• SUP/ACC — Supervisor Area Control Centre
• PTH — Path
• HCP — Hard Copy Printer
• ELNGT — Elongate
• CTO — Calculated Time Over
• HFDL — High Frequency Data Link
• AITSC — Administrative IT Steering Committee
• ALR — IFALPA's Airport Liaison Representative Program
• GENOFIC — General North Sea Flight Information Centre
• LCGS — Low Cost Ground Surveillance Radar
• AFZ — Resource Management
• ALRS — Approach Lighting System
• MTCDR — Medium-Term Conflict Detection and Resolution
• ARINC 406A — Airborne Electronic Equipment
• ALPA — Airlines Pilots Association
• CES — Central and Eastern European States
• ARSC — Air Rescue Sub Centre
• KB — Kilo Bytes (1,000 Bytes)
• APDSG — Airspace Planning & Development Sub-Group
• AP — Airport Protection
• U/L — Upper / Lower
• POCC — Pacific Operations Control Center
• VY — Speed for best rate of climb
• AICS — Aircraft Inventory and Charter System
• FISA — Automated flight Information Service
• MEB — Main Earthing Bar
• GSB — Good Safe Berth
• MTOM — Maximum Take-Off Mass
• UAP — User Application Profile
• OBST — Obstacle
• AQS — FAA Office of Quality, Integration and Executive Services
• EFC — Expect Further Clearance
• BIMCO — The Baltic and International Maritime Council
• SPAS — Safety Performance Analysis System
• EOF — Emergency Operating Facility
• EL — Electro-Luminescent
• LVE — Leave
• AOC — Airline Operational Control

• ACI-NA — Airports Council International-North America
• FDC — Flight Data Company
• VFE — Flaps Extended Placard Speed
• PANS-OPS — Procedures for Air Navigational Services - Aircraft Operations
• GDLP — Ground Data Link Processor
• AFAST — Active Final Approach Spacing Tool
• IFL — Intermediate Flight Level
• OFT — Outer Fix Time
• DRDF — Digital Readout Direction Finder
• ARN-1 (TABLE) — Basic ATS Route Network in the Lower and Upper Airspace
• AFMT — Airway Facilities Management Team
• AEGIS — Airborne Early Warning Ground Environment Integrated Segment
• ERSS — Eurocontrol Radar Surveillance Standard
• EX GDR — ex German Democratic Republic
• HHMM — Hours and minutes
• ARNG — Arrange
• RTCM SC — Radio Technical Commission for Maritime Services Special Committee
• ARINC 595 — Barometric Altitude Rate Computer
• AUW — All Up Weight
• MVE — Move
• FIS-B — Flight Information Service - Broadcast
• FDMAS — Flight Data Management Automated System
• GEOREF — Geographical reference
• APATSI — Airport / Air Traffic Systems Interface
• CDFA — Constant Descent Final Approach
• CZM — Conventional Zero Meridian
• ALPA-SL — Air Line Pilots Association of Slovenia
• ASRS — Aviation Safety Reporting System
• SNIR — Signal-to-noise ratio
• ARINC 741P4 — Aviation Satellite Communications System:Part 4 - Specification and Description Language
• QTE — True Bearing
• OMEGA — Very Low Radio Navigation System
• EHEST — European Helicopter Safety Team
• DFRT — Deadfreight
• POC — Point-of-Contact
• IACA — International Air Carrier Association
• CLG — Calling Line
• OSH — Open Shelter Deck
• CGAS — Coast Guard Air Station
• AWY — Airway
• ARR SP — Arrival Sequence Planner
• WSFO — Weather Service Forecast Office
• CANSO — Civil Air Navigation Services Organisation
• ELS — Emergency Landing Strip
• NADIN — National Airspace Data Interchange Network
• ADEP — Aerodrome of Departure
• VBX — Visual Basic Extensions
• GICB — Ground Initiated Comm B Protocol
• ATTCS — Automatic Takeoff Thrust Control Systems
• ARO — Air Traffic Service Reporting Office

• ALRT — Alert
• ALCM — Air Launched Cruise Missile
• GES — Ground Earth Station
• PSDN — Public Switched Data Network
• MOD — Memorandum of Decision
• SO — Southern Airways
• AOIS — Aeronautical Operational Information System
• MUT — Mean Up Time
• ADVO — Administrative Voice
• VC — Design Cruising Speed
• V1 — Take-Off Decision Speed
• PPR — Prior Permission Required
• DOD — Department of Defence
• ACFS — Advanced Concepts Flight Simulator
• CNS/ATM — Communication, Navigation and Surveillance / Air Traffic Management
• ADSIM — Airfield Delay Simulation Model
• C/S — Call Sign
• CDR — Coded Departure Routes
• FSD TF — Functional Specification Development Task Force
• AWX — All Weather Fighter
• AJF — Finance Services, Air Traffic Organization
• NAV-1 — Radar Data System
• ACPO — Aircraft Position Operator
• AFM — Aeroplane Flight Manual
• AVON — AUTOVON Service
• IAF — Initial Approach Fixes
• ARTCC — Air Route Traffic Control Centre
• 5-SRSWG — 5-States Route Structure Working Group
• RMMC — Remote Maintenance Monitoring and Control
• FZL — Freezing Level
• IAFP — Individual ATC Flight Plan Proposal
• RBDPE — Radar Beacon Data Processing Equipment
• DFW — Dallas Fort Worth International Airport
• LYCN — Layday Cancelling Date
• CL — Cost Index
• RCDSS — Radar Control and Display Subsystem
• IFEA — In-Flight Emergency Assistance
• CATCAS — Copenhagen Air Traffic Control Automated System
• ALPA-E — Air Line Pilots Association of Ethiopia
• SFAR — Special Federal Aviation Regulation
• HAC — Hughes Aircraft Company
• TDZ — Touchdown Zone
• BAPA — Bangladesh Airline Pilots Association
• AOC — Aircraft Operating Company
• ACFO — Aircraft Certification Field Office
• GLONASS — Global Orbiting Navigation Satellite System, Russia
• CPCS — Cabin Pressure Control System
• IRVR — Instrument Runway Visual Range
• EFF — Effective from
• AGA — Aerodromes, Air Routes and Ground Aids

• V/STOL — Vertical or Short Take-Off and Landing
• AP — Airport Patrol
• V/S — Vertical speed
• ALPA-INT — Air Line Pilots Association - International
• WXR — Weather Radar
• MOGAS — Motor Gasoline
• NAT MWG — North Atlantic Mathematicians Working Group
• B&D — Bearing and Distance
• RTQC/A — Real Time Quality Control / Assessment
• MDH — Minimum Descent Height
• ASIAS — Aviation Safety Information Analysis and Sharing
• IABA — International Association of Aircraft Brokers and Agents
• ANS/CR — Air Navigation Services of the Czech Republic
• RSAP — Runway Safety Action Plan
• PPL — Private Pilot License
• LDAH — Landing Distance Available Helicopter
• STANAG — (NATO) Standardisation Agreement
• SAS — Scandinavian Airline Systems
• CAAFI — Commercial Aviation Alternative Fuels Initiative
• FAST — Final Approach Spacing Tool
• DAI — Direct Access Intercom
• ABET — Airspace Behavioral Engineering Technology
• IANC — International Airline Navigators Council
• EPROM — Erasable-Programmable Read-Only-Memory
• OE/AAA — Obstruction Evaluation/Airport Airspace Analysis
• AWAS — Automated Weather Advisory Station
• MAX CLB — Maximum Engine Thrust for Two-Engine Climb
• VDC — Volts, Direct Current
• ACDAC — Asociacion Colombiana de Aviadores Civiles
• IAASM — International Academy of Aviation and Space Medicine
• AREA — Automated En Route Air Traffic Control
• APP — Approach Control
• FRH — Fly Runway Heading
• AWPA — Australian Women Pilots' Association
• SHEL — Software, Hardware, Environment, Liveware
• IFATCA — International Federation of Air Traffic Controllers' Associations
• CVTS — Compressed Video Transmission Service
• ALA — Alighting Area
• CSI — Criticality Safety Index
• AADC — Airport Average Daily Capacity
• EFDP — European flight data processing(Eurocontrol)
• AAA — Asian Airliners Association
• DEPA — Departure Airfield
• FISMA — Federal Information Security Management Act of 2002
• DFI — Direction Finding Indicator
• RIMS — Runway Incursion Monitoring System
• SVN — Satellite Vehicle Number
• MDA — McDonnell-Douglas Aerospace
• AIS-TF — AIS Training Task Force
• SFAR-38 — Special Federal Aviation Regulation 38

• ESCO — Executive Support and Coordination Office
• PCGO — Part Cargo
• DVOR — Doppler Very High Frequency Omni Directional Range
• AFSFU — AFS Field Unit
• DASI — Digital Altimeter Setting Indicator
• FDMD — Flight Data Management and Distribution
• DTU — Data Terminating Unit
• NRZI — Non Return to Zero Inverted magnetic tape bpi
• EFL — Entry Flight Level
• ATPL — Air Transport Pilot Licence
• GO — Gas Oil
• SSAP SELECTOR — Session Service Selector
• ARINC 59MA — Airborne Announcement Tape Reproducer
• EATMS — European Air Traffic Management System
• DACT — Dissimilar Air Combat Training
• SETA — Systems Engineering and Technical Assistance
• DMR — Data Modification Request
• TCAS — Traffic Alert and Collision Avoidance System
• SIR — Screening Information Request
• ECVFP — Expanded Charted Visual Flight Procedures
• AVPAC — aviation VHF packet communications
• NTAP — Notice to Airman Publication
• EFP — Espaсa-France-Portugal Plan
• IFPL — Individual Flight Plan Message
• FPD — Flight Plan Database
• HTZ — Helicopter Traffic Zone
• ALTNLY — Alternately
• ATCA — Air Traffic Control Association, Inc.
• ATFMP — Air Traffic Flow Management Position
• GNLU — GNSS Navigation and Landing Unit
• NAT SPG — North Atlantic Systems Planning Group
• FREE OUT — Free of discharge costs to owners
• CPMIS — Consolidated Personnel Management Information System
• DEV — Deviation
• GDCA — General Directorate for Civil Aviation
• NARG — Navigation Aids and Area Navigation Group
• XM — External Master
• EASA — European Aviation Safety Authority
• ATCA — Air Traffic Controllers Association
• ASDE — Area Surveillance Detection Equipment
• AIRC — Aeronautical Information and Control
• FLCH — Flight Level Change
• AISAS — Aeronautical Information Services Automated System
• TXWY — Taxy Way
• ACOD — Area Conflict Detection
• BSU — Beam Steering Unit
• IFFN — Identification Friend, Foe or Neutral
• FO(IFO) — Fuel Oil/Intermediate FO
• ETOPS — Extended Range Twin-Engine Operations
• AOCI — Airport Operators Council International

• AO — Airlines Operator
• ALTN — Alternate
• ASIP — Aviation VHF-Very High Frequency- Packet Communication Simple Interface Protocol
• LDB — Limited Data Block
• ACL — Air Traffic Control Clearance
• PFR — Probability of Failure Repair
• MB — Merchant Broker
• CDU — Control and Display Unit
• ER TC — En-Route Tactical Controller
• DMRS — Database Management Reporting System
• CTOL — Conventional Takeoff & Landing
• MCSG — Military Committee Staff Group
• EATCHIP LO — EATCHIP Liaison Officer
• AWPG — Aviation Weather Products Generator
• ASPP — Aeronautical Fixed Service Systems Planning for Data Interchange Panel
• ACDMD — Air Collaborative Decision Making Demonstrator
• DER — Departure End of the Runway
• AIG — Accident Investigation & Prevention
• CCIF — Comit? Consultatif International Des Communications T?l?phoniques ? Grande Distance (French For International Telephone Consultative Committee
• ACN — Airspace Co-ordination Notification
• ADISP — Automated Data Interchange Systems Panel
• TAAATS — The Australian Advanced Air Traffic Services System
• AOPTF — Aerodrome Operations Task Force
• MTWA — Maximum Takeoff Weight Authorized
• ISSCA — Information Systems Security Certification Agent
• E-MSAW — En Route Automated Minimum Safe Altitude Warning
• ARINC 569 — Heading and Altitude Sensor
• IFO — International Field Office
• ADI — Automatic De-Ice and Inhibitor
• CIWS — CORRIDOR INTEGRATED WEATHER SYSTEM
• BTC — Basic Training Course
• ACAC — Arab Civil Aviation Council
• CESAR — Course Evaluation Sheets Analysis and Reporting
• DSCN — Direct Speech Circuit Networks
• CLT — Calculated Landing Time
• ANM — ATFM Notification Message
• MCC — Maintenance Control Center
• DPE — Designated Pilot Examiner
• CR(A)OC — Central Region (Air) Operations Centre
• AZ — Aerodrome zone
• AAM — Airbus Asset Management
• HFX — Holding Fix
• AFS — Automatic Flight System
• GNSSP — Global Navigation Satellite System Panel
• GHMI — Ground Human-Machine Interface
• CVFR — Controlled Visual Flight Rules
• ACAS — Airborne Collision and Avoidance System
• CGS — Centimeter-gram-second
• SMPS — Sector Maintenance Processor Subsystem
• DMS — Database Management System

• NATINAD(S) — NATO Europe Integrated Air Defence
• MKR — Marker Radio Beacon
• BRKHIC — Breaks in Higher Overcast
• LAHSO — Land And Hold Short Operation
• AAFG — ATM Added Functionality Sub-Group
• MSK — Minimum Shift Keying
• CMCSG — Civil and Military Co-ordination Sub-Group
• DABBS — DITCO Automated Bulletin Board System
• CAI — Contractor-Acceptance Inspection
• DP&P — Data Processing And Peripherals
• ALPL — Association Luxembourgeoise des Pilotes de Ligne
• TEMPO — Temporary
• IRCAS — Intranet Radio Coverage Analysis System
• ALPA — As the Air Line Pilots Association
• SAFI — Semi-Automatic Flight Inspection
• USOAP — Universal Safety Oversight Audit Program
• FPPS — Flight Plan Processing System
• AAF — ATM Added Functions
• SARP — Signal Automatic Radar Processing
• INM — Integrated Noise Model
• FCLT — Freeze Calculated Landing Time
• EIU — Electronic Interface Unit
• AGI — FAA Office of Government and Industry Affairs
• FMG — Frequency Management Group
• PATWAS — Pilot's Automatic Telephone Weather Answering Service
• CRNA — Centre Régional de la Navigation Aérienne
• TACH — Tachometer
• PT — Total Pressure
• EFPM — Extended Flight Plan Message
• ACTF — Aeronautical Charting Task Force
• AEEC — Airlines Electronic Engineering Committee (ARINC)
• CAOFA — Co-ordination of Air Operations in the Forward Area
• NAILS — National Airspace Integrated Logistics Support
• ACC-TC — ACC Tactical Controller
• ATNP — Aeronautical Telecommunications Network Panel
• PTOT — Provisional Take-Off Time
• IR — Ice on Runway
• AENA — Spanish Airport and Air navigation Administration
• GRAF — Ground Replay and Analysis Facility
• TT — Total Temperature
• TA — Traffic Advisory
• IPSE — Integrated Programming Support Environment
• ALR — Alerting message
• IAR — Intersection of Air Routes
• EC — East Coast
• GDE — Ground Delay Enhancements
• ETN — Electronic Telecommunications Network
• VCR — Visual Control Room
• CAR — Caribbean Region
• AFL — Assigned Flight Level

• HDQ — FAA Headquarters
• IRMC — Integrated Risk Management Checklist
• CMSA — Carrier Sense Multiple Access
• DSUA — Dynamic Special - Use Airspace
• ANE — New England Region
• GFM — Government Furnished Materials
• MDAU — Maintenance Data Acquisition Unit
• PIREPS — electronic pilot reports
• SECRA — Secondary Radar Data Only
• PNF — Pilot Not Flying (aviation)
• RNLAF — Royal Netherlands Air Force (also KLu)
• ZFW — Zero Fuel Weight
• TDM — Track Definition Message
• DFTI — Distance-from-Touchdown Indicator
• LOS — Line-Oriented Simulation
• PC — Period of Charter
• ARINC 602A — Test Equipment Guidance
• EOPF — Electronic Official Personnel File
• STDMA — Self-organising Time Division Multiple Access
• DGB — Dangerous Goods Board
• RTA — Required Time of Arrival
• CSS — Central Site System
• ITI — Interactive Terminal Interface
• ATIC — Administrative and Technical Inspection Committee
• IVRS — interim voice response system
• CHI — Computer-Human Interface
• ADTN2000 — Administrative Data Transmission Network 2000
• REAL — Real time
• RPR — Real Property Report
• CEAC — Committee of European Airspace Co-ordination
• ASBA — American Shipbrokers Association
• TARMAC — Taxi and Ramp Management and Control
• IGP — Ionospheric Grid Points
• IAM — Institute of Aviation Medicine
• TMA — Terminal Area
• RPL — Repetitive Flight Plan
• EDDA — Environmental Due Diligence Audit
• ATR — Air Traffic Requirements
• VAAC — Volcanic Ash Advisory Centre
• IFATSEA — International Federation of Air Traffic Safety Electronic Associations
• D/A — Digital-to-Analog
• IMAWP — Initial Missed Approach Waypoint
• FMS — Flight management system
• FMA — Flight Mode Annunciator
• LACAC — Latin American Civil Aviation Commission
• CAAC — Civil Aviation Authority of China
• DAAIS — Danger Area Activity Information Service
• ADO — IFALPA Aircraft Design & Operation Committee
• ISSM — Information Systems Security Manager
• ELR — Extra Long Range

• DFL — Daily Flight Log
• HKALPA — Hong Kong Air Line Pilots Association
• GMCC — General National Airspace System Maintenance Control Center
• REGIS — Regional Information System
• SIGMET — Significant Meteorological Information
• ACA — Austrian Cockpit Association
• FMU — Flow Management Unit
• RPC — Restoration Priority Code
• ARU — Airspace Reservation Unit
• VSO — Stalling Speed in the Landing Configuration
• CLSD — Closed
• MPL — Multi-crew Pilot Licence
• CEATS UAC — Central European Air Traffic Services Upper Airspace Control Centre
• FGS/C — Flight Guidance System/Computer
• KECU — Thousands of European Currency Units
• CMMC — Common Maintenance Monitoring and Control
• RCP — Radio Control Panel
• DTG — Distance-to-go
• EGALPA — Egyptian Air Line Pilots Association
• RMU — Radio Management Unit
• LVA — Large Vertical Aperture
• VLOF — Lift-off Speed
• RSA — Runway Safety Area
• AWSS — Automated Weather Sensors System
• AID — Airport Information Desk
• ADSP — ADS Processor
• FEAST — First European ATCO Selection Test Package
• ATIS — Aerodrome Terminal Information Service
• IAPL — IFPS APL Message
• FCM — Flight Confirmation Message
• ACE — Central Region
• ASPA — Asociacian Sindical de Pilots Aviadores de Mexico
• ACIPLA — Asociacian Civil de Pilotos de Lineas Aereas
• BRT — Brightness
• ALCC — Airlift Central Co-ordination Centre
• FPI — Fluorescent Penetrate Inspection
• ARSA — Airport Service Radar Area
• CFMU — Central Flow Management Unit
• DCCU — Data Communications Control Unit
• ASPLAB — Asociacion Sindical de Pilotos del Lloyd Aereo (Bolivia)
• DPDG — Diplomatic and Protocol Drafting Group
• QRA — Who Are You
• IFPPS — Integrated Flight Plan Processing System
• AMIDSHIPS — In or toward the centre of the ship
• IGCN — Independent Ground Communications Network
• NDB — Non-Directional Beacon
• ATHR — Autothrust System
• AIREP — Air-Report
• AIRNET — Airport Network Simulation Model
• DCAA — Danish Civil Aviation Administration

• DLASD — Data Link Application and System Document
• ANSA — International Advisory Group Air Navigation Services
• AIPA — Aeronautical Information Production Application
• AIRMET — Air Meteorological Information Report which may affect the safety of low-level aircraft operations
• ARSA — Airport Radar Serve Area
• NMCS — Network Monitoring and Control System
• DERA — Defense Evaluation and Research Agency
• IIE — Integrated Information Environment
• NB — NorthBound
• ARST — Arresting specify aircraft arresting
• AEROSAT — Aeronautical Satellite Council
• APLRIM — Association des Pilotes de Lignes de Mauritanie
• HWP — Holding Waypoint
• V/M — Volts-per-meter
• GFDI — GNSS Fault Detection and Isolation
• CEU — Central Executive Unit
• STCA — Short Term Conflict Alert
• EHA — European Helicopter Association
• COSP — Connection-Oriented Session Protocol
• GF — Gulf Air Company - Bahrain
• DEMO — Demonstration
• CPDLC — Controller Pilot Datalink Communications
• AJE — En Route & Oceanic Service, Air Traffic Organization
• CENTX — Central Telephone Exchange
• GGCS — Ground/Ground Communication System
• IPPC — Internet Pilot Planning Centre
• HIPERLAN — High Performance Local Area Network
• FPF — Flight Plan Fallback
• LDR — Labor Distribution Reporting
• CPC — Certified Professional Controller
• AISS — Aeronautical Information Server System
• AOF — Allocation of Functions
• JSS — Joint Surveillance System
• CEATS LSG — Central European Air Traffic Services Legal Sub Group
• ATI — Automatic Tracking Initiation
• ECAR — European Civil Aviation Requirement
• DDB — Dynamic Database Browser
• CMOS — Complementary Metal Oxid Semiconductor
• HEMS — Helicopter Emergency Medical Services
• LIH — Light Intensity High
• ATAC — Airspace Traffic Data Capture
• DIRF — Direction Finding
• HIRS — High-resolution Infrared Sounder
• CEF — Capacity Enhancement Function
• SESMA — Special Event Search and Master Analysis
• MONA USER — Monitoring Aids User
• VTR — Variable Takeoff Rating
• MTAT — Multiple Time Around Targets
• FDA — Flight Data Analysis
• ARCTR — Aeronautical Center

• FES — Fixed Earth Station
• FDMA — Frequency Division Multiplex Access
• NATMC — NATO Air Traffic Management Committee
• XY — Ryan Air
• FOG — For Our Guidance
• FIRE — Fire Station
• TKE — TrackAngle Error
• CRMCS — Central RADNET Monitoring and Control System
• LLC — Link Layer Control
• LAA — Local Airport Advisory
• DAIR — Direct Altitude and Identity Readout
• CLNP — Connection Less Network Protocol
• FI — Iceland Air
• SUPSIS — Supervisor
• ACH — ATC Flight Plan Change
• DCAA — Dual Call, Automatic Answer Device
• SRZ — Special Rules Zone
• WMSC — Weather Message Switching Center
• APATSI — Airport/air traffic system interface
• APV — Approach with Vertical Guidance
• HATR — Hazardous Air Traffic Report
• AFP — Area Forecast Panel
• PFAST — Passive Final Approach Spacing Tool
• NCW — Non Conformance Warning
• DUAT — Direct User Access Terminal
• GIB — Global Navigation Satellite System Integrity Broadcast
• EWA — Error Warning Area
• RE — Resident Engineer
• AAM — Office of Aerospace Medicine
• JPDO — Joint Planning and Development Office's
• IRT — Interrogation Repetition Time
• TARA — Terminal Area RNAV Applications Task Force
• PBS — Preferential Bidding System
• CDR — Cost Detail Report
• GLOC — Gravity-Induced Loss of Consciousness
• ARINC 569 — Airborne Distance Measuring Equipment
• DOD MIL — Department of Defence - military
• MASPS — Minimum Aviation Systems Performance Standards
• AAT — Associate Administrator for Air Traffic
• FNPT — Flight & Navigation Procedures Trainer
• CDD — Corporate Data Dictionary
• RML — Radar Microwave Link
• ACG — Advanced Concept Group
• RTP — Regional Transportation Plan
• NCD — No Computed Data
• EBC — Event Based Currency
• AOC — Aeronautical Operational Communications
• RTC — Radio Transmission Control
• FPM — Flight Path Monitor
• DEWIZ — Distance Early Warning Identification Zone

• ETX — End of Transmission
• SNOMAC — Syndicat National des Officiers Mecaniciens de l'Aviation Civile
• HDOT — Inertial Vertical Speed
• AWOS — Automatic Weather Observing System
• AFC — Airport Facilities Control
• FRA — Flap Retraction Altitude
• ANPAC — Associazione Nazionale Piloti Aviazione Commerciale
• AGATE — Advanced General Aviation Transport Experiments (NASA)
• GAT — General Air Traffic
• AUTOB — Automatic Weather Reporting System
• PSC — Program Support Center (US DHHS)
• SBSR — Space Based Secondary Radar
• BTEC — Business and Technician Education Council
• RATCF — Radar Air Traffic Control Facility
• IAPA — Instrument Approach Procedures Automation
• HIS — Horizontal Situation Indicator
• AJP — Operations Planning Services, Air Traffic Organization
• EUR — Region European Region
• KIAS — Knots Indicated Airspeed
• ARTS — Area Radar Training Squadron
• ALERT — Alert phase
• ALPA — Asociacion de Pilotos de Lineas Aereas
• ROD — Record Of Decision
• ODID — Operational Display and Input Development
• AMOSA — Association of Aviation Maintenance Organisations of Southern Africa
• AMIC — Area Manager in Charge
• HID — Host Interface Display
• DP — Departure procedures
• AOCC — aircraft operator control centre
• GRADE — Graphical Airspace Design Environment
• TORA — Take-Off Run Available
• FPP — Flight Plan Processing
• VTT — Vertical Threshold Test
• LAX — Identifier for Los Angeles
• FIO — Flight Information Office
• CRCO — Central Route Charges Office
• DDC — Data Display Console
• VTOL — Vertical Take-Off and Landing aircraft
• ALSEC — All Sectors
• ATFC — Air Traffic Flow Controller
• ODID — Operational Input and Display System
• ATCS — Air Traffic Control Service
• BECA — Belgium Cockpit Association
• IFG-NME WG — Implementation Facilitation Group of the National Management Experts Working Group
• M/SEC — Metres per second
• CAEP — Committee on Aviation Environmental Protection