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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
• OPS — Operations
• ACAS — Aircraft Collision Avoidance System
• LAN — Local Area Network
• NOTAMR — Notam Replacing another Notam
• N/A — Not Applicable
• LTHH — Liner Terms Hook/Hook (shipping)
• AVSEC — Aviation Security
• ADVON — Advanced Echelon
• RAIL — Runway Alignment Indicator Lights
• BTWN — Between
• D.O.T — Department of Transport
• ETA — Estimated Time of Arrival
• OPR — Office of Primary Responsibility
• MOLCHOPT — More or Less Charterers Option
• XBAR — Crossbar
• DLOSP — Dropping Last Outwards Sea Pilot
• T-VASIS T — Visual Approach Slope Indicator System
• DCE — Data Circuit-terminating Equipment
• IROI — Instantaneous Return on Investment
• OEM — Original Equipment Manufacturer (usually in reference to car parts)
• ABT — About
• FLSA — Fair Labor Standards Act
• ROM — Read-Only Memory
• FTP — File Transfer Protocol
• ANSI — American National Standards Institute, Inc.
• LASER — Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
• MSG — Message
• IT — Information Technology
• LRU — Line Replaceable Unit
• 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
• ICD — Interface Control Document
• ACCUM — Accumulate
• IQ — Intelligence Quotient
• DFAX — Digital Facsimile
• EPA — Environmental Protection Agency (US)
• C102 (TSO) — Helicopter Radar Approach, Issued 04/02/84
• CPU — Central Processing Unit
• TBA — To Be Advised
• FTE — Full Time Equivalent
• C/N0 — Carrier-to-Noise-Density Ratio
• IP — Internet Protocol
• DODAR — Diagnosis, Options, Decision, Assessment and Revision
• FIFO — First In, First Out

• B-RNAV — Basic Area Navigation
• IRL — Republic Of Ireland
• PDF — Portable Document Format (created by Adobe Acrobat)
• NOTAMC — Notam Cancelling another Notam
• DWAT — Deadweight
• A SMGCS — Advanced Surface Movement Guidance and Control Systems
• ANOVA — Analysis of Variance (statistics)
• A-VASIS — Advanced Visual Approach Slope Indicator System
• A — Ampere
• R B — Range and Bearing line
• FDEDANRSAOCLONL — Freight Deemed Earned, Discountless And Non-Returnable Ship And Or Cargo Lost Or Not Lost
• MAN — Metropolitan Area Network
• ARINC 422 — Guidance For Modification Status Indicators & Avionics Service Bulletins
• PPE — Personal Protective Equipment
• GUI — Graphical User Interface (goo-ey)
• QC — Quality Control
• BA FAIR — Braking action Fair
• Q.23 — Signalling system for PABX
• R&D — Research & Development
• MOU — Memorandum of Understanding (an MOU between Food & Drug Administratin and a regulatory agency in another country allows mutual recognition of inspections)
• X-BAND — The frequency range between 8000 and 12500 MHz
• FAQ — Frequently Asked Questions (sometimes Pronounced Fak)
• JP — Japan
• I AND Q CHANNELS — In-phase and Quadrature channels
• CRT — Cathode Ray Tube (type of TV)
• A/D CONVERTER — Analogue-to Digital Converter
• MTBF — Mean Time Before Failure
• BA NIL — Braking Action Nil
• POS REF — Position Reference
• WX — Weather
• X-WIND — Cross Wind
• RF — Radio Frequency
• D-GPS — Differential Global Positioning System
• Q PROCEDURE — Procedure to identify replacement flight plans
• EDI — Electronic Data Interchange
• EMARSSH — Europe, Middle East, Asia Route Structure of the Himalayas
• S-SUP — Sector Supervisor
• JAA AMC — JAA Acceptable Means of Compliance
• CAA SI — Civil Aviation Authority of Solomon Islands
• XGEO — Cancel GEO
• R-CHANNEL — Random Access Channel
• ERDF — European Regional Development Fund
• BA POOR — Braking Action Poor
• HALS / DTOP — High Approach Landing System / Displaced Threshold Operations
• W/STEP — With Step Change in Altitude
• P,R,D AREA — Prohibited, Restricted, or Danger Area
• EXTRAP — Extrapolate
• XECM — Cancel Executive Controller Message
• O&M — Operation and Maintenance
• KAEPA — Kuwait Aircraft Engineers and Pilots Association

• WAYPOINT — Position in space usually on aircraft's flight plan
• XLTR — Translater
• DEC — Digital Equipment Corporation
• PACOTS — Pacific Organised Track System
• D-OTIS — Data Link Operational Terminal Information Service
• OJT — On the Job Training
• D-ATSU — A Downstream Air Traffic Services Unit
• IFPRU — IFPS Responsible Unit
• NPV — Net Present Value {economics}
• M:M — Many-to-Many Relationship
• DA/H — decision altitude/height
• W/MOD — With Modification of Vertical Profile
• MOA — Memorandum Of Agreement
• IRR — Internal Rate of Return
• B/CRS — Back Course
• LTIOV — Latest Time Information of Value
• OBTEX — Offboard Targeting Experiments
• TBD — To Be Determined
• FAASTEAM — FAA Safety Team
• T-ATSU — Transferring ATS Unit
• GIS — Geographic Information System
• R,E&D — Research, Engineering and Development
• F&CM — Flow And Capacity Management
• SMEQ — Subjective Mental Effort Questionnaire
• D-TO NL — Derated Takeoff Engine Fan Speed
• EU — European Union (1994; formerly referred to as the EEC or EC)
• SMTP — Simple Mail Transfer Protocol
• LOI — Letter Of Intent
• HIRL — High Intensity Runway Lights
• XCOORD — Cancel Co-ordination
• EEO — Equal Employment Opportunity
• FY — Fiscal Year
• CTRL — Control
• CAA NZ — Civil Aviation Authority of New Zealand
• M-ADS — Modified Automatic Dependent Surveillance
• ARPA — Advanced Research Projects Agency (made early internet)
• FANOMOS — Flight track and Aircraft NOise Monitoring System
• T-CHANNEL — Time Division Multiple-Access Channel
• GPS — Global Positioning System (ex-NAVSTAR)
• DOD — United States Department of Defense
• CAA PNG — Civil Aviation Authority of Papua New Guinea
• FYI — For Your Information
• R-ATSU — The Receiving Air Traffic Services Unit
• COD — Cash On Delivery
• XASM — Cancel Assume
• SOW — Statement Of Work
• VAT — Value Added Tax
• CV — Curriculum Vitae
• I(FD) — MTI Improvement Factor
• ACK — Acknowledge (telecommunications; Cf. NAK)

• ARINC 424 — Navigation System Data Base
• IBM — International Business Machines Corporation
• WWW — World Wide Web
• NAAPE — National Association of Aircraft Pilots and Engineers
• RAARR — Radar Arrival
• SOP — Standard Operational Procedure
• VAFORIT — VAFOR Implementation
• DZ — Algeria
• V/TRK — Vertical Track
• BAHAMAS ALPA — Bahamas Airline Pilots Association
• JAAC/JAA CE — JAA Committee
• MLS — Microwave Landing System
• DAARWIN — Distributed ATM Architecture based on
• XCONF — Delete CONFlict
• ADP — Automated Data Processing
• PDA — Personal Digital Assistant
• XOFF/PDR — Cancel Off Predetermined Route
• EGATS — Eurocontrol Guild of Air Traffic Services
• O-QAR — Optical Quick Access Recorder
• C/S/S/N — Capacity/Safety/Security/Noise
• EAMG SSG — EAMG Systems Sub-Group
• CIP — Carriage and Insurance Paid to
• XMITR — Transmitter
• SAAFEA — South African Airways Flight Engineers Association
• GALPA — Ghanaian Air Line Pilots Association
• P.ACCS — Pairs of ACCs
• PCB — printed circuit board
• CAP — Civil Air Patrol
• XNSSR — Exit NSSR
• XFRQ — Cancel FreQuency message
• ESA — European Space Agency
• P.T.T — Push-to-Talk
• M/ASI — Mach/Airspeed Indicator
• LABSW — LABS Switch System
• I/AFSS — International AFSS
• LABSC — LABS GS-200 Computer
• IA-5 — International Alphabet Number 5
• PALLAS — Phased Automation of the Hellenic ATC System
• LOV — List Of Values
• BAREBOAT CHTR. — Bareboat Charter
• IA/CC — Indirect Access/Common Control
• EAD SGR — EAD Sub-Group
• AHRS — Attitude Heading Reference System
• XIFL — Cancel Intermediate Flight Level
• XBRIGHT — Cancel highlighting
• HADAMARD — Multi-radar processing written in ADA
• DOT — Department of Transport
• DAMFORDET — Damages for Detention
• LABSR — LABS Remote Equipment
• PAQ — Position Analysis Questionnaire

• AAF-1 — Director of Airway Facilities
• VBFNG(LO) — Low speed CAS at N g's to buffet onset
• VBF(LO) — Flaps up minimum buffet speed at current maneuver load factor minus altitude dependent variable
• P… — Prohibited Area
• XFDM — Cancel FDM
• AAGDI — Automated Air Ground Data Interchange
• ISDN — Integrated Services Digital Network
• VBFNG(HI) — High speed CAS at N g's to buffet onset
• HALPA — Hellenic Air Line Pilots Association
• EANPG — Regional European Air Navigation Planning Group
• ARINC 610 — Guidance For Design and Integration of Aircraft Avionics Equipment In Simulators, Supplement 1
• DE — Germany
• ATA — Area Transportation Authority
• DSS — Decision Support System
• HBARO — Barometric Altitude
• XHOLD — Cancel Hold
• AOG — Aircraft On Ground
• EXW — Ex Works
• CIO — Chief Information Officer
• 2H — Second Half
• NBFR — Not Before
• JAAB/JAA-B — Joint Boards
• HAWOP — Helicopter All-Weather Operations Study Group
• KARLDAP — Karlsruhe Automatic Data Processing and Display System
• FAACIS — FAA Communications Information System
• C87A — Low Range Radar Altimeters, Issued 01/01
• AFDK — After Dark
• JALPA — Jamaica Air Line Pilots Association
• KG — Kilogram
• JAARC — JAA Research Committee
• DARP(S) — Dynamic Airborne Route Planning (System)
• C91A — Emergency Locator Transmitter, Issued 04/85
• DRAM — Dynamic Random Access Memory (dee-ram) (computing)
• XEXPLT — Cancel Extrapolation
• PALPU — Pancyprian Airline Pilots Union
• ERP — Emergency Response Plan
• WAN — Wide Area Network
• EAPTU — Air Line Pilots Trade Union
• AGL — Above Ground Level
• LOB — Line Of Business
• CTR — Center
• LOA — Letter Of Agreement
• LED — law enforcement desk; light emitting diode
• CBT — Computer Based Training
• FAS — Free Alongside Ship
• DATALINK — Digitized Information Transfer (air/ground)
• RNG — Range
• CFR — Code of Federal Regulations
• GNP — gross national product (economics)
• ELBA — Emergency Location Beacon-Aircraft

• FACUTL — Facility Utilization System
• QTY — Quantity
• NADSW — NADIN Switches
• DABRK — Daybreak
• FAA — Federal Aviation Administration
• CFE — Customer-Furnished Equipment
• QOS — Quality of Service
• CDC — Computer Display Channel
• IMF — International Monetary Fund
• CONUS — Continental United States (48 Contiguous States and DC)
• EADCOS — EAD Co-ordination Group
• FAR — Federal Acquisition Regulation
• SAR — Search And Rescue
• ATC — Air traffic control
• ICAO — International Civil Aviation Organization
• SAN — Storage Area Network
• PALS — Precision Approach Lighting System
• CM — Centimeter
• IDP — Individual Development Plan
• DOS — Disk Operating System
• IANSSC — IANS Steering Committee
• EU-OPS — EASA Operations Regulations
• HDLTSBENDS — Half Despatch Lay Time Saved Both Ends
• ACFT — Aircraft
• ATA — Actual Time of Arrival
• MTTR — Mean Time To Repair
• QMS — Quality Management System
• SQL — Structured Query Language
• MHZ — Megahertz (Megacycles Per Second)
• DDU — Delivery Duty Unpaid
• CUG — Closed User Group
• OMB — Office of Management and Budget (U.S.)
• ITU — International Telecommunication Union
• NTSB — US National Transportation Safety Board
• PRE-OJT — Pre-On-the-Job Training
• ASM — Available Seat Mile
• HZ — cycles per second (hertz)
• FDP/RDP — Flight Data Processing/Radar Data Processing
• LVL — Level
• B/L — Bill of Lading
• ALT — Alternate
• NATO — North Atlantic Treaty Organisation
• PRI — Primary Rate Interface (ISDN)
• AAL — Above Aerodrome Level
• CHOPT — Charterers Option
• ATHWARTSHIPS — At right angles to the centreline of the ship
• ATCRBS — Air Traffic Control Radar Beacon System
• LADGPS — Local Area Differential Global Positioning System
• MSL — Mean Sea Level
• VHF — Very High Frequency

• IATA — International Air Transport Association
• Q&A — Question & Answer
• FOB — Free On Board
• ADC — Air Data Computer
• BPS — bits per second
• KE — Kenya
• FOIA — Freedom of Information Act
• LNG — Liquefied Natural Gas
• PM — Preventive Maintenance
• APR — April River Airport, April River, Papua New Guinea
• FLT — Full Liner Terms
• GSA — U.S. General Services Administration
• INFO — Information
• IWL — Institute Warranty Limits
• BVR — Beyond Visual Range
• CISO — Chief Information Security Officer
• BAF — Belgian Air Force
• HQ — Headquarters (HDQ Preferred)
• GMT — Greenwich Mean Time (Zulu)
• IAEA — International Atomic Energy Agency
• EXPLT — Extrapolate
• W — Watt
• K — Kilo-
• MIPS — Millions of Instructions Per Second
• TTG — Time-To-Go
• COOP — Continuity of Operations
• RCR — Runway Condition Reading
• OUTB — Outbound
• HAZMAT — Hazardous Material
• PSTN — Public Switched Telephone Network
• EEG — Electro-EncephaloGram
• DML — Data Manipulation Language
• EBCDIC — Extended Binary Coded Decimal Interchange Code (pronounced Eb-see-dik) (cf. BCD)
• FCC — Federal Communications Commission (US)
• CQD — Customary Quick Despatch
• VCRI — Verification Cross Reference Index
• ARINC 753 — HF Data Link System
• AT&T — American Telephone and Telegraph (U.S. company, also known as "Ma Bell")
• AMSL — Above Mean Sea Level
• TSTMS — Thunderstorms
• UA — Ukraine
• DDE — Dynamic Data Exchange (in software parlance)
• FDD — Freight Demurrage Deadfreight
• CEP — Circular Error Probable
• APU — Auxiliary Power Unit
• POS INIT — Position Initialization
• BOD — Beneficial Occupancy Date
• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• ETS — Estimated Time of Sailing
• UN — United Narions

• COGSA — U.S. Carriage of Goods by Sea Act
• AED — Automated external defibrillator
• NOAA — National Oceanic and Atmospheric Administration (US)
• AGW — All Going Well
• OPM — Office of Personnel Management
• BCR — Benefit/Cost Ratio
• IM — Information Management
• CPT — Carriage Paid To
• DEBRIEF — Debriefing
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• CNEE — Consignee
• CAA — Civil Aviation Authority
• LF — Low Frequency
• AC — Air Canada
• CASE — computer-automated software engineering
• KW — Kilowatt (one thousand watts) (measurement)
• CZ — Czech Republic
• BRI — Basic Rate Interface
• CAF — Currency Adjustment Factor
• LOI — Letter of Indemnity
• KBS — Knowledge-Based System
• LSD — Lashed Secured Dunnaged
• GE — Georgia
• RISC — Reduced Instruction Set Computer
• AFCS — Automatic Flight Control System
• ACMS — Aircraft Condition Monitoring System
• 16PF — Sixteen Personality Factor Questionnaire
• COS — Chief of Staff
• MTTF — Mean Time To Failure
• IR — Islamic Republic of Iran
• ALSTG — Altimeter Setting
• SALS — Short Approach Lighting System
• AF — Air Force
• EG — Egypt
• D-ATIS — Digital - Automatic Terminal Information Service
• ATDNSHINC — Any Time Day/Night Sundays and Holidays Included
• ETC — Estimated Time of Completion
• TCP — Transmission Control Protocol
• CIF — Cost, Insurance, Freight
• I/O — Input/Output
• ACPT — Accept
• EIS — Environmental Impact Statement (US)
• CAT — Category (e.g. CAT-5 cable)
• MIN — Minimum
• LOCID — Location Identifier
• MIL — Military
• AOR — Area of Responsibility. The assigned area to any given unit.
• IFB — Invitation For Bid
• 1 PPS — One Pulse Per Second
• TC/OC — Technical Control and Operational Control

• TTL — Transistor-Transistor Logic
• ALT — Altitude
• EXTRM — Extreme
• S — South
• DBMS — Data Base Management System
• PVC — Permanent Virtual Circuit (ATM)
• MBO — Management by Objective
• GPO — Government Printing Office
• DR — Disaster Recovery
• ALSF-2 — High Intensity Approach Lighting Systerm with Sequenced Flashing Lights.
• COTR — Contracting Officer Technical Representative
• SVC — Service
• KHZ — kilohertz (1000 cycles per second)
• WT — Weight
• FIM — Fault Isolation Manual
• MAX — Maximum
• SAE — Society of Automotive Engineers
• HUMS — Health and usage monitoring systems
• L/C — Letter of Credit
• GEN — General Motors
• NM — Nautical Mile
• CU — Control Unit
• PBX — Private Branch eXchange (company phone system)
• ETD — Estimated Time of Departure
• NEG — NEGative
• ADSY — Administrative Equipment Systems
• SMS — Safety Management Systems
• MAINT — Maintenance
• COTS — Commercial Off the Shelf Software
• RSPL — Recommended Spare Parts List
• BW — Bandwidth
• DME — Distance Measuring Equipment
• DHDATSBE — Despatch Half Demurrage on All Time Saved Both Ends
• ARINC 743 — Airborne Global Positioning System Receiver
• DVOF — Digital Vertical Obstruction File
• IFTO — International Federation of Tour Operators
• CM — Configuration Management
• PDN — Public Data Network
• PER SE — By Itself
• COA — Contract Of Affreightment
• TX / RX — Transmitter / Receiver
• DK — Deck
• TV — Television
• NOTAMN — New Notam
• UPU — Universal Postal Union
• AO — Authorizing Official
• PRN CODE — Pseudo Random Noise Code
• USAF — United States Air Force
• DMA — direct memory access (computer term)
• LEO — Low Earth Orbit (satellite communications)

• CGL — Circling Guidance Light
• ADDENDUM — Additional chartering terms at the end of a charter party
• CW — Continuous Wave
• RVR — Runway Visual Range
• CMO — Certificate Management Office
• IR — Iran Air
• PDPR — Per Day Pro Rata
• HU — Hungary
• RMS — root mean square (preferred over "RMS")
• CFR — Cost and Freight
• DDP — Delivered Duty Paid
• APAPI — Abbreviated Precision Approach Path Indicator
• RESA — Runway End Safety Area
• ACD — Automatic Call Distributor
• EPR — Engine Pressure Ratio
• CG — Center of Gravity (DXS)
• AE — Application Entity
• DES — Delivered Ex Ship
• CAVU — Ceiling And Visibility Unlimited
• RLLS — Runway Lead-In Light System
• ITIL — Information Technology Infrastructure Library
• RFQ — Request For Quote
• BY — Belarus
• ASR — Airport Surveillance Radar
• SNR — Signal-to-Noise Ratio
• OO — SkyWest Airlines
• IS — Iceland
• LEC — Local Exchange Carrier
• BELOW — Beneath the deck
• EMP — Electromagnetic Pulse
• DEC — December
• AVG — Average Voltage Gain
• EMS — Environmental Management Systems
• EFTA — European Free Trade Association (Geneva)
• CPIC — Capital Planning and Investment Control
• ELINT — Electronic Intelligence Satellite
• CAT — Computer Aided Testing
• MODEM — Modulator-Demodulator
• MK — Republic of Macedonia
• SWIM — System Wide Information Management
• DRP — Disaster Recovery Plan
• ENG — Engine
• MCE — Management Centre Europe
• OSI — Open Systems Interconnection (iso Standard)
• EXER — Exercise
• APS — Arrival Pilot Station
• MBPS — Megabits per second
• LIDO — Lufthansa Integrated Dispatch Operation
• NRL — Naval Research Laboratory
• N — North

• EPROM — Erasable Programmable Read-Only Memory
• ARINC 419 — Digital Data System Compendium
• ARINC 542 — Airborne Oscillograph Flight Data Recorder
• LAT — Latitude
• NOR — Notice of Readiness
• DIST — Distance
• ADS-C — Automatic Dependent Surveillance-Contract
• FD — Flight Director
• FAC — Facilities
• AVMED — Aviation Medicine
• WAC — World Aeronautical Chart
• P&I — Protection and Indemnity insurance
• CONOPS — Concept of Operations
• CCSD — command communications service designator; control communications service designator
• LDAP — Lightweight Directory Access Protocol (pronounced Ell-dap)
• DOLSP — Dropping Off Last Sea Pilot
• ARINC 561 — Air Transport Inertial Navigation System - INS
• AFA — Association of Flight Attendants
• CRF — Central Repair Facility
• XFR — Transfer
• HUM RES — Human Resources
• COBT — Calculated Off Block Time
• RCM — Requirements Correlation Matrix
• C — Centigrade
• FT — Feet
• RTE — Route
• 2D — Two-Dimensional
• EGA — Enhanced Graphics Adapter
• CKD — Completely Knocked Down
• AIRNAV — Airports and Navigation Aids Database System
• DEQ — Delivered Ex Quay (shipping)
• BAF — Bunker Adjustment Factor
• OPI — Office of Primary Interest
• ARINC 429 — Mark 33 Digital Information Transfer System
• DAFIF — Digital Aeronautical Flight Information File
• CRS — Course
• POS — Position
• HWCI — Hardware Configuration Item
• SCADA — Supervisory Control And Data Aquisition
• WO — Without
• CDB — Corporate Database
• AA — Always Afloat
• MRC — Monthly Recurring Charge
• FAR — Federal Aviation Regulation
• QUIS — Questionnaire for User Interface Satisfaction
• PABX — private automatic branch exchange (telephone)
• CLR — Clear
• ETO — Estimated Time Over
• SNGL — Single
• PCT — Percent

• EW — Eurowings
• IFF — Identification Friend or Foe (radar)
• CDL — Configuration Deviation List
• EAS — Equivalent Airspeed
• E — East
• DPI — Dots per inch.
• MMU — Memory Management Unit
• FD — Free Discharge
• MSA — Minimum Safe Altitude
• KM — Kilometer (1,000 meters)
• ETE — Estimated Time En Route
• AFSPS — Arrival First Sea Pilot Station
• EST — Estimated Starting Time
• AOM — Aircraft Operating Manual
• DRAUGHT — Depth to which a ship is immersed in water
• RMNDR — Reminder
• PCM — Pulse-Code Modulation
• RDP — Radar Data Processing
• FAA — Federal Aviation Authority
• HF — High Frequency
• AFB — Air Force Base (USAF)
• CAT X — Category x Precision Approach
• ARINC 743A — GPS/GLONASS Sensor
• EFQM — European Foundation for Quality Management's
• CI — China Airlines - Taiwan
• NPRM — Notice Of Proposed Rule Making
• CN — Change Notice
• EBU — Engine Build Unit
• ARINC 408A — Air Transport Indicator Cases And Mounting
• TK — Turkish Airlines
• L — Left
• CY — Cyprus Airways Ltd
• BM — Beam
• STTR — Small Business Technology Transfer
• FO — For Orders
• LUX — Findel International Airport, Luxembourg-Findel, Luxembourg
• AAAA — Always Accessible Always Afloat
• CRM — Crew Resource Management
• TOT — Total
• FOUO — For Official Use Only
• BDI — Both Dates Inclusive
• GSE — Ground Support Equipment
• ANS — Answer
• CMC — Central Maintenance Computer
• AT&T CSA — At&t Customer Support Associate
• DOS — United States Department of State
• SEQ — Sequence
• NESDIS — National Environmental Satellite, Data, and Information Service
• GHZ — Gigahertz
• HDLC — High-Level Data Link Control

• AAIM — Aircraft Autonomous Integrity Monitoring
• AIXM — Aeronautical Information Exchange Model
• RCU — Remote Control Unit
• IPT — Integrated Product Team
• PMP — Project Management Plan
• FMC — Federal Maritime Commission's
• DFDAU — Digital Flight Data Acquisition Unit
• A/C — Aircraft
• CDU — Control Display Unit
• ADDS — Aviation Digital Data Service
• BIT(E) — Built-ln-Test (Equipment)
• ITSM — Information Technology Service Management
• WG — Working Group
• CPD — Continuous Professional Development
• SRV — Server
• ADZY — Advisory
• LY — El Al Israel Airlines
• RMS ERROR — Root Mean Square error.
• ARINC 747 — Flight Data Recorder
• ATFM — air traffic flow management
• DHDWTSBE — Despatch Half Demurrage on Working Time Saved Both Ends
• MSDA — Material Safety Data Sheet
• PRF — Pulse Repetition Frequency
• EVM — Earned Value Management
• NTE — Not-To-Exceed
• PAR — Precision Approach Radar
• JCN — Job Control Number
• LOA — Length Overall
• ADF — Automatic Direction Finder
• BL — Bale
• DEA — Drug Enforcement Agency
• LF — Load Factor
• NEPA — National Energy Policy Act of 1992
• AOCS — Attitude and Orbit Control System
• OU — Croatia Airlines
• NOV — November
• RSVN — Reservation
• FDOD — CFMU – Flight Data Operations Division
• DTED — Digital Terrain Elevation Data (dee-ted)
• FRS — Functional Requirements Specifications
• RNP5 — Required Navigation Performance 5
• CX — Cathay Pacific Airways
• PQP — Project Quality Plan
• ITMRA — Information Technology Management Reform Act (Part of the Clinger-Cohen Act)
• ACARS — Aircraft Communications Addressing and Reporting System
• NW — Northwest Airlines
• HDOP — Horizontal Dilution of Precision
• FOT — Free On Truck
• DDD — Detailed Design Document
• BOC — Bell Operating Company

• ATMAC — Air Traffic Management Advisory Committee
• MAN — Manual
• MIT — Massachusetts Institute of Technology (U.S.)
• PKI — Public Key Infrastructure (cryptography)
• ITF — International Transport Workers' Federation
• R — Right
• EHF — Extremely High Frequency
• AF — Air France
• RAIM — Receiver Autonomous Integrity Monitoring
• MIRL — Medium Intensity Runway Lights
• CW — Clockwise
• ARINC 597 — Aircraft Communications Addressing And Reporting System
• NAAQS — National Ambient Air Quality Standards (US)
• IF — Intermediate Frequency
• ADC — Air Defense Command
• ERP — Effective Radiated Power
• LIDAR — Lander Light Detection and Ranging
• YD — Yaw Damper
• TEMP — Temperature
• AY — Finnair, Oyj - Finland
• MTBCF — Mean Time Between Critical Failures
• ISA — International Standard Atmosphere
• IRU — Inertial Reference Unit
• CONS — consumption
• HMI — Human Machine Interface
• NACA — National Advisory Committee for Aeronautics
• AOM — Aircraft Operations Manual
• ADCCP — Advanced Data Communications Control Procedures
• ARINC 575 — Mark 3 Subsonic Air Data System
• DHS — Department of Human Services
• OTFO — Operations Technical Field Office
• REQ — Request
• TBO — Time Between Overhaul
• ACT — Active
• FOD — Foreign Object Damage
• WOCL — Window of Circadian Low
• GFE — Government-Furnished Equipment
• ARINC 573 — Aircraft Integrated Data System Mark
• ANG — Air National Guard
• CGL — Circling Guidance Lights
• LT — Liner Terms
• FLT — Flight
• JAN — January
• EFMS — Experimental Flight Management System
• FOFFER — Firm Offer
• ATD — Actual Time of Departure
• AEA — Association of European Airlines
• ASD — Aircraft Situation Display
• AUTOCAD — Automatic Computer Aided Design
• CW — Carrier Wave

• CAVOK — Ceiling And Visibility OK (Kav-okay)
• TOR — terms of reference (ICAO/FAA)
• CVR — Cockpit Voice Recorder
• OVERBOARD — Over the side or out of the ship
• AUG — August
• KE — Korean Airlines
• TGT — Target
• NCS — National Communications System
• NASA — National Aeronautics and Space Administration (US)
• RDF — Radio Direction Finder
• NFPA — National Fire Protection Association
• AHL — Australian Hold Ladders
• DID — direct inward dial
• DOP — Dropping Outward Pilot
• A/D — Analog-to-Digital
• VSCF — Variable-Speed Constant Frequency
• WO — World Airways, Inc
• IMA — Integrated Modular Avionics
• AVAIL — Available
• AEW — Airborne Early Warning
• W — West
• IFOR — Implementation Force
• RNP — Required Navigation Performance
• FSRM — Facility Security Risk Management
• TDMA — Time Division Multiple Access
• 3D — Three Dimensional
• FEC — Forward Error Correction
• WPM — speech--words per minute
• AWB — Air Waybill
• BRK — Break
• EIB — European Investment Bank
• A02 — Automated Observation With Precipitation Discriminator
• RDIF — Radar Data Interchange Format
• ADIRS — Air Data Inertial Reference System
• F — Degrees Fahrenheit
• IN.HG. — inches of mercury
• NAVDB — Navigation Data Base
• AIP — Aeronautical Information Publication
• ARINC 603 — Airborne Computer Data Loader
• GW — Gross Weight
• GPRA — Government Performance and Results Act
• KBPS — kilobits per second
• DH — Decision Height
• PAPI — Precision Approach Path Indicator (aviation)
• EASA — European Aviation Safety Agency
• ACN — Aircraft Classification Number
• BR — Eva Airways Corporation
• NRT — Net Restricted Tonnage
• CPD — Charterers Pay Dues
• CCU — Central Control Unit

• TTY — Teletype Telex Machine
• VAN — Value Added Network
• FCL — Full Container Load
• MCW — Modulated Continuous Wave
• A&E — Architecture and Engineering
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• NOTAM — Notice to Airmen
• CCITT — Comite Consultatif International de Telegraphique et Telephonique (International Telegraph and Telephone Consultative Committee) [now ITU-T]
• ILO — International Labour Organisation
• ELT — Emergency Locator Transmitter
• A/A — Air-to-Air
• LH — Lufthansa German Airlines
• OGC — Open Geospatial Consortium
• DNRCAOSLONL — Discountless and Non-Returnable Cargo and/or Ship Lost or Not Lost
• TLV — Type-Length-Value
• CPDLC — Controller Pilot Data Link Communications
• CEQ — Council on Environmental Quality (U.S.)
• VSWR — Voltage Standing Wave Ratio
• BWAD — Brackish Water Arrival Draft
• OCT — October
• BOB — Bunker On Board
• BRG — Bearing
• BOFFER — Best Offer
• DDS — Digital Data Service
• ABV — Above
• CPS — characters per second
• FRB — Failure Review Board
• LZ — Balkan Bulgarian Airlines
• DGNSS — Differential Global Navigation Satellite System
• FREE EXINS — Free of any Extra Insurance
• BL — Blowing (METAR descriptor)
• XEU — European Currency Unit
• FACF — Final Approach Course Fix
• ARINC 557 — Airborne Voice Recorder
• MDA — Minimum Descent Altitude
• CDI — Course Deviation Indicator
• ALQDS — All Quadrants
• MDT — Mean Down Time
• MAG — Magnetic
• SHF — Super High Frequency
• IDS — Intrusion Detection System
• SN — Brussels Airlines
• AD — airworthiness directives (FAA)
• HIRO — High Intensity Runway Operation
• NAS — National Airspace System
• SBIR — Small Business Innovation Research
• DDM — Difference in Depth of Modulation
• MAA — Maximum Authorized Altitude
• SDLC — Software development life cycle
• ASTERIX — All-purpose Structured Eurocontrol Radar Information Exchange

• FZRA — Freezing Rain (METAR Code)
• EET — Estimated Elapsed Time
• ARINC — Aeronautical Radio Incorporated
• FANS — Future Air Navigation System
• FADEC — Full Authority Digital Engine Control
• RTOS — Real-Time Operating System
• PPI — Plan Position Indicator
• PHA — Preliminary Hazard Analysis
• EADI — Electronic Attitude Director Indicator
• T — Time
• 1 :1 — One-to-one relationship
• ECAM — Electronic Centralized Aircraft Monitor
• BROB — Bunkers Remaining on Board
• QPSK — aeronautical quadrature phase shift keying
• AUTOVON — Automatic Voice Network
• Z — Zulu (Greenwich mean time)
• EXEC — Execute
• V — Volt (measurement)
• MEL — Minimum Equipment List
• AWACS — Airborne Warning And Control System
• OK — Czech Airlines
• AFS — Aeronautical Fixed Service
• FP — Flight Plan
• GDOP — Geometric Dilution Of Precision
• BADA — Base of Aircraft Data ; Aircraft performance Data
• ARINC 542A — Digital Flight Data Recorder
• BOW — The forward part of a ship
• LLWAS — Low Level Wind Shear Alert System
• ARINC 421 — Guidance For Standard Subdivision of ATA Spec 100 Numbering System for Avionics
• DCA — Defensive Counter Air
• MOLOO — More or Less Owners Option
• ARINC 740 — Multiple-Input Cockpit Printer
• UL — Uplink
• DEM — German mark
• SU — Aeroflot Russian Airlines
• MECO — Main Engine Cutoff
• ADCOM — Address Commission
• SID — Standard Instrument Departure
• CHTRS — Charterers
• ID — IDentifier
• DR — Dead Reckoning
• FEIS — Final Environmental impact statement (US)
• OT&E — Operational Test and Evaluation
• CIRM — International Radio Maritime Committee
• FONSI — Finding of no significant impact. See Environmental impact statement (US)
• SP — Space
• DAF — Deliver At Frontier
• CVSM — Conventional Vertical Separation Minimum
• RSYD — Release Subject to Your Discretion
• PII — Personally Identifiable Information

• ARO — Air Traffic Services Reporting Office
• PRKG — Parking
• FZFG — Freezing Fog
• SEP — September
• FEP — Front End Processor
• DOI — United States Department of Interior
• PERF — Performance
• AVOL — aerodrome visibility operational level
• HUD — Head-Up Display
• SSALS — Simplified Short Approach Lighting Systerm
• HGT — Height
• DEIS — Draft Environmental Impact Statement (US)
• ISMLS — Interim Standard Microwave Landing System
• ARINC 566 — Airborne VHF Communications Transceiver And Mark 1 VHF SATCOM System
• A&P — Airframe & Powerplant
• CLD — Cloud
• DIR — Directory
• AWIPS — Advanced weather Interactive Processing System (NOAA)
• AFSS — Automated Flight Service Station
• SH — Showers
• ARINC 601 — Control/Display Interfaces
• ARINC 572 — Mark 2 Air Traffic Control Transponder
• FQR — Formal Qualification Review
• FRT — Freight
• C — Close
• DCE — Data Communication Equipment
• AOB — Air Order of Battle
• ALSF2 — ALS with Sequenced Flashers II
• HIRTA — High Intensity Radio Transmission Area
• SAW — Surface Acoustic Wave
• EDF — Electricité de France
• SS 30 — 30 Minutes after Sunset
• CAASA — Commercial Aviation Association of Southern Africa
• AD — Aerodrome
• MDO — Marine Diesel Oil
• NWS — National Weather Service (formerly U.S. Weather Bureau)
• ARTCC — Air Route Traffic Control Center
• SARPS — Standards and Recommended Practices
• AFFSC (E) — Air Forces Flight Safety Committee (Europe)
• TYPH — Typhoon
• CBI — Computer Based Instruction
• INS — Inertial Navigation System
• LW — Low Water
• NAS — National Aircraft Standard
• RM — Risk Management
• AIDC — Air traffic control Inter-Facility Ground Data Communications
• FL — Flight Level
• GML — Geography Markup Language
• W — White
• ACCT — Accounting Records

• GOES — Geostationary Operational Environmental Satellite
• CUST — Customs
• ALP — Airport Layout Plan
• CDRL — Contracts Data Requirements List
• ARINC 571 — Inertial Reference System
• A/C — Aircraft Commander
• NPS — Navigation Performance Scales
• HIWAS — Hazardous Inflight Weather Advisory Service
• AC — Altocumulus
• CTA/FIR — Control Area/Flight Information Region
• MTTRP — Mean Time to repair product
• PFD — Primary Flight Display
• CSD — Constant Speed Drive
• DA — Disbursement Account
• NI — Network Interface
• DBS — Direct Broadcast Satellite
• AOC — Airline Operation Control
• WP — Work Package
• VMC — visual meteorological conditions
• EIA — Extended Interaction Amplifier
• BENDS — Both Ends (shipping)
• FZDZ — Freezing Drizzle
• ODALS — Omnidirectional Approach Lighting Systems
• GS — Ground Speed
• LOFT — Line-Oriented Flight Training
• HMI — Hazardously Misleading Information
• ULR — Ultra Long Range
• DETRESFA — distress phase (lCAO)
• FIS — Flight Information Service
• FLAS — Flight Level Allocation Scheme
• ANSP — Air Navigation Service Provider
• PA — Pan American Airways
• ADIZ — Air Defense Identification Zone
• ARINC 750 — VHF Data Radio
• MLW — Maximum Landing Weight
• ALERFA — alert phase
• AP — Airport
• SV — Space Vehicle
• CFAR — Constant False Alarm Rate
• AACO — Arab Air Carriers Organisation
• AIRPROX — The code word used in air traffic incident report to designate aircraft proximity
• IPV6 — Internet Protocol Version 6
• HVAC — Heating, Ventilating, And Air Conditioning
• NAABSA — Not Always Afloat But Safely Aground
• CD — Candela
• EPCU — Electrical Power Control Unit
• ARINC 591 — Quick Access Recorder For Aids System
• MRA — Minimum Reception Altitude
• GA — General Aviation
• ACM — Airspace Control Measures

• A/P — Autopilot
• SAC — Strategic Air Command
• LGTD — Lighted
• ECAC — European Civil Aviation Conference
• FF — Fuel Flow
• CAP — Combat Air Patrol
• RFC — Request For Change
• CAT — Clear Air Turbulence
• POL STAT — Policy Statement
• RNP-10 — Required Navigation Performance
• GCA — Ground-controlled approach
• 8.33 STATE — A State initially implementing 8.33 kHz channel spacing
• COACP — Contract Of Affreightment Charter Party
• AVBL — available
• VMIN — Basic Clean Aircraft Minimum CAS
• TCU — Towering Cumulus
• FSS — Flight Service Station
• ATE — Automatic Test Engineer
• ND — Navigation Display
• B — Blue
• TAS — True Airspeed
• VGND — Ground Velocity
• ATLA — Air Transport Licensing Authority
• SSEC — Static Source Error Correction
• PROC — Procedure
• AQP — Advanced Qualification Program
• 4D FMS — 4D Flight Management System
• NORDO — No-Radio
• NRZ — Non-Return-To-Zero
• FLTCK — Flight Check
• RPV — Remotely Piloted Vehicle
• HO — Hold Over
• DNIC — Data Network Identification Code
• ATCSCC — Air Traffic Control System Command Center
• ADV — Advise
• HEX — Hexadecimal (base 16)
• 5LNC — Five Letter Name Code
• BT — berth terms
• FIOS — Free In/Out Stowed
• ILS — Instituteument Landing System
• EEI — Essential Elements of Information
• FMC — Flight Management Computer
• VSBY — Visibility
• THR — Thrust
• JPDA — Joint Probabilistic Data Association
• LGT — Light
• ARINC 559A — Mark 2 Airborne HF SSB/AM System
• SITA — Société Internationale de Télécommunications Aéronautiques
• IG — Inspector General (HHS)
• HZ — Haze (METAR Code)

• BCA — Benefit/Cost Analysis
• CROB — Cargo Remaining on Board
• JD TF — Job Description Task Force
• MMEL — Master Minimum Equipment List
• OL — Operating Location
• ARINC 757 — Cockpit Voice Recorder
• OWS — Owners
• TCA — Terminal Control Area
• ACU — Antenna Control Unit
• IMC — Instrument Meteorological Conditions
• ATUTC — Actual Times Used to Count
• FFA — Functional Failure Analysis
• ARINC 606 — Guidance For Electrostatic Sensitive Device Utilisation & Protection, Sup. 1
• IISLS — Improved Interrogation Side Lobe Suppression
• NASTEP — National Airspace System Technical Evaluation Program
• FOQ — Free On Quay
• FST — First
• CCIR — International Radio Consultative Committee (French Acronym)
• GBAS — Ground Based Augmentation System
• BA — Braking Action
• CART — Classification And Regression Tree (method In Statistical Analysis)
• IRS — Inertial Reference System
• SIP — State Implementation Plan
• NTZ — No Transgression Zone
• CAB — Civil Aeronautics Board
• CDT — Command Delivery Time
• SSR — Software Specification Review
• ILSP — Integrated Logistics Support Plan/Program
• FYG — For Your Guidance
• FRA — Federal Railroad Administration
• CTR — Container Fitted
• ATC-HMI — Air Traffic Control Human Machine Interface
• CR — Current Rate
• ARTS — Automated Radar Terminal System
• ACI — Airports Council International
• FPL — Full Performance Level
• GS — Glide Slope
• J2EE — Java 2 Enterprise Edition
• AITS — Automated Inventory Tracking System
• LT — Long Ton
• MVFR — Marginal Visual Flight Rules
• TDD — Time Division Duplex
• DEG — Degree
• CARSR — Common Air Route Surveillance Radar
• 1 :M — One-to-Many relationship
• MCT — Maximum Continuous Thrust
• NCAR — National Center for Atmospheric Research (US)
• LIM — Limit
• CFDS — Centralised Fault Display System
• UT — Universal Time

• ADZD — Advised
• NSAP — Network Service Access Point
• COTP — Connection-Oriented Transport Protocol
• VDF — Very high frequency Direction Finding station
• RIB — Routing Information Base
• CDM — Collaborative Decision Making
• FIW — Free in wagon
• DA — Decision Altitude
• EQPT — Equipment
• NPR — National Performance Review (office)
• PF — Pilot Flying
• ARINC 744 — Full Format Printer
• ALS — approach lighting system
• OP — Operational
• DEM — Demurrage
• NAT NAM — North Atlantic / North America
• ARAG — Amsterdam Rotterdam Antwerp Gent Range
• LATA — Local Access and Transport Area
• ARINC 596 — Mark 2 Airborne SELCAL System
• WGS 84 — World Geodetic System 1984
• IFR — Instrument Flight Rules
• CNL — Cancel
• ALTRV — Altitude Reservation
• EXTD — Extend
• LSA — Lysergic Acid Amide
• CRZ — Cruise
• PAMPLAY — PAM rePLAY system
• HDG — Heading
• ARPA — Advanced Research Project Agency's
• ASI — Air Speed Indicator
• MSSR — Monopulse Secondary Surveillance Radar
• VCO — Voltage Controlled Oscillator (Oscillation)
• NSSL — National Severe Storms Laboratory
• ASDE-X — Airport Surface Detection Equipment - X (frequency) band
• VCCS — Voice Communication and Control System
• MOD — Modified
• SVID — System V Interface Definition
• LRNS — Long-Range Navigation System
• TBS — To Be Supplied(by government)
• V — Velocity
• GRT — Gross Registered Tonnage/Tons
• ANA — All Nippon Airways
• ARINC 579 — Airborne VOR Receiver
• QUAD — Quadrant
• SGS 85 — Sovietic Geodetic System
• HG — Mercury (Latin Hydrargyrum)
• DPSK — Differential Phase Shift Keying
• AOV — Air Traffic Safety Oversight Service
• BSC — Binary Synchronous Communication
• JUL — July

• HOV — High Occupancy Vehicle
• SSR MODE S — Selective Address SSR
• CDTI — Cockpit display of traffic information
• AMA — Area Minimum Altitude
• AT — Air Traffic
• ACNZ — Airways Corporation of New Zealand Ltd
• PFN — Pulse-Forming-Network
• AMT — Aviation Maintenance Technician
• RMP — Radio Management Panel
• DBE — Disadvantaged Business Enterprise
• EST — Estimated Ship Time
• ANTHAM — Antwerp-Hamburg Range
• HAT — Height Above Touchdown
• OO — Owners Option
• BASE AM — Base Arrival Manager
• PJMM — Project Management Methodology
• SUA — Special-Use Airspace
• NEC — National Electric Code
• TCAS — Traffic Collision Avoidance System
• MM — Middle Marker
• PREV — Previous
• AUSEP — Australian RNAV Separation Standards
• ARINC 404A — Air Transport Equipment Cases And Racking
• SLEP — Service Life Extension Program
• MTBR — Mean Time Between Replacement
• FIR — Flight Information Region
• ACCID — Notification of an aircraft accident
• ASYNC — Asynchronous
• LCN — Load Classification Number
• AFCAC — African Civil Aviation Commission
• JAN — January
• WTSPT — Waterspout
• CST — Centistoke
• PSN — Packet Switched Network
• HALO — High Altitude, Low Opening (skydiving term)
• LORAN — Long-Range Aid to Navigation
• DEA — Data Exchange Agreement
• MNM — Minimum
• CDT — Controlled Departure Time
• BKN — Broken Sky (METAR Code)
• LTOG — Long Term Objectives Groups
• JMCT — Job Management Consultative Team [job analysis]
• RAD — Radio
• CAS — Calibrated Air Speed
• FSK — Frequency Shift Keying
• FA — Final Approach
• ELVENT — Electric Ventilation
• ALT HOLD — Altitude Hold Mode
• ATZ — Aerodrome Traffic Zone
• EFIS — Electronic Flight Information System

• NOSIG — No Significant Change
• AIRAC — Aeronautical Information Regulation and Control
• ADF — Automatic Direction Finding
• VTS — Vessel Traffic Service
• BYD — Beyond
• RTLS — Return To Launch Site
• ODS — Operational Data Store (knowledge management)
• AT — Air Transport
• NR. — Number
• MCA — Minimum Crossing Altitude
• FOQA — Flight Operations Quality Assurance Programs
• ALSF — Approach Lighting System With Sequenced Flashing Lights
• ATSAP — Air Traffic Safety Action Program
• ADVCTN — Advection
• DEL — Delete
• IU — If Used
• LIFR — Low Instrument Flight Rules
• PUP — Principal User Processor (NEXRAD)
• SUP — Supervisor
• DITCO — Defense Information Technology Contracting Office (formerly DECCO)
• GCU — Generator Control Unit
• FMGC — Flight Management Guidance Computer
• CNCL — Cancel
• HSI — Horizontal Situation Indicator
• WHO — World Health Organisation
• GUI — Graphic-User Interface
• AAA — Amended meteorological message
• TMU — Traffic Management Unit
• SUMI — Software Usability Measurement Inventory
• TSU — Technical Support Unit
• AACO — Arab Air Carriers Organization
• RAPPI — Random Access Plan-Position Indicator
• AFIL — Air Filed Flight Plan
• LDI — Landing Direction Indicator
• FHA — Functional Hazard Analysis
• CMIP — Common Management Information Protocol (ATM)
• AILS — Automatic Instrument Landing System
• ABAS — Aircraft-based Augmentation System
• TMA — Traffic Management Advisor
• A/S — Alongside
• FREQ — Frequency
• IF — Intermediate Fix
• AKARD — Available Knowledge And required system Research and Development
• COV — Cover
• FDR — Flight Data Recorder
• ALSF1 — ALS with Sequenced Flashers I
• CAS — Close Air Support
• NIMA — National Imagery and Mapping Agency (became National Geospatial-Intelligence Agency|NGA)
• FPM — Feet Per Minute
• NP — Propeller speed

• ATSU — Air Traffic Services Unit
• WINDR — Wind Direction
• ARINC 306 — Guidance For Designers Of Aircraft-Electronic Installations
• VASIS — Visual Approach Slope Indicator System
• JAR-OPS — Joint Airworthiness Requirements Operations
• AODR — Authorizing Official Designated Representative
• ACH — Air traffic control Flight Plan Change
• ADVY — Advisory
• ARINC 745 — Automatic Dependent Surveillance, Supplement 1
• ADA — Advisory Area
• LVL CHG — Level Change
• FEW — Few
• PIREP — Pilot (weather) Report
• SSR — secondary surveillance radar (ICAO/FAA)
• BIM — Building Information Model
• ADREP — Aircraft Accident/Incident Data Reporting System
• AAOSA — Always Afloat or Safe Aground
• M — Manual
• CON — Continuous
• MCP — Mode Control Panel
• LAAS — Local Area Augmentation System
• ARINC 566A — Mark 3 VHF Communications Transceiver
• CATX — Categorical Exclusion
• FRG — Federal Republic of Germany's
• DES — Descend
• CIE — International Commission on Illumination
• IAO — In And Out
• ACAIS — Air Carrier Activity Information System
• SARSAT — Search and Rescue Satellite
• MPO — Metropolitan Planning Organization
• C&A — Certification and Accreditation
• SATCAS — Selenia Air Traffic Control Automated System
• FTI — FAA Telecommunications Infrastructure
• CPS — Central Processing System
• SSR MODE S WG — Secondary Surveillance Radar Mode Selective WG
• ARINC 609 — Design Guidance For Aircraft Electrical Power Systems
• CLC — Course Line Computer
• ACSE — Application Control Service Element
• DL — Downlink Message
• JTSO — Joint Technical Standard Order
• RWY — Runway
• CFI — Certified Flight Instructor
• TBN — To Be Notified
• STAR — Standard Terminal Arrival Route
• LON — Longitude
• FEB — February
• DIP — Drop and Insert Point
• RSLS — Receiver Side Lobe Suppression
• APRT — Airport
• ARR — Arrive

• TM — Traffic Management
• DEP — Depart
• AAS — advanced automation system (FAA)
• LDG — Landing (aviation)
• C/N — Carrier-To-Noise Ratio
• HX — No Specific working hours
• APA — Allied Pilots Association
• ATO — Air Traffic Organization
• V&V — Validation & Verification
• JUN — June
• IFPZ — IFPS Zone
• GDP — Ground Delay Program
• TURB — Turbulence
• FILO — Free In/Liner Out
• DET — Detention
• PFI — Private Finance Initiative
• NMC — National Meteorological Center (US)
• DP — Dewpoint Temperatue
• ICASM — International Congress of Aviation and Space Medicine
• NL — Engine Revolutions per Minute
• LRU — Line Replacement Unit
• FSM — Flight Schedule Monitor
• ACAMS — Aircraft Condition Analysis and Management System
• DEM — Digital Elevation Model
• CPE — Customer Premise Equipment
• RATCC — Radar Air Traffic Control Center
• RESMA — Requirements for Emergency and Safety Airborne Equipment
• BBB — Before Breaking Bulk
• FR — From
• ANC — Air Navigation Commission
• ALPAP — Air Line Pilots Association of the Philippines
• OCC — Operations control center
• MOCA — Minimum Obstruction Clearance Altitude
• TDOP — Time Dilution of Precision
• AEFMP — Algeria, Spain, France, Maroc, Portugal Project
• TIAS — True Indicated Airspeed
• ATIS-B — Automatic Terminal Information Service - Broadcast
• DIA — Denver International Airport
• SSB — Single Side Band
• RNAV — Random Navigation Area Navigation
• DLP — Data Link Processor
• ATMAS — Air Traffic Management Automated System
• RSTD — Restricted
• ACCS — Air Command and Control System
• NDI — Nondestructive Inspection
• AZM — Azimuth
• UTC — Universal Time Coordinate
• MNS — Mission Needs Statement
• IRM — information resource management
• ARINC 574 — Passenger Announcement, Entertainment & Service Multiplex System

• PROF — Profile
• IOT&E — Independent Operational Test and Evaluation
• SSAP — Source Service Access Point
• DZ — Drizzle
• LHR — London Heathrow Airport, London, United Kingdom
• AGHME — Aircraft Geometric Height Measurement Element
• IMDG — International Maritime Dangerous Goods
• DES — Descent
• AAIB — Air Accident Investigation Branch
• ASMA — Aerospace Medical Association
• CAEM — Commission for Aeronautical Meteorology (WMO)
• CD-ROM — Compact Disk - Read Only Memory
• DTM — Digital Terrain Model
• AFISO — Aerodrome Flight Information Service Officer
• TODAH — Take Off distance available, helicopter
• MOC — Memorandum Of Cooperation
• OBO — Ore/Bulk/Oil vessel
• EV — every
• MT — Mertic Tonne
• AST — FAA Office of Commercial Space Transportation
• ECMT — European Conference of Ministers of Transport
• PRORES — Problem Resolution
• FIOST — Free In/Out and Trimmed
• ATIS — Automatic Terminal Information Service
• DETR — Department of the Environment, Transport and the Regions
• CIP — Capital Investment Plan
• MN — Magnetic North
• ASPH — Asphalt
• ATS — Air Traffic Services
• ADS-R — Automatic Dependent Surveillance-Report
• AMSS — Aeronautical Mobile Satellite Service
• CRAM — Conditional Route Availability Message
• WMSCR — Weather Message Switching Center Replacement
• RDSIM — Runway Delay Simulation Model
• TROP — Tropopause
• EGPWS — Enhanced Ground-Proximity Warning System
• SMGC — Surface Movement Guidance and Control
• AARA — Amsterdam-Antwerp-Rotterdam Area
• FCA — Free Carrier Alongside
• COB — Closing of Business
• AAP — Advanced Automation Program
• CEC — Commission of the European Communities ;
• ASN — Advance Shipment Notice
• FDPS — Flight Data Processing System
• STA — Scheduled Time of Arrival
• AOC — Aerodrome Obstacle Chart
• ARINC 600 — Air Transport Avionics Equipment Interfaces
• AP — Autopilot
• AACC — Airport Associations Co-ordinating Council
• MTD — Moving Target Detection

• ADZ — Advise
• RUC — Rapid Update Cycle
• FIOT — Free In/Out and Trimmed
• SGI — Silicon Graphics Incorporated
• OAT — Outside Air Temperature
• ADS-B — Automatic Dependent Surveillance-Broadcast
• SNPA — Subnetwork Point of Attachment
• ATLC — Atlantic
• I — Italy
• PTUL — Pilots Trade Union of Latvia
• BSS — Basis
• PROM — Programmable Read Only Memory (chip)
• DOC — Document
• ALCE — Airlift Control Element
• BS — Bootstrap Service
• ARSR — Air Route Surveillance Radar
• AOR-E — Atlantic Ocean Region East
• WAAS — Wide Area Augmentation System
• ADS — automatic dependent surveillance
• LOM — Compass Locator at the Outer Marker
• MOTNE — Meteorological Operational Telecommunication Network in Europe
• CASA — Civil Aviation Safety Authority
• ARINC 578 — Airborne ILS Receiver
• CRDA — Converging Runway Display Aid
• IMG — Immigration
• ELBA — Emergency Locator Beacon Aircraft
• QAR — Quick Access Recorder
• VASI — Visual Approach Slope Indicator
• ARINC 608 — Standard Modular Avionics Repair And Test System
• CRM — Cockpit Resource Management
• FRZN — Frozen
• BUECE — Back-up Emergency Communications Equipment
• MTI — Moving Target Indicator
• DESP — Despatch
• OCA — Oceanic Control Area
• RDPS — Radar Data Processing System
• TOP — Cloud Top
• UIR — Upper Information Region
• GNSS — Global Navigation Satellite System
• AIMS — Airplane Information Management System
• UAB — Until Advised By
• ITWS — Integrated Terminal Weather System
• AWOG — All Weather Operations Group
• CNDN — Canadian
• ACAS — Airborne Collision Avoidance System
• FIO — Free In/Out
• DBRITE — Digital Bright Radar Indicator Tower Equipment
• ACF — Area Control Facility
• AVI — Audio/Video Interleaved Format
• APM — approach path monitor

• ATAG — Air Transport Action Group
• ATCO — Air Taxi Commercial Operator
• IMPR — Improve
• JURG — Joint Users Requirements Group
• ETVCT — En Route Training Voice Communication Tool
• BI — Both inclusive
• AOPA — Aircraft Owners and Pilots Association
• ATCRB — Air Traffic Control Radar Beacon
• PMS — Performance Management System
• FSDO — Flight Standards District Office
• SDR — Service Difficulty Report
• ECS — Environmental Control System (Subsystem)
• ADLY — Arrival Delay
• HDD — Head Down Display
• FAP — Final Approach Point
• AIRS — Advanced Infrared Sounder
• LO — Low
• AFDS — Autopilot Flight Director System
• DRFT — Drift
• AFL — Actual Flight Level
• STOL — Short Takeoff And Landing
• DALR — Digital Audio Legal Recorder
• UAT — Universal Access Transceiver
• MLDT — Mean Logistic Down Time
• RTCA — Radio Technical Commission for Aeronautics
• DAPS — Days all Purposes
• PASTUS — Past Us
• FRQ — Frequent
• PHINOM — Nominal Bank Angle
• FIXM — Flight Information Exchange Model
• AECB — Atomic Energy Control Board
• SDIS — Switched Digital Integrated Service
• DIS — Distance
• AOC — Aircraft Operations Centre
• SM — Statute Mile
• HW — High Water
• SESAR — Single European Sky ATM Research
• QTG — Qualification Test Guide
• MUD — Mud Log
• CAAC — Civil Aviation Administration of China
• BN — Booking Note
• SOPA — Standard Operating Procedure Amplified
• BSU — Beam Steering Unit
• TMC — Thrust Management Computer
• AS — Altostratus
• FBO — Fixed-Based Operator
• PABX — Private Automated Branch EXchange (company Phone System)
• WFTU — World Federation of Trade Unions
• BRL — Building Restriction Line
• HAPI — Helicopter Approach Path Indicator

• ATFMS — Air Traffic Flow Management System
• AWOS — Automated Weather Observing System
• FCC — Flight Control Computer
• TWIP — Terminal Weather Information for Pilots
• LASKA — Learning And Skills Acquisition
• DTS — Dedicated Transmission Service
• ALRS — Alerting Service
• 8.33 CP — 8.33 Contact Person
• FIT — Free In Trimmed
• XTRK — Cross Track Error
• TDWR — Terminal Doppler Weather Radar
• CRN — Crane
• STAB — Stabilizer
• LCTD — Located
• TCP / IP — Transmission Control Protocol / Internet Protocol
• ASLAR — Aircraft Surge Launch And Recovery
• ARINC 413A — Guidance For Aircraft Power Utilisation And Transient Protection
• XAP — Crossing Alternate Proposal Message
• EFAS — En Route Flight Advisory Service
• 4D — Four-Dimensional
• CRAF — Civil Reserve Air Fleet
• F&E — Facilities and Equipment
• SGL — Signal
• M. — meter
• STWL — Stopway Lights
• AAIB — Air Accidents Investigation Branch
• FDIO — Flight Data Input/Output
• DEST — Destination
• AFIZ — Aerodrome Flight information Zone
• FTE — Flight Technical Error
• ARINC 605 — Users Guide For ARINC 616 Avionics Subset Of ATLAS Language
• RAD — Radial
• BRA — Bearing, Range and Altitude
• ACID — Aircraft Identification
• A/I — Accident/Incident
• IVSR — Interim Voice Switch Replacement Program
• DNSTRM — Downstream
• SUBJ — Subject
• KCAS — Knots Calibrated Airspeed
• INIT — Initial
• CEW — Civil Engineering Works
• SVCBL — Serviceable
• COP — Custom of Port
• 4D-NAV — 4D Navigation
• DSPY — Display
• RMK — Remark
• PFA — Probability of False Alarm
• FTS — Federal Telecommunications System
• IRD — Initial Requirements Document
• DOTCC — Department of Transportation Computer Center

• AOA — Airport Operations Area
• LORAN — Long Range Navigational System
• SDP — Service Delivery Point
• ALTM — Altimeter
• NSSFC — National Severe Storms Forecast Center
• AT&T ASDC — At&t Agency Service Delivery Center
• ST&E — Security Test and Evaluations
• JTIDS — Joint Tactical Information Distribution System (djay-tidz)
• DF — Direction Finding or Finder
• IMAL — Integrity Monitoring Alarm Limit
• SASKI — Name of an ATS Route reporting point
• ESDI — Enhanced Small-Device Interface
• ECG — En Route Communications Gateway
• LNAV — Lateral Navigation
• ALPA — Japan Air Line Pilots Association of Japan
• PDC — Pre-Departure Clearance
• ATAF — Allied Tactical Air Force (NATO)
• A01 — Automated Observation Without Precipitation Discriminator
• DF — Direction Finder (Finding)
• QDR — Reciprocal Magnetic Bearing
• AFIS — Airport Flight Information Service
• OPT — Optimum
• EOF — Emergency Operating Facility
• CFWU — Central Flow Weather Unit
• QAE — Quality Assurance Evaluator
• PMS — Pavement Management System
• ACC-PC — ACC Planning Controller
• CFIT — Controlled Flight into Terrain
• CTAF — Common Traffic Advisory Frequency
• AIMS — Aircraft Integrated Monitoring System
• BRF — Brief
• IUHTAUTC — If Used, Half Time Actually To Count
• RSR — en-Route Surveillance Radar
• FEU — Forty-Foot Equivalent Unit
• ABOVE DECK — On the deck
• AMSSP — Aeronautical Mobile Satellite Service Panel
• AAPA — Association of Asia Pacific Airlines
• PRN — Pseudo-Random Noise
• AIC — Aeronautical Information Circular
• ASPW — Any Safe Port in the World
• SATSAR — Satellite-aided Search And Rescue
• METAR — Meteorological Terminal Aviation Routine Weather Report
• PSS — Packet Switched Service
• COT — At the Coast
• A/N — Arrival Notice
• CBFT — Cubic Feet
• ATCT — Airport Traffic Control Tower
• GLOSS — Global Sea Level Observing System (of IOC)
• RAPPI — Radar Access Plan Position
• RPI — Real Property Inventory

• AEWPD — Adapted EATM Work Programme Document
• ASCII — American Standard Code for Interface and Interchange
• IVSI — Instantaneous Vertical Speed Indicator
• FACC — Feature and Attribute Coding Catalogue
• LTP — Landing Threshold Point
• BTN — Between
• ACL — Altimeter Check Location
• SEA/TAC — Seattle/Tacoma International Airport
• GRI — General Rate Increase
• ATTIS — AT&T Information Systems
• NRH — No Reply Heard
• ASCP — Aviation System Capacity Plan
• MAUW — Maximum All Up Weight
• IFRB — International Frequency Registration Board of the International Telecommunication Union
• BASE — Cloud base
• CNVTV — Convective
• ABM — Abeam
• MAR — March
• FSF IAS — Flight Safety Foundation International Aviation Safety
• ASDA — Accelerate-Stop Distance Available
• ODIF — Open Document Interchange Format
• ACR — Atlantic Co-ordinated Route
• IMPACT — Information Market Policy Actions
• RD — Requirements Document
• VCMAX — Active Maximum Control Speed
• EGT — Exhaust Gas Temperature
• AVHRR — Advanced Very High-Resolution Radiometer
• DME/P — Precision Distance Measuring Equipment
• A/H — Altitude/Height
• B&H — Bosnia & Herzegovina
• OTV — Orbital Transfer Vehicle
• ECA — European Cockpit Association
• TO EPR — Takeoff Engine Pressure Ratio
• PROB — probability
• SVVP — Software Verification and Validation Plan
• DRK — Derrick
• SSTS — Space Surveillance and Tracking System
• CDV — Compressed Digital Video
• IFPZ — Integrated Initial Flight Plan Processing System Zone
• PVD — Plan View Display
• BSS — Best Signal Selection
• AC — Advisory Circular
• SHAPE — Supreme Headquarters Allied Powers Europe (NATO)
• AOC — Aircraft Operating Company
• FAC — Fast as can
• PELA — Proficiency test in English Language for ATCOs
• ASR-WSP — Airport Surveillance Radar-Weather System Processor
• CSIS — Centralized Storm Information System
• SAT — Static Air Temperature
• LOF — Lloyds Open Form

• ACCC — Australian Competition Consumer Commission
• CWY — Clearway
• FI — Flight Instructor
• E M — signalling
• OFZ — Obstacle Free Zone
• ARINC 414 — General Guidance For Equipment And Installation Engineers
• API — FAA Office of International Aviation
• DESC — Descending
• ARINC 415 — Operation/Technical Guidelines On Failure Warning and Functional Test
• A/A — Air/Air
• AJR — System Operations Services, Air Traffic Organization
• XMT — Excluding
• VRB — Variable
• CFDS — Central Flight Data Suite
• CBM — Cubic Metres
• ARFF — Aircraft Rescue and Fire Fighting
• SCAT-1 APPROACH — Special Category 1 Approach
• QDM — Magnetic Heading
• AUTONAV — Auto-Navigation
• NADA — NADIN Concentrator
• AFIS — Aerodrome Flight Information Service
• SURVITE — Surveillance Integrated Tested for EATMS
• PAWES — performance assessment and workload evaluation
• RMI — Radio Magnetic Indicator
• PMA — Parts Manufacturer Approval
• ACSA — Allied Communications Security Agency
• AACI — Airports Association Council International
• TRU — True
• MEA — Minimum Enroute Altitude
• FIDS — Flight Information Display System
• LCL — Less Container Loaded
• ALRS — Approach Lighting System
• AFSFO — AFS Field Office
• ARP — Aerodrome Reference Point
• AATF — Airworthiness Assurance Task Force
• FOD — Foreign Object Debris
• MDD — Meteorological Data Distribution
• CRT — Cargo Retention Clauses
• SMT — station management (protocol)
• ARINC 742 — Design Guidance For Windshear Warning and Guidance Equipment
• RCH — Reach
• VNO — Maximum structural cruising speed
• TIS-B — Traffic Information Service Broadcast
• FDP — Flight Data Processing
• ELD — Electrical Load Database
• CDA — Continuous Descent Approach
• AIDS TO NAVIGATION — Artificial objects to supplement natural landmarks indicating safe and unsafe waters
• QF — Quality Factor
• UHF — Ultrahigh Frequency
• FSP — Flight Strip Printer

• DGELG — Dangerous Goods European Advisory Group
• ODAL — Omnidirectional Approach Lighting System
• ES&H — Environmental Safety And Health
• ICAO — International Civil Aviation Organisation
• YOYO — Only Y Available
• XNG — Crossing
• ARF — Airport Reservation Function
• IA — Inspection Authorization
• AMASS — Airport Movement Area Safety System
• GNCN — GENERAL CONDITIONS
• AOC — Airline Operational Control
• FG — Fog Gun
• AEV — Annual Equivalent Value
• ONC — Operational Navigation Chart
• FARAWAY — Fusion of Radar and ADS data through two WAY data link
• ARINC 528 — Airborne Tape Recorder
• GA — General Average
• PBD — Place Bearing/Distance
• FLM — Front Line Manager
• GEADGE — German Air Defense Ground Environment
• GEO — Geographic
• MODIS — moderate-resolution imaging spectrometer (NASA/GSFC)
• WSO — Weather Service Office
• HDG SEL — Heading Select
• ADSP — Automatic Dependent Surveillance Panel
• FWAD — Fresh Water Arrival Draft
• ATCCC — Air Traffic Control Command Center
• ACDO — Air Carrier District Office
• CWBS — Contract Work Breakdown Structure
• LRCO — Limited Remote Communications Outlet
• RBP — Radar Bypass Processor
• XPNDR — Transponder
• ARINC 594 — Ground Proximity Warning System
• BTH (R) — Beyond the Horizon (Radar)
• DVD — Dual View Display
• ERR — Error message
• AMS — Acquisition Management System
• TSNT — Transient
• CALS — Computer-aided Acquisition and Logistic Support
• CACRC — Commercial Aircraft Composite Repair Committee
• EB — Eastbound
• ATCO — Air Traffic Controllers Organization
• MTF — Modulation transfer function.
• TLOF — Touchdown and Lift-off Area
• ISLS — Interrogation Side Lobe Suppression
• ALF — Aloft
• ADIC — ATS Interfacility Data Communications
• ARINC 746 — Cabin Communications System, Supplement
• DMN — Data Multiplexing Network
• AO — Aircraft Operator

• WRNG — Warning
• HI FI SIM — High-Fidelity Simulator
• ATDS — Airborne Tactical Data Systems (USN)
• EIU — Even If Used
• AAME — Association of Aviation Medical Examiners
• APA(CV) — Air Line Pilots Association (Cape Verde)
• ARMATS — State Closed Joint-Stock Company of Armenian Air Traffic Services
• DMU — Data Management Unit
• ANCA — Airport Noise and Capacity Act
• 3D — Palair Macedonian
• TLS — Target Level of Safety
• CAVOK — Clouds and Visibility OK
• DGAC — Direction Générale de l’Aviation Civile
• BASE AMD — Base Arrival Manager Display
• M/V — Merchant Vessel
• AMVER — Automated Mutual-Assistance Vessel Rescue system
• CWS — Control Wheel Steering
• NCB — National Cargo Bureau
• DADS — Digital Aeronautical Database System
• EFB — Electronic Flight Bag
• SES — Single European Sky
• OMI — Organisation Maritime Internationale (French: International Maritime Organization; UN)
• A&F — IFALPA Administration & Finance Committee
• NSW — No Significant Weather
• ACAA — Air Carrier Association of America
• B/C — Benefit/Cost
• NGA — National Geospatial-Intelligence Agency (formerly National Imagery and Mapping Agency; US government)
• THR HOLD — Throttle Hold
• ARINC 602 — Test Equipment Guidance
• ARINC 576 — Mark 4 Subsonic Air Data System
• KT — Knots
• BAA — British Airport Authority
• ADA — Air Defense Area
• WMO — World Meteorological Organisation
• TBC — The Boeing Company
• FAF — Final Approach Fixes
• VNAV — Vertical Navigation
• A/G — Air-Ground
• ESRI — Environmental Systems Research Institute (developer of geographic information systems (GIS) software, Redlands, California)
• ECAC AREA — European Civil Aviation Conference Area
• DPNG — Deepening
• ADES — Aerodrome of Destination
• ITU WARC-95 — International Telecommunication Union World Radio Conference
• SA — System Administrator
• PMS — Program Management System
• ASPENN RPG — Aeronautical Fixed Service Planning Study EUR/NAM/NAT Regional Planning Group
• ITIRS — International Terrestrial Reference System
• DPTH — Depth
• FPA — Focal Plane Array
• AWOP — All Weather Operations Panel (ICAO)

• GLD — Glider
• RP — Restoration Priority
• CPF — Central Processing Facility
• MDA/H — Minimum Descent Altitude/Height
• FIX — position in space usually on aircraft�s flight plan
• A/G — Air/Ground
• EMAS — Engineered Materials Arresting System
• AIR — Aircraft Certification Service
• ECPIC — Electronic Capital Planning Investment Control
• AFFREIGHTMENT — The hiring of a ship in whole or part
• REIL — Runway End Identification Light
• DA — Descent Advisor
• EHSI — Electronic Horizontal Situation Indicator
• RTO — Rejected Take-Off
• MHA — Minimum Holding Altitude
• CNTRLN — Centerline
• NBCAP — National Beacon Code Allocation Plan
• FPAP — Flight Path Alignment Point
• TVE — Total Vertical Error
• AFMS — Automatic Flight Management System
• AAD — Assigned Altitude Deviation
• EATCHIP — European Air Traffic Control Harmonisation and Integration Programme
• ABDIS — Automated Data Interchange System Service
• SMR — Surface Movement Radar
• EFIS — Electronic Flight Instrument System
• OVC — Overcast (METAR Code)
• ALPA-FYROM — Air Line Pilots Association of The Former Yugoslav Republic of Macedonia
• ARAC — Aviation Rulemaking Advisory Committee (FAA)
• MNOP — Maximum Normal Operating Pressure
• BM — Beam, Maximum
• COBLDN — Closing of Business London
• ACEP — Airport Capacity Enhancement Plan
• DABS — Discrete Address Beacon System
• SITA — Société Internationale Télécommunique Aéronautique
• PDR — Preferential Departure Route
• F18 — Field 18 of Flight Plan
• IDENT — Identification
• BRM — Barometer
• ABOARD — On or within the ship
• ADT — Air Data Tester
• PHPD — Per Hatch Per Day
• OLDI — On-Line Data Interchange
• RD-CHANNEL — Random Data Channel
• HDWTS — Half Despatch Working Time Saved
• A — Aeroplane
• DAR — Designated Agency Representative
• IFPS — Integrated Initial Flight Plan Processing System
• VOM — Volt-ohm-milliammeter
• ERIDS — En Route Information Display System
• C/A CODE — Course / Acquisition Code

• RAES — Royal Aeronautical Society
• LS — Lumpsum Freight
• QP — Quality Plan
• ORCAM — Originating Region Code Assignment Method
• NAWAU — National Aviation Weather Advisory Unit
• APPR — Approach
• SATCOM — Satellite Communication
• KLM — KLM Royal Dutch Airlines
• DISCH — Discharge
• AEP — FAA Office of Aviation Policy Planning and Environment
• MMI — Marshall Management Instruction
• CSMC — Cyber Security Management Center
• BRITE — Bright Radar Indicator Tower Equipment
• HID/NAS/LAN — Host Interface Device/National Airspace System/Local Area Network
• CUF — Cumuliform
• MODE C — Altitude Reporting Mode of Secondary Radar
• NP — Network Protocol
• ARINC 577 — Audible Warning System
• FHEX — Fridays/Holidays Excluded
• ISPS — International Ships and Port Security system
• HED — Heading
• ASQP — Airline Service Quality Performance
• IA — International Alphabet
• INBD — Inbound
• COE — Center of Excellence
• AIFSS — Automated International Flight Service Station
• AFN — air traffic services facilities notification
• A/L — Anti-ice
• CFP — Cold Front Passage
• AAC — Airline Administrative Communication
• TRK — Track
• ALO — Air Force Liaison Officer
• IFE — In-Flight Emergency
• AIG — Airbus Industries Group
• GFP — Government Furnished Property
• CRT — Choice Reaction Time
• BANS — BRITE Alphanumeric System
• LMM — Compass locator at the middle marker
• EXP — Expect
• LAYCAN — Layday Cancelling Date
• ATSS — Airway Transportation Systems Specialist
• AASR — Aging Aircraft Safety Rule
• VTOL — Vertical Take-Off & Landing
• C-ATSU — Controlling ATS Unit
• HURCN — Hurricane
• MET — Meteorological
• DEGS — Degrees
• FDE-ICD — Flight Data Entry - Interface Control Document
• ATCRU — Air Traffic Control Radar Unit
• HEL — Helicopter

• CASS — Continuing Analysis and Surveillance System
• EAD — Earliest Arrival Date
• AOC — Aeronautical Operational Communications
• ARPL — ADEXP Format Repetitive Flight Plans Message
• GPWS — Ground Proximity Warning System
• HHMMSS — hour-hour / minute-minute / second-second
• ANP — Air Navigation Plan
• ISASI — International Society of Air Safety Investigators
• EFSTS — Electronic Flight Strip Transfer System
• ADLP — Aircraft Data Link Processor
• FPO — Flight Procedures Office
• LB — Local Battery
• 5-ST-RSG — 5-States Route Structure Group
• PALPA — Pakistan Air Line Pilots' Association
• TOD — Top of Descent
• MTOW — Maximum Take-off Weight
• IAG — International Association of Geodesy (IUGG)
• AFT — At or towards the stern or rear of a ship
• EARS — En Route Analysis and Reporting System
• NEXRAD — Next Generation Weather Radar
• LC — Local Control
• MALS — Medium-Intensity Approach Lighting System
• AVGAS — Aviation Gasoline
• QBI — Compulsory IFR flight
• AOR-W — Atlantic Ocean Region West
• STANINE — Standard Nine Score
• CG — centre of gravity
• MMR — Multi-Mode Receiver
• DOF — Date of Flight
• GN — Grain
• RPP — Radiation Protection Program
• CWP — Controller Working Position
• FCU — Flight Control Unit
• SFPL — System Flight Plan Processing
• TWY — Taxiway
• C-ATSU — Current Air Traffic Services Unit
• ARINC 741P1 — Aviation Satellite Communication System:Part I- Aircraft Installation Provisions
• FAL — Final Assembly Line
• ALOFT — Above the deck of the ship
• AJT — Terminal Service, Air Traffic Organization
• 4-MAST — 4-MAST group
• FMGS — Flight Management Guidance System
• CFDIU — Central Fault Display Interface Unit
• MSK — Minimum Shift Keying
• NMB — National Mediation Board
• CP — charter-party
• CASOR — Civil Area Services Operations Room
• SHL — Saville and Holdsworth Ltd
• TN — True North
• PT — Product Team

• APMS — Automated Performance Measurement System
• WND — Wind
• HELIOPS — Helicopter Operations Panel
• OPX — Off-Premises Exchange
• NYPE — New York Produce Exchange
• RCLL — Runway Centre Line Lights
• ACLT — Actual Landing Time Calculated
• VSP — Vertical Speed
• AAC — Mike Monroney Aeronautical Center
• IFSS — International Flight Service Station
• SVP — Supervisor
• ATCO — Air Traffic Control Officer
• CYTA — Cyprus Telecommunications Authority
• FE — Flight Examiner
• HP — Holding Pattern
• AICS — Aircraft Inventory and Charter System
• FSCAP — Flight Safety Critical Aircraft Parts
• FPCP — Flight Path Control Point
• SLOP — Strategic Lateral Offset Procedure
• VCSS — Voice Communications Switching System
• AATT — Advanced Aviation Transportation Technology
• ASI — Aviation Safety Inspector
• NOPT — No Procedure Turn Required
• APGSL — Air Line Pilots Guild of Sri Lanka
• RTSE — Reliable Transfer Service Element
• WBC — Weight and Balance Computer
• AAH — Autonomous Aircraft Hybrid
• LYR — Layer
• CPA — Chairman's program assessment; closest point of approach
• HST — Hypersonic Transport
• FPLMTS — Future Public Land Mobile Telecommunications System
• QCM — Quality Control Manager
• ATCSCC — Air Traffic Control Systems Command Center
• FSDPS — Flight Service Data Processing System
• ACRP — Airport Cooperative Research Program
• FBO — fixed base operator
• AFRAA — African Airlines Association
• AMIS — Aircraft Management Information System
• FHINC — Fridays/Holidays Included
• TAU — Range / Range rate
• MTCD — Medium Term Conflict Detection
• ATLAS — Air Traffic Land and Air Study
• SWAP — Severe Weather Avoidance Program
• DMSH — Diminish
• FOR — Free On Rail
• CAR — Civil Aviation Regulations
• LECT — Lecture
• THDG — True Heading
• CNS/ATM-1 — Communication, Navigation and Surveillance / Air Traffic Management Package 1
• AMOS — Automated Meteorological Observation Station

• ATOS — Air Transportation Oversight System
• NAVAID — Navigational Aid
• SRTM — Shuttle Radar Topography Mission
• DDP — Distributed Data Processing
• AOCC — Atlantic Operations Control Center
• ALPA-K — Air Line Pilots Association of Korea
• RDVS — Rapid Deployment Voice Switch
• NCN — Non-compliance Notification
• AEX — Automated Execution
• NAVSAT — Navigation Satellite
• G/A — ground to air
• ATFMU — Air Traffic Flow Management Unit
• HF — Human Factors
• B&D — Bearing and Distance
• ARN-2 (TABLE) — Radio Navigation Aids Associated with the Basic ATS Route Network Terminal Area and Instrument Approach Procedures
• VCY — Vicinity
• AGROUND — Touching or fast to the bottom
• FSD TF — Functional Specification Development Task Force
• FME — Force Majeure Excepted
• COMCO — Command Communications Outlet
• PIC — Pilot In Command
• NORAC — No Radio Contact
• ROC — Regional Operations Center (NATO)
• RTQC — Real Time Quality Control
• ADSEL — Address Selective SSR System
• DFS — Detailed Functional Specification
• OSH — Open Shelter Deck
• FPA — Flight Path Angle
• AVSI — Aerospace Vehicle Systems Institute
• DO — Diesel Oil
• VRS — Voice Response System
• ESEWD — East-Southeastward
• APPA — Asociacion Profesional de Pilotos Aviadores de Costa Rica
• VCMIN — Active Minimum Control Speed
• FPPU — Flight Planning and Flight Progress Updating
• GNDCK — Ground Check
• GRD — Geared
• CASTLE — Consolidated Automated System for Time and Labor Entry
• TDO — Tornado
• EARTS — En Route Automated Radar Tracking System
• OIG — Office of the Inspector General
• AA — AMERICAN AIRLINE
• AMSS — Aeronautical Mobile Satellite System
• ADS-P — Automatic Dependent Surveillance-Panel
• CMPL — complete
• BUNKERS — Name given for vessels Fuel and Diesel Oil supplies
• NPDU — Network Protocol Data Unit
• ATOMS — Air Traffic Operations Management System
• EATCHIP OCD — Operational Concept Document
• AERA — Automated En Route Air

• AOC — Aeronautical Operation Control
• HBS — Hotline Back-up System
• ERIP — EAD Remote Interface Package
• ACM — Acceptable Means of Compliance
• QFU — Magnetic orientation or runway in use
• SAS — Scandinavian Airlines System
• BORG — Basic Operational Requirements Group
• FSAS — Flight Service Automation System
• CLKWS — Clockwise
• FWDD — Fresh Water Departure Draft
• AALPBH — Association of Airline Pilots in Bosnia & Herzegovina
• ATCU — Air Traffic Control Unit
• ETG — Enhanced Target Generator
• RCLS — Runway Centerline Lighting System
• PCB&T — Personnel Compensation Benefits and Travel
• UAL — United Airlines
• FDE — Flight Data Entry
• FLIDRAS — Flight Data Replay and Analysis System
• AFO — Airport Field Office
• JST — Joy Stick
• FSYS — Flight Service Station Equipment Systems
• AAATS — Australian Advanced Air Traffic Services
• TARE — Telegraphic Automatic Relay Equipment
• CWAR — Continuous Wave Acquisition Radar
• ARO — Airport Reservation Office
• ARN-1 (TABLE) — Basic ATS Route Network in the Lower and Upper Airspace
• DR — Drifting (METAR descriptor)
• FRM — Financial Resources Management Core Team
• DG — Directional Gyroscope
• AACC — Airport Associations Co-coordinating Council
• DOM — Domestic
• FCL — Flight Crew Licensing
• AUW — All Up Weight
• PRM — Precision Runway Monitor
• NTN — Network Terminal Number
• AASA — Air Lines Association of Southern Africa
• ASC — AUTODIN Switching Center
• ARINC 585 — Electronic Chronometer System
• AWO — All Weather Operations
• CMIS — Common Management Information System
• P&H — Press and Hold
• ADDA — Administrative Data
• VM(LO) — Minimum Maneuver Speed
• DYSIM — Dynamic Simulator
• BTL — Between layers
• PATCG — PHARE Advanced Tools Co-ordination Group
• BCC — Battery Charge Controller
• ARINC 541 — Airborne Magnetic Flight Data Recorder
• CAST — Certification Authority Software Team
• CIDIN — Common ICAO Data Interchange Network

• ADIS — Automatic dependent surveillance and Data Link Interim System
• AM — AeroMexico
• A/T — autothrottle
• SSFDR — Solid-State Flight Data Recorder
• IGFET — Insulated Gate Field Effect Transistor
• CPCS — Consolidated Production Control System
• JAL — Japan Air Lines
• FPB — Flight Progress Board
• ARINC 551 — Airborne Glide Slope Receiver - Mark 2
• ARINC 748 — Communications Management Unit
• MTW — Mountain Waves
• CAMI — Civil Aerospace Medical Institute
• ARINC 751 — Gate-Aircraft Terminal Environment Link - Aircraft Side
• DADC — Digital Air Data Computer
• DNSLP — Downslope
• FTC — Fast-Time Constant
• DITS — Digital Information Transfer System
• DARC — Direct Access Radar Channel
• AEREA — Association of European Research Establishments in Aeronautics
• MCK — Maintenance Check
• FRNG — Firing
• AFI — Africa-Indian Ocean Region
• MAX CLB — Maximum Engine Thrust for Two-Engine Climb
• FIS-B — Flight Information Services - Broadcast
• ARINC 307 — Aircraft Integrated Data System Wire Bundle Provisions
• IAT — Investment Analysis Team
• APN — apron
• ASE — Altimetry System Error
• AJW — Technical Operation Services, Air Traffic Organization
• ALPA-SA — Air Line Pilots Association - South Africa
• FMF — Facility Master File
• SRMDM — Safety Risk Management Memo
• ASA — Airservices Australia
• FIFO — Flight Inspection Field Office(s)
• FDESP — Free Despatch
• OAG — Official Airline Guide
• AV — Avianca (Aerovias del Continente Americano) Colombian Airline
• ATILO — Administrative Tribunal of the International Labour Organisation
• CFL — Cleared Flight Level
• EEC — Electronic Engine Control
• EIRP — EffectiveIsotropic Radiated Power
• 8.33 PMC — 8.33 Programme Management Cell
• ARINC 7411P2 — Aviation Satellite Communication System: Part 2 - Satellite Design
• EX GDR — ex German Democratic Republic
• FREE OUT — Free of discharge costs to owners
• C/S — Call Sign
• FPS — Flight Progress Strip
• ANGB — Air National Guard Base
• DATAC — Digital Autonomous Terminal Access Communication
• LRNAV — Long Range Navigation

• RTCM SC — Radio Technical Commission for Maritime Services Special Committee
• FLAS — Flight Level Allocation System
• AAFCE — Allied Air Forces Central Europe
• MIRACULIX — Multi Interface Radarformat Calculator and
• NAT MWG — North Atlantic Mathematicians Working Group
• NAT SPG — North Atlantic Systems Planning Group
• LOE — Line Oriented Evaluation
• LVE — Leave
• DFDR — Digital Flight Data Recorder
• MAT — Maintenance Access Terminal
• DUATS — Direct User Access Terminal System
• FPZ — Flight Path Zone
• DNG — Danger
• ACI-NA — Airports Council International-North America
• CUR — Controller
• ERAM — En Route Automation Modernization
• DFRT — Deadfreight
• AFTN — Automated Fixed Telecommunications Network
• 5-STRSSG — 5-States Route Structure Steering Group
• AJO — Chief Operating Officer, Air Traffic Organization
• EFC — Expected Further Clearance
• ARR SP — Arrival Sequence Planner
• GENOT — General Notice
• IANS — Institute of Air Navigation Services
• APC — Aeronautical Passenger Communication
• MALPA — Mauritius Air Line Pilots Association
• RA — Resolution Advisory
• AUX — Auxilliary
• OSA — Operational Safety Assessment
• ABAFT — Toward the rear of the ship
• OPLAN — Operational Plan
• WSW — West-South-West
• ADAP — Airport Development Aid Program
• GEORGIAN ALPA — Georgian Air Line Pilots Association
• ETOPS — Extended Range Twin-Engine Operations
• T/O — Takeoff
• CNS/ATM — Communication, Navigation and Surveillance / Air Traffic Management
• IACA — International Air Carrier Association
• ATCEUC — Air Traffic Controllers European Unions Coordination
• AEGIS — Airborne Early Warning Ground Environment Integrated Segment
• ATK — Air Traffic Controller Acknowledgement
• RID — review item description
• FISO — Flight Information Service Officer
• TOGA — Takeoff/Go-Around
• AMCP — Aeronautical Mobile Communications Panel
• AJS — Safety Services, Air Traffic Organization
• AORTF — ATM Added Functionality Operational Requirements Task Force
• AMDA — Airlines Medical Directors Association
• CATCO — Chief ATC Operations
• AIT — Automated Information Transfer

• AEA — Eastern Region
• MTRAQ — Multi track quality
• FREQ — Next Sector frequency
• PANS-OPS — Procedures for Air Navigational Services - Aircraft Operations
• NLA — New Large Aircraft
• PIREP — Pilot Report
• AIREP — Plain language form of Air Report
• RLSD — Released
• ANS/CR — Air Navigation Services of the Czech Republic
• ESCAT — Emergency Security Control of Air Traffic
• ATCI — Airport ATC and Information systems
• DFW — Dallas Fort Worth International Airport
• RNLAF — Royal Netherlands Air Force (also KLu)
• ATN — Aeronautical Telecommunications Network
• SASS-C — Surveillance Analysis Support System - Centre
• FQIS — Fuel Quantity Indicating System
• LMM — Locator middle marker
• GADO — General Aviation District Office
• FFAC — From Facility
• EATCHIP LO — EATCHIP Liaison Officer
• U/L — Upper / Lower
• V/S — Vertical speed
• VBX — Visual Basic Extensions
• ISL — Intermediate Supplementary Flight Level
• ASAS — Aviation Safety Analysis System
• CENRAP — Center Radar ARTS Presentation
• ALD — Airlift Division
• ATCC — Air Traffic Control Centre
• AHR — FAA Office of Human Resources
• AACE — Airfield Approach Control Element
• AFIS — Automated Flight Inspection System
• GMU — GPS (Height) Monitoring Unit
• AOPG — Aerodrome Operations Planning Group
• CAAF — Civil Aviation Authority of Fiji
• MORS — Mandatory Occurrence Reporting Scheme
• OBST — Obstacle
• 4DTN — 4D Trajectory Negotiation
• TODA — Take-Off Distance Available
• SEMP — Software Engineering Management Plan
• HHMM — Hours and minutes
• AAC — Aeronautical Administration Communication
• CAEG — Computer-aided Engineering Graphics
• AFD — Airport Facility Directory
• FISA — Automated flight Information Service
• VPATH — Vertical Path
• DP&P — Data Processing And Peripherals
• CLNP — Connection Less Network Protocol
• ABET — Airspace Behavioural Engineering Technology
• ALPA-A — Air Line Pilots Association of Armenia
• IFL — Intermediate Flight Level

• ANMS — Automated Network Monitoring System
• IUAI — International Union of Aviation Insurers
• SSAP SELECTOR — Session Service Selector
• HS-DTS — High Speed Data Transmission System
• RTS — Return To Service
• GEOREF — Geographical reference
• EEC — Eurocontrol Experimental Centre
• HAA — Height Above Airport
• ALCM — Air Launched Cruise Missile
• OH — Operational Handbook
• KB — Kilo Bytes (1,000 Bytes)
• CFD — Change to Flight Data Message
• FPFS — First Planned First Served
• MUT — Mean Up Time
• ASP — Arrival Sequencing Program
• AIRC — Aeronautical Information and Control
• STANAG — (NATO) Standardisation Agreement
• FLOWSIM — Traffic Flow Planning Simulation
• PTH — Path
• ADTN — Administrative Data Transmission Network
• FSF — Flight Safety Foundation
• ADS-C — Automatic Data Surveillance Contract
• OTR — Oceanic Transition Route
• AJF — Finance Services, Air Traffic Organization
• EU-FCL — EASA Flight Crew Licensing
• VDC — Volts, Direct Current
• RFL — Requested Flight Level
• ACS — airspace control system
• FIN — Finnair Oyj, Finland
• EFF — Effective from
• VY — Speed for best rate of climb
• ALLA — Allied Long-Lines Agency
• MSAW — Minimum Safe Altitude Warning
• BROKERAGE — Percentage of freight payable to broker
• PFL — Planned Flight Level
• IOSA — Iata Operational Safety Audit
• CAIRS — Cable Assignment Information Retrieval System
• ADIZ — Air Defence Identification Zone
• AP — Airport Plaza
• ARP — Aerospace Recommended Practice
• NADIN — National Airspace Data Interchange Network
• IACS — INTERGRAPH Aeronautical Charting System
• TAAATS — The Australian Advanced Air Traffic Services System
• ARTCC — Air Route Traffic Control Centre
• AFAS — Aircraft in the Future ATM System
• OGE — Operational Ground Equipment
• ASPM — Aviation System Performance Metrics
• FAX — Facsimile Equipment
• DEV — Deviation
• D — Derated

• AJA — Acquisition & Business Services, Air Traffic Organization
• AND — Associate Administrator for NAS Development
• AIM — Aeronautical Information Management
• FPPS — Federal Personnel Payroll System
• LCN — Local Communications Network
• IM — Inner Marker
• MVE — Move
• FIS-B — Flight Information Service - Broadcast
• CVTS — Compressed Video Transmission Service
• DCS — Double Channel Simplex
• ELNGT — Elongate
• RX — Receiver
• CIT — Compressor Inlet Temperature
• ARINC 592 — Airborne Passenger Tape Record
• ARSC — Air Rescue Sub Centre
• LCG — Load Classification Group
• V/STOL — Vertical or Short Take-Off and Landing
• FDSU — Flight Data Storage Unit
• OPADD — Operating Procedures for AIS Dynamic Data
• ADM — Aeronautical Decision Making
• JAI — Joint Acceptance Inspection
• ASRS — Aviation Safety Reporting System
• TEMPO — Temporary
• ALPA-S — Air Line Pilots Association - Singapore
• ARINC 741P4 — Aviation Satellite Communications System:Part 4 - Specification and Description Language
• FDMAS — Flight Data Management Automated System
• DOD — Department of Defence
• GSB — Good Safe Berth
• EHEST — European Helicopter Safety Team
• AEE — FAA Office of Environment and Energy
• SUP/ACC — Supervisor Area Control Centre
• ATTCS — Automatic Takeoff Thrust Control Systems
• AFTIL — Airway Facilities Tower Integration Laboratory
• DFGS/C — Digital Flight Guidance System/Computer
• HCP — Hard Copy Printer
• RLD — Rijks Luchtvaart Dienst
• GDLP — Ground Data Link Processor
• INSTRAT — Institutional Strategy for Air Traffic Management
• IW — Inside Wiring
• ARINC 752 — TFTS Airborne Radio Sub-System
• CNS — Communication, Navigation and Surveillance Systems, Inc.
• IAS — Indicated Air Speed
• ATAS — Airspace and Traffic Advisory Service
• ASECNA — Agence pour la Securité de la Navigation en Afrique et à Madagascar
• FISMA — Federal Information Security Management Act of 2002
• ALPA-INT — Air Line Pilots Association - International
• DRCP — Data Reduction Computer Program
• AIS-TF — AIS Training Task Force
• OAMP — Off-line Aircraft Management Program
• ADL — Aeronautical Data-Link

• AAMS — Aircraft Arrival Management System
• RAPNET — Regional ATC Packet switched Network
• ERD — End Routing Domain
• CATCAS — Copenhagen Air Traffic Control Automated System
• ACOD — Area Conflict Detection
• EC — East Coast
• REACT — Rain Echo Attenuation Compensation Technique
• CPCS — Cabin Pressure Control System
• EASA — European Aviation Safety Authority
• COCESNA — Central American Corporation for Air Navigation Services
• OMEGA — Very Low Radio Navigation System
• SS — Sunset
• BIMCO — The Baltic and International Maritime Council
• FDMD — Flight Data Management and Distribution
• BASOP — Military Base Operations
• SSW — South-South-West
• OMT — Onboard Maintenance Terminal
• AFM — Aeroplane Flight Manual
• HAC — Hughes Aircraft Company
• OGM — Objectives > Goals > Mission
• VS — Design Speed for Maximum Gust Intensity
• MTCDR — Medium-Term Conflict Detection and Resolution
• CARATS — Collaborative Actions for Renovation of Air Traffic Systems
• AGA — Aerodromes, Air Routes and Ground Aids
• AAL — Alaska Region
• IABA — International Association of Aircraft Brokers and Agents
• CEATS LSG — Central European Air Traffic Services Legal Sub Group
• HSPD — Homeland Security Presidential Directive
• MVA — Minimum Vectoring Altitude
• ER TC — En-Route Tactical Controller
• AOI — Area of Operational Interest; TERPS Office (USAF)
• GES — Ground Earth Station
• ANSEP — Air Navigation Services Economics Panel
• APDSG — Airspace Planning & Development Sub-Group
• RIMS — Runway Incursion Monitoring System
• ALRT — Alert
• STAC — Second Time Around Clutter
• IRVR — Instrument Runway Visual Range
• DSCN — Direct Speech Circuit Networks
• AFZ — Resource Management
• IAM — Institute of Aviation Medicine
• UAP — User Application Profile
• ARINC 406A — Airborne Electronic Equipment
• CAMA — Civil Aviation Medical Association
• MTWA — Maximum Takeoff Weight Authorized
• EFC — Expect Further Clearance
• EUROCONTROL — European Organisation for the Safety of Air Navigation
• AWX — All Weather Fighter
• MDAU — Maintenance Data Acquisition Unit
• AADC — Airport Average Daily Capacity

• ALPA-E — Air Line Pilots Association of Ethiopia
• SNIR — Signal-to-noise ratio
• AI — Application Interface
• AS — Airspeed
• ALTNLY — Alternately
• LYCN — Layday Cancelling Date
• ADMA — Aviation Distributors and Manufactureres Association
• RTQC/A — Real Time Quality Control / Assessment
• ASTA — Airport Surface Traffic Automation
• HFDL — High Frequency Data Link
• TWT — Travelling Wave Tube
• AOIS — Aeronautical Operational Information System
• JSS — Joint Surveillance System
• ATPL — Air Transport Pilot Licence
• AIDS — Airborne Integrated Data Systems
• ELS — Emergency Landing Strip
• MRVA — Minimum Radar Vector Altitude
• ACFS — Advanced Concepts Flight Simulator
• VFE — Flaps Extended Placard Speed
• DOD MIL — Department of Defence - military
• CTO — Calculated Time Over
• CZM — Conventional Zero Meridian
• ALPA-SL — Air Line Pilots Association of Slovenia
• ABET — Airspace Behavioral Engineering Technology
• AZ — Aerodrome zone
• AFAST — Active Final Approach Spacing Tool
• ALR — IFALPA's Airport Liaison Representative Program
• P — Procedure-Required Tuned NAVAID
• 5-SRSWG — 5-States Route Structure Working Group
• ARNG — Arrange
• DACS — Digital Aeronautical Chart Supplement
• IFPL — Individual Flight Plan Message
• CEATS UAC — Central European Air Traffic Services Upper Airspace Control Centre
• DTU — Data Terminating Unit
• OE/AAA — Obstruction Evaluation/Airport Airspace Analysis
• FMU — Flow Management Unit
• AOCI — Airport Operators Council International
• IAASM — International Academy of Aviation and Space Medicine
• ALTN — Alternate
• AJC — Communications Services, Air Traffic Organization
• MEB — Main Earthing Bar
• IFATCA — International Federation of Air Traffic Controllers' Associations
• CAR — Caribbean Region
• MTOM — Maximum Take-Off Mass
• D/A — Digital-to-Analog
• MAPT — Missed Approach Point
• OGP — Oil and Gas Producers Aviation Sub Committee
• ALPA — Airlines Pilots Association
• PSDN — Public Switched Data Network
• CES — Central and Eastern European States

• DMRS — Database Management Reporting System
• AFM — Affirmative Fair Housing Marketing
• COBALT — Common Objective Alignment Team
• SHEL — Software, Hardware, Environment, Liveware
• IFG-NME WG — Implementation Facilitation Group of the National Management Experts Working Group
• QTE — True Bearing
• POCC — Pacific Operations Control Center
• LDAH — Landing Distance Available Helicopter
• CAAFI — Commercial Aviation Alternative Fuels Initiative
• FP — Free Pratique
• ATA — Airport Traffic Area
• CL — Cost Index
• AAFG — ATM Added Functionality Sub-Group
• ERSS — Eurocontrol Radar Surveillance Standard
• AFCNF — Air Force Central NOTAM Facility
• ZFW — Zero Fuel Weight
• ARINC 569 — Heading and Altitude Sensor
• IAFP — Individual ATC Flight Plan Proposal
• FSSA — Flight Service Station Automated Service
• GLONASS — Global Orbiting Navigation Satellite System, Russia
• EFL — Entry Flight Level
• AOF — Allocation of Functions
• AREA — Automated En Route Air Traffic Control
• EDDA — Environmental Due Diligence Audit
• CTOL — Conventional Takeoff & Landing
• SPAS — Safety Performance Analysis System
• CUPS — Consolidated Uniform Payroll System
• CLG — Calling Line
• CRNA — Centre Régional de la Navigation Aérienne
• VC — Design Cruising Speed
• LVB — Luchtverkeersbeveiliging
• CANSO — Civil Air Navigation Services Organisation
• ARINC 595 — Barometric Altitude Rate Computer
• AAA — Airport Airspace Analysis
• COCESNA — Central American Corporation For Air Navigation Service
• WXR — Weather Radar
• TCAS — Traffic Alert and Collision Avoidance System
• ATCA — Air Traffic Controllers Association
• AIPA — Aeronautical Information Production Application
• DEPA — Departure Airfield
• ADEP — Aerodrome of Departure
• CDFA — Constant Descent Final Approach
• AQS — FAA Office of Quality, Integration and Executive Services
• ARO — Air Traffic Service Reporting Office
• SSM — Sign Status Matrix
• LCGS — Low Cost Ground Surveillance Radar
• PD — Profile Descent
• FDC — Flight Data Company
• EATMS — European Air Traffic Management System
• NATINAD(S) — NATO Europe Integrated Air Defence

• RCDSS — Radar Control and Display Subsystem
• EPROM — Erasable-Programmable Read-Only-Memory
• AFMT — Airway Facilities Management Team
• ACAC — Arab Civil Aviation Council
• GENOFIC — General North Sea Flight Information Centre
• SFAR — Special Federal Aviation Regulation
• ACPO — Aircraft Position Operator
• ATFMP — Air Traffic Flow Management Position
• WSFO — Weather Service Forecast Office
• NARG — Navigation Aids and Area Navigation Group
• RMMC — Remote Maintenance Monitoring and Control
• AIRNET — Airport Network Simulation Model
• ACAS — Airborne Collision and Avoidance System
• ATIC — Administrative and Technical Inspection Committee
• DASI — Digital Altimeter Setting Indicator
• FAST — Final Approach Spacing Tool
• AIRMET — Air Meteorological Information Report which may affect the safety of low-level aircraft operations
• OFT — Outer Fix Time
• FLCH — Flight Level Change
• NAV-1 — Radar Data System
• ADISP — Automated Data Interchange Systems Panel
• APATSI — Airport / Air Traffic Systems Interface
• IFO — International Field Office
• NTM F/T SIM — Nattenheim Fast Time Simulation
• AITSC — Administrative IT Steering Committee
• IAF — Initial Approach Fixes
• AWPA — Australian Women Pilots' Association
• ACDAC — Asociacion Colombiana de Aviadores Civiles
• EL — Electro-Luminescent
• MDA — McDonnell-Douglas Aerospace
• ALPL — Association Luxembourgeoise des Pilotes de Ligne
• IRCAS — Intranet Radio Coverage Analysis System
• CCIF — Comit? Consultatif International Des Communications T?l?phoniques ? Grande Distance (French For International Telephone Consultative Committee
• VAAC — Volcanic Ash Advisory Centre
• CDU — Control and Display Unit
• ESERN — East-Southeastern
• HIS — Horizontal Situation Indicator
• CTSKLS — Catskills
• EVAS — Enhanced Vortex Advisory System
• ETN — Electronic Telecommunications Network
• AWY — Airway
• V1 — Take-Off Decision Speed
• MOGAS — Motor Gasoline
• ATM — Air Transportation Management
• SETA — Systems Engineering and Technical Assistance
• DMR — Data Modification Request
• PFR — Probability of Failure Repair
• AEEC — Airlines Electronic Engineering Committee (ARINC)
• RBDPE — Radar Beacon Data Processing Equipment
• SECRA — Secondary Radar Data Only

• PCGO — Part Cargo
• SMPS — Sector Maintenance Processor Subsystem
• CPMIS — Consolidated Personnel Management Information System
• ACFO — Aircraft Certification Field Office
• RSAP — Runway Safety Action Plan
• APP — Approach Control
• AMIDSHIPS — In or toward the centre of the ship
• DL — Delta
• CESAR — Course Evaluation Sheets Analysis and Reporting
• FRH — Fly Runway Heading
• AP — Airport Patrol
• ACDMD — Air Collaborative Decision Making Demonstrator
• AISAS — Aeronautical Information Services Automated System
• DAI — Direct Access Intercom
• INM — Integrated Noise Model
• DERA — Defense Evaluation and Research Agency
• V/M — Volts-per-meter
• AFS — Automatic Flight System
• MOD — Memorandum of Decision
• ATCA — Air Traffic Control Association, Inc.
• CAAC — Civil Aviation Authority of China
• CGAS — Coast Guard Air Station
• NAT CMA — North Atlantic Region Central Monitoring Agency
• DDA — Dedicated Digital Access
• GO — Gas Oil
• HKALPA — Hong Kong Air Line Pilots Association
• ASIP — Aviation VHF-Very High Frequency- Packet Communication Simple Interface Protocol
• SFAR-38 — Special Federal Aviation Regulation 38
• FFM — Free Flight Mode
• DMS — Database Management System
• FPD — Flight Plan Database
• FCM — Flight Confirmation Message
• DIRF — Direction Finding
• D&D — Distress and Diversion
• AWAS — Automated Weather Advisory Station
• GNLU — GNSS Navigation and Landing Unit
• DE-TO PR — Derated Takeoff Engine Pressure Ratio
• IPSE — Integrated Programming Support Environment
• E-MSAW — En Route Automated Minimum Safe Altitude Warning
• PPL — Private Pilot License
• AWSS — Automated Weather Sensors System
• ARINC 59MA — Airborne Announcement Tape Reproducer
• IRMC — Integrated Risk Management Checklist
• AGI — FAA Office of Government and Industry Affairs
• MAA — maximum authorized IFR altitude
• FOG — For Our Guidance
• REAL — Real time
• ACIPLA — Asociacian Civil de Pilotos de Lineas Aereas
• HTZ — Helicopter Traffic Zone
• BAPA — Bangladesh Airline Pilots Association

• DFI — Direction Finding Indicator
• FZL — Freezing Level
• STDMA — Self-organising Time Division Multiple Access
• NAT IMG — North Atlantic Implementation Management Group
• FPPS — Flight Plan Processing System
• SIR — Screening Information Request
• DRDF — Digital Readout Direction Finder
• CLSD — Closed
• VHRR — Very High-Resolution Radiometer
• PNF — Pilot Not Flying (aviation)
• DVOR — Doppler Very High Frequency Omni Directional Range
• AFSFU — AFS Field Unit
• FMG — Frequency Management Group
• LAHSO — Land And Hold Short Operation
• DTG — Distance-to-go
• IGCN — Independent Ground Communications Network
• VLOF — Lift-off Speed
• DACT — Dissimilar Air Combat Training
• AIG — Accident Investigation & Prevention
• AVPAC — aviation VHF packet communications
• MB — Merchant Broker
• DPE — Designated Pilot Examiner
• MONA USER — Monitoring Aids User
• CR(A)OC — Central Region (Air) Operations Centre
• SO — Southern Airways
• CEATS — Central European Air Traffic Services
• NRZI — Non Return to Zero Inverted magnetic tape bpi
• TDZ — Touchdown Zone
• IAR — Intersection of Air Routes
• POC — Point-of-Contact
• SMD — Storage Module Device
• ASIAS — Aviation Safety Information Analysis and Sharing
• STCA — Short Term Conflict Alert
• ARTS — Area Radar Training Squadron
• ANM — ATFM Notification Message
• CRO-ALPA — Croatian Air Line Pilots Association
• AENA — Spanish Airport and Air navigation Administration
• HIRS — High-resolution Infrared Sounder
• NMCS — Network Monitoring and Control System
• APV — Approach with Vertical Guidance
• ERM — En Route Spacing Program
• IFEA — In-Flight Emergency Assistance
• ADO — IFALPA Aircraft Design & Operation Committee
• ALPA — Asociacion de Pilotos de Lineas Aereas
• MAX CRZ — Maximum Engine Thrust for Two-Engine Cruise
• REGIS — Regional Information System
• TACH — Tachometer
• NDB — Non-Directional Beacon
• SAS — Scandinavian Airline Systems
• IGP — Ionospheric Grid Points

• AWOS — Automatic Weather Observing System
• DEMO — Demonstration
• GICB — Ground Initiated Comm B Protocol
• GFM — Government Furnished Materials
• IFATSEA — International Federation of Air Traffic Safety Electronic Associations
• BTC — Basic Training Course
• AVON — AUTOVON Service
• TAWS — terrain awareness and warning system
• BECA — Belgium Cockpit Association
• PPR — Prior Permission Required
• ARSA — Airport Service Radar Area
• EOPF — Electronic Official Personnel File
• CGS — Centimeter-gram-second
• CASS — Corporate Aviation Safety Seminar
• LIH — Light Intensity High
• ITI — Interactive Terminal Interface
• MCSG — Military Committee Staff Group
• BRKHIC — Breaks in Higher Overcast
• ISSM — Information Systems Security Manager
• CHI — Computer-Human Interface
• GDCA — General Directorate for Civil Aviation
• CLT — Calculated Landing Time
• CEECS — Central and Eastern Europe Countries
• VTOL — Vertical Take-Off and Landing aircraft
• SIGMET — Significant Meteorological Information
• ESCO — Executive Support and Coordination Office
• WTC — Wake Turbulence Category
• USOAP — Universal Safety Oversight Audit Program
• LLC — Link Layer Control
• ADSIM — Airfield Delay Simulation Model
• NAILS — National Airspace Integrated Logistics Support
• RTA — Required Time of Arrival
• AJE — En Route & Oceanic Service, Air Traffic Organization
• IVRS — interim voice response system
• CMSA — Carrier Sense Multiple Access
• TA — Traffic Advisory
• CIWS — CORRIDOR INTEGRATED WEATHER SYSTEM
• AFP — Area Forecast Panel
• FO(IFO) — Fuel Oil/Intermediate FO
• ALCC — Airlift Central Co-ordination Centre
• TARMAC — Taxi and Ramp Management and Control
• ADVO — Administrative Voice
• TOPL — Take Off Performance Limits
• ATCS — Air Traffic Control Service
• ALPA — As the Air Line Pilots Association
• ALERT — Alert phase
• CAOFA — Co-ordination of Air Operations in the Forward Area
• ARINC 602A — Test Equipment Guidance
• LDB — Limited Data Block
• MCC — Maintenance Control Center

• RPL — Repetitive Flight Plan
• DCAA — Danish Civil Aviation Administration
• AWPG — Aviation Weather Products Generator
• DLASD — Data Link Application and System Document
• NTAP — Notice to Airman Publication
• ATNP — Aeronautical Telecommunications Network Panel
• GHMI — Ground Human-Machine Interface
• PFAST — Passive Final Approach Spacing Tool
• MDH — Minimum Descent Height
• CMCSG — Civil and Military Co-ordination Sub-Group
• QRA — Who Are You
• AO — Airlines Operator
• IFPPS — Integrated Flight Plan Processing System
• FIRE — Fire Station
• CAI — Contractor-Acceptance Inspection
• CCS7-NI — Communication Channel Signal-7 Network Interconnect
• ARU — Airspace Reservation Unit
• IAIP — Integrated Aeronautical Information Package
• IIE — Integrated Information Environment
• ECVFP — Expanded Charted Visual Flight Procedures
• EFDP — European flight data processing(Eurocontrol)
• RPR — Real Property Report
• FDMA — Frequency Division Multiplex Access
• GFDI — GNSS Fault Detection and Isolation
• CEU — Central Executive Unit
• AIRCOM — Aircraft Communications
• DFL — Daily Flight Log
• PATWAS — Pilot's Automatic Telephone Weather Answering Service
• ASBA — American Shipbrokers Association
• DCCU — Data Communications Control Unit
• AIRSPACE — and Traffic Management
• EFPM — Extended Flight Plan Message
• VSAT — Very Small Aperture Satellite Terminal
• ACL — Air Traffic Control Clearance
• ACTF — Aeronautical Charting Task Force
• ASDE — Area Surveillance Detection Equipment
• GRAF — Ground Replay and Analysis Facility
• ARSA — Airport Radar Serve Area
• HFX — Holding Fix
• AAM — Airbus Asset Management
• HEMS — Helicopter Emergency Medical Services
• MPL — Multi-crew Pilot Licence
• ELR — Extra Long Range
• FDA — Flight Data Analysis
• TDM — Track Definition Message
• ISSCA — Information Systems Security Certification Agent
• MASPS — Minimum Aviation Systems Performance Standards
• D/D — Drift Down
• SVN — Satellite Vehicle Number
• AMIC — Area Manager in Charge

• XM — External Master
• FIP — Facility Improvement Program
• CDR — Coded Departure Routes
• DDB — Dynamic Database Browser
• SDS — Switched Data Service
• ANPP — Air Navigation Plan Publication
• FCLT — Freeze Calculated Landing Time
• AAA — Asian Airliners Association
• RMU — Radio Management Unit
• LACAC — Latin American Civil Aviation Commission
• TKE — TrackAngle Error
• MADAP — Maastricht Automatic Data Processing and Display System
• AWP — Arrival Waypoint
• AISS — Aeronautical Information Server System
• VCR — Visual Control Room
• AIRPAC — Advisor for the Intelligent Resolution of Predicted Aircraft
• ASPA — Asociacian Sindical de Pilots Aviadores de Mexico
• ACE — Central Region
• GGCS — Ground/Ground Communication System
• EFP — Espaсa-France-Portugal Plan
• ACC-TC — ACC Tactical Controller
• AXX — One of the 9 Regional Offices
• EURO RAN — European Regional Air Navigation
• AP — Airport Protection
• C — Celcius
• NB — NorthBound
• ARST — Arresting specify aircraft arresting
• ALR — Alerting message
• DABBS — DITCO Automated Bulletin Board System
• ACA — Austrian Cockpit Association
• ASPP — Aeronautical Fixed Service Systems Planning for Data Interchange Panel
• VSO — Stalling Speed in the Landing Configuration
• LAA — Local Airport Advisory
• DAIR — Direct Altitude and Identity Readout
• HDQ — FAA Headquarters
• EIU — Electronic Interface Unit
• AUTOB — Automatic Weather Reporting System
• CSI — Criticality Safety Index
• CMMC — Common Maintenance Monitoring and Control
• IANC — International Airline Navigators Council
• ADI — Automatic De-Ice and Inhibitor
• FMS — Flight management system
• IFFN — Identification Friend, Foe or Neutral
• FMA — Flight Mode Annunciator
• CRMCS — Central RADNET Monitoring and Control System
• IFPP — Instrument Flight Procedures Panel
• M/SEC — Metres per second
• EUR — Region European Region
• CTAM — Climb to and Maintain
• AFG — Advisory Financial Group

• SUPSIS — Supervisor
• CVFR — Controlled Visual Flight Rules
• AAF — ATM Added Functions
• ANSA — International Advisory Group Air Navigation Services
• GLOC — Gravity-Induced Loss of Consciousness
• IPPC — Internet Pilot Planning Centre
• AOPTF — Aerodrome Operations Task Force
• FGS/C — Flight Guidance System/Computer
• IAPL — IFPS APL Message
• ATIS — Aerodrome Terminal Information Service
• ARINC 569 — Airborne Distance Measuring Equipment
• PTOT — Provisional Take-Off Time
• RDP — Radar Data Processor
• FES — Fixed Earth Station
• ADTN2000 — Administrative Data Transmission Network 2000
• SR&O — System Requirements and Objectives
• BEAM — the greatest width of a ship
• AAG — AIS Automation Group
• GIB — Global Navigation Satellite System Integrity Broadcast
• RE — Resident Engineer
• DPDG — Diplomatic and Protocol Drafting Group
• ARASCNAC — Air traffic services Routes for Aircraft with Self-contained Navigational Capabilities
• CEAC — Committee of European Airspace Co-ordination
• AFC — Airport Facilities Control
• CSS — Central Site System
• AFL — Assigned Flight Level
• TARA — Terminal Area RNAV Applications Task Force
• DEWIZ — Distance Early Warning Identification Zone
• ALA — Alighting Area
• CPDLC — Controller Pilot Datalink Communications
• GAT — General Air Traffic
• PIREPS — electronic pilot reports
• AOWIR — Aircraft Operator What-If Re-routing
• AIPN — Appointing authority
• FIO — Flight Information Office
• X.25 — Packet Switched Data Network
• MBPS — Mega Bits per second
• DDC — Data Display Console
• GNSSP — Global Navigation Satellite System Panel
• WPX — Next waypoint on the flight plan
• HIPERLAN — High Performance Local Area Network
• BRT — Brightness
• MBR — Mittel-Bereich radar
• GDE — Ground Delay Enhancements
• RSA — Runway Safety Area
• AJP — Operations Planning Services, Air Traffic Organization
• SAGA — System Safety Approach for General Aviation
• SARP — Signal Automatic Radar Processing
• RPC — Restoration Priority Code
• HDF — High frequency direction-finding station

• NSE — Navigation System Error
• HELI — Heliport
• FERS — Facility and Equipment Reporting System
• ACN — Airspace Co-ordination Notification
• ATAC — Airspace Traffic Data Capture
• METAR — Meteorological Aerodrome Report
• AES — Airborne Earth Station
• DAAIS — Danger Area Activity Information Service
• EFS — Electronic Flight Strip
• EFPS — External Front Processing System
• AMOSA — Association of Aviation Maintenance Organisations of Southern Africa
• ATFC — Air Traffic Flow Controller
• EBC — Event Based Currency
• SPAS — System Performance Analysis System
• AOCP — Airborne Operational Computer Programme
• IRT — Interrogation Repetition Time
• ETX — End of Transmission
• DER — Departure End of the Runway
• SNOMAC — Syndicat National des Officiers Mecaniciens de l'Aviation Civile
• KECU — Thousands of European Currency Units
• IS-ES — Intermediate System - End System
• FSFO — Flight Standards Field Office
• SNA — Sindicato Nacional dos Aeronautas
• DSUA — Dynamic Special - Use Airspace
• RCP — Radio Control Panel
• ADSP — ADS Processor
• TXWY — Taxy Way
• MKR — Marker Radio Beacon
• DCAA — Dual Call, Automatic Answer Device
• IAPA — Instrument Approach Procedures Automation
• AIR 4653 — Aerospace Information Report 4653
• AWSS — Automated Weather Sensor System
• APLRIM — Association des Pilotes de Lignes de Mauritanie
• HARS — High Altitude Route System
• RATCF — Radar Air Traffic Control Facility
• EHA — European Helicopter Association
• DUAT — Direct User Access Terminal
• CLBR — Calibration
• SAFI — Semi-Automatic Flight Inspection
• NIMS — NAS Infrastructure Management System
• LDR — Labor Distribution Reporting
• ARINC 533A — Airborne HF SSB/AM System
• CEAS — Class E Airspace
• GMCC — General National Airspace System Maintenance Control Center
• PC — Period of Charter