Contextual Model Abbreviations
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| Abbreviation | Term |
|---|---|
| A-SMGCS | Advanced Surface Movement Guidance and Control System |
| WINTEM | Wind and temperature information |
| WGS84 | World Geodetic System - 1984 |
| WGS | World Geodetic System |
| Wb | Weber |
| WAFC | World area forecast centre |
| WAAS | Wide area augmentation system |
| W | Watt |
| VOR | VHF omnidirectional radio range |
| Voice-ATIS | Voice Automatic Terminal Information Service |
| VNAV | Vertical Navigation |
| VMC | Visual meteorological conditions |
| VIP | Very important person |
| VHF | Very high frequency |
| VGSI | Visual Glide Slope Indicator |
| VFR | Visual flight rules |
| VASIS | Visual approach slope indicator systems |
| VAAC | Volcanic Ash Advisory Centre |
| V | Volt |
| UTC | Coordinated Universal Time |
| UIR | Upper flight information region |
| UHF | Ultra high frequency [300 to 3 000 MHz] |
| UAV | Unmanned Aerial Vehicle |
| UAS | Unmanned Aircraft System |
| UAC | Upper area control centre |
| TWR | Aerodrome control tower or aerodrome control |
| TSAT | Target Start Up Approval Time |
| TS | Traffic Synchronisation |
| TREND | Trend forecast |
| TRA | Temporary Reserved Airspace |
| TR | Track |
| TORA | Take-off run available |
| TODAH | Take-off distance available (for helicopters) |
| TODA | Take-off distance available |
| TOD | Top of Descent |
| TOC | Top of Climb |
| TOBT | Target off-block time |
| TMA | Terminal control area |
| TLOF | Touchdown and lift-off area |
| TCAC | Tropical Cyclone Advisory Centre |
| TAS | True airspeed |
| TAR | Terminal Airspace Radar |
| TAF | Terminal Aerodrome Forecast |
| TACAN | UHF tactical air navigation aid |
| TAA | Terminal Arrival Altitude |
| T | Tesla |
| t | Tonne |
| Sv | Sievert |
| SUP | Supplement (AIP Supplement) |
| STAR | Standard instrument arrival |
| STA | Straight-in Approach |
| SSR | Secondary surveillance radar |
| SRE | Surveillance radar element of precision |
| SPECI | Aerodrome special meteorological report (in meteorological code) |
| SNOCLO | Aerodrome closed due to snow (used in METAR/SPECI) |
| SLA | Seaplane Landing Area |
| SIGMET | Information concerning en-route weather phenomena which may affect the safety of aircraft operations |
| SID | Standard instrument departure |
| SHF | Super high frequency [3 000 to 30 000 MHz] |
| SELCAL | Selective Calling System |
| SEL | Sound Exposure Level |
| SDF | (i) Step down fix (ii) Simplified Directional Facility |
| SBAS | Satellite-based augmentation system |
| SAR | Search and Rescue |
| S | Siemens |
| RVSM | Reduced Vertical Separation Minimum |
| RVR | Runway visual range |
| RTODAH | Rejected take-off distance available (for helicopters) |
| RSA | Runway safety area |
| RPL | Repetitive flight plan |
| RNP | Required Navigation Performance |
| RNAV | Area navigation |
| RIF | Reclearance in flight |
| RESA | Runway end safety area |
| RCP | Required Communications Performance |
| RA | Resolution Advisory |
| QNH | Altimeter sub-scale setting to obtain elevation when on the ground |
| QFE | Atmospheric pressure at aerodrome elevation (or at runway threshold) |
| PSR | Primary surveillance radar |
| PRP | Point-in-space reference point |
| PIREP | Pilot Report |
| PIB | Pre-flight information bulletin |
| PBN | Performance Based Navigation |
| PAX | Passenger(s) |
| PAR | Precision Approach Radar |
| PAPI | Precision approach path indicator |
| PANS | Procedures for air navigation services |
| PA | Precision Approach |
| OPMET | Operational meteorological (information) |
| OLDI | On-line data interchange |
| OFZ | Obstacle free zone |
| OFIS | Operational Flight Information Service |
| OCH | Obstacle Clearance Height |
| OCA | Obstacle Clearance Altitude |
| OBST | Obstacle |
| O | Ohm |
| NTZ | No transgression zone |
| NPA | Non-precision approach |
| NOZ | Normal operating zone |
| NOTAM | Notice to Airmen |
| NOF | International NOTAM Office |
| NM | Nautical miles |
| NDB | Non-directional radio beacon |
| NAV | Navigation |
| NAT | North Atlantic |
| N | Newton |
| MWO | Meteorological Watch Office |
| MSSR | Monopulse secondary surveillance radar |
| MSL | Mean sea level |
| MSA | Minimum Sector Altitude |
| MPS | Metres per second |
| MOPS | Minimum Operational Performance Standards |
| MOCA | Minimum obstacle clearance altitude |
| MNPS | Minimum navigation performance specifications |
| MNM | Minimum |
| MMS | Mission Management System |
| MLS | Microwave landing system |
| MKR | Marker Radio Beacon |
| MHZ | Megahertz |
| METAR | Aviation routine weather report (in aeronautical meteorological code) |
| MET REPORT | Local routine meteorological report (in abbreviated plain language) |
| MET | Meteorological or meteorology |
| MEA | Minimum en-route altitude |
| MDH | Minimum descent height |
| MDCRS | Meteorological Data Collection and Reporting System |
| MDA | Minimum descent altitude |
| MAX | Maximum |
| MAPT | Missed approach point |
| MAHF | Missed approach holding fix |
| m | Metre |
| LVP | Low Visibility Procedures |
| LVL | Level |
| LTP | Landing threshold point |
| LPV | Localizer Precision approach with Vertical guidance |
| LORAN | long range air navigation system |
| lm | Lumen |
| LLWS | Low Level Wind Shear |
| LDAH | Landing distance available (for helicopters) |
| LDA | Landing Distance Available |
| L | Litre |
| KW | Kilowatts |
| KT | Knot |
| KMH | Kilometres per hour |
| KM | Kilometres |
| KHZ | Kilohertz |
| KG | Kilogram |
| K | Kelvin |
| J | Joule |
| IMC | Instrument meteorological conditions |
| ILS | Instrument landing system |
| IFR | Instrument flight rules |
| IFPS | Integrated Initial Flight Plan Processing System |
| IF | Intermediate Approach Fix |
| ID | Identifier or identify |
| ICAO | International Civil Aviation Organization |
| IATA | International Air Transport Association |
| IAS | Indicated airspeed |
| IAP | Instrument Approach Procedure |
| IAF | Initial Approach Fix |
| HZ | Hertz (cycle per second) |
| HGT | Height or height above |
| HAPI | Helicopter approach path indicator |
| H | Henry |
| H | Orthometric Height |
| GUFI | Globally Unique Flight Identifier |
| GRIB | Processed meteorological data in the form of grid point values expressed in binary form (aeronautical meteorological code) |
| GPS | Global positioning system |
| GNSS | Global navigation satellite system |
| GLONASS | Global orbiting navigation satellite system |
| GBAS | Ground-Based Augmentation System |
| GARP | GBAS azimuth reference point |
| GANIS | Global Air Navigation Industry Symposium |
| GA | General Aviation |
| FTP | Fictitious threshold point |
| ft | Feet (dimensional unit) |
| FPL | Filed Flight Plan |
| FPAP | Flight path alignment point |
| FMS | Flight management system |
| FMP | Flow Management Position |
| FIS | Flight information service |
| FIR | Flight information region |
| FIC | Flight Information Centre |
| FF-ICE | Flight and Flow Information for a Collaborative Environment |
| FDPS | Flight data processing system |
| FATO | Final approach and take-off area |
| FANS | Future Air Navigation System |
| FAF | Final approach fix |
| FAC | Facilities |
| F | Farad |
| ETOT | Estimated Take-Off Time |
| ETO | Estimated time over e.g. significant point |
| ETD | Estimated time of departure or estimating departure |
| ETA | Estimated time of arrival or estimating arrival |
| EPR | Engine pressure ratio |
| EOBT | Estimated off-block time |
| ELT | Emergency Locator Transmitter |
| ELEV | Elevation |
| ELDT | Estimated Landing Time |
| EIBT | Estimated In-Block Time |
| EET | Estimated Elapsed Time |
| eAIP | Electronic AIP |
| DVOR | Doppler VOR |
| DSLT | Airport Departure Slot |
| DME | Distance measuring equipment |
| DLIC | Data link initiation capability |
| DIC | Diplomatic Clearance |
| DH | Decision Height |
| DCT | Direct (in relation to flight-plan clearances and type of approach) |
| DCP | Datum Crossing Point |
| DA | Decision Altitude |
| D-ATIS | Data link automatic terminal information service |
| CTA | Control Area |
| CPL | Current flight plan (message type designator) |
| CPDLC | Controller-pilot data link communications |
| COP | Change-over point |
| COM | Communications |
| CNS | Communications, navigation and surveillance |
| CFMU | Central Flow Management Unit |
| CDTI | Cockpit Display of Traffic Information |
| CDO | Continuous Descent Operations (defined by ICAO) |
| CDL | Configuration Deviation List |
| cd | Candela |
| CAVOK | Visibility, cloud and present weather better than prescribed values or conditions (Ceiling and visibility OK). |
| CAT | Category |
| CAS | Calibrated Airspeed |
| C | Coulomb |
| C | Degrees Celsius (Centigrade) |
| Bq | Becquerel |
| AWY | Airway |
| AW | Aerial Work |
| ATZ | Aerodrome Traffic Zone |
| ATSU | ATS unit |
| ATS | Air traffic services |
| ATN | Aeronautical Telecommunications Network |
| ATM | Air traffic management |
| ATIS | Automatic terminal information service |
| ATFM | Air traffic flow management |
| ATCO | Air traffic controller |
| ATC | Air traffic control (in general) |
| ASM | Airspace Management |
| ASLT | Airport Arrival Slot |
| ASDA | Accelerate-stop distance available |
| ASBU | Aviation Service Block Upgrade (ICAO) |
| ARP | Aerodrome Reference Point |
| APV | Approach procedure with vertical guidance |
| APP | Approach Control |
| AOC | Air Operator Certificate |
| ANSP | Air Navigation Services Provider |
| AMSL | Above mean sea level |
| AMS | Aeronautical Mobile Services |
| AMDT | Amendment (AIP Amendment) |
| ALT | Altitude |
| AIXM | Aeronautical Information Exchange Model |
| AIS | Aeronautical information services |
| AIRMET | Information concerning en-route weather phenomena which may affect the safety of low-level aircraft operations |
| AIREP | Air-report |
| AIRAC | Aeronautical information regulation and control |
| AIP | Aeronautical information publication |
| AIC | Aeronautical information circular |
| AGL | Above ground level |
| AFTN | Aeronautical fixed telecommunication network |
| AFIS | Aerodrome Flight Information Service |
| AFIL | Flight plan filed in the air |
| ADS-C | Automatic Dependant Surveillance - Contract |
| ADS-B | Automatic Dependant Surveillance - Broadcast |
| ADS | Automatic dependent surveillance |
| ADES | Aerodrome of Destination |
| ADEP | Aerodrome of Departure |
| ACK | Acknowledge |
| ACC | Area control center or area control |
| ACAS | Airborne collision avoidance system |
| ACARS | Aircraft communication addressing and reporting system |