A - C
| Abbreviation | Meaning |
|---|---|
| aal | Above aerodrome level |
| ac | Aircraft |
| ACAS | Airborne Collision Avoidance System |
| ACC | Area Control Centre |
| ACN | Airspace Co-ordination Notice |
| A/D | Aerodrome |
| ADC | Aerodrome Control(ler) |
| ADF | Automatic Direction Finding Equipment |
| ADR | Advisory Route |
| AEF | Air Experience Flight |
| AEW | Airborne Early Warning |
| AFIS(O) | Aerodrome Flight Information Services (Officer) |
| agl | Above Ground Level |
| AIAA | Area of Intense Aerial Activity |
| AIC | Aeronautical Information Circular |
| AIP | Aeronautical Information Publication |
| AIS | Aeronautical Information Services |
| alt | Altitude |
| amsl | Above mean sea level |
| AOB | Angle of bank |
| A/P | Autopilot |
| APP | Approach Control(ler) |
| APR | Approach Radar Control(ler) |
| ARP | Aerodrome Reference Point |
| ASR | Airfield Surveillance Radar |
| ATC | Air Traffic Control |
| ATCC | Air Traffic Control Centre |
| ATCO | Air Traffic Control Officer |
| ATCRU | Air Traffic Control Radar Unit |
| ATIS | Automatic Terminal Information Service |
| ATM | Aerodrome Traffic Monitor |
| ATS (U) | Air Traffic Service (Unit) |
| ATSA | Air Traffic Service Assistant |
| ATSOCAS | ATSs Outside Controlled Airspace |
| ATSI | Air Traffic Services Investigations |
| ATZ | Aerodrome Traffic Zone |
| AWACS | Airborne Warning and Control System |
| AWR | Air Weapons Range |
| BGA | British Gliding Association |
| BHAB | British Helicopter Advisory Board |
| BHPA | British Hang Gliding and Paragliding Association |
| BINA ERS | British Isles/N Atlantic En Route Supplement |
| BMAA | British Microlight Aircraft Association |
| c | cira |
| CAA | Civil Aviation Authority |
| CANP | Civil Air Notification Procedure |
| CAS | Controlled Airspace |
| CAT | Clear Air Turbulence |
| CAVOK | Visibility, cloud and present weather better than prescribed values or conditions |
| Cct | Circuit |
| CFI | Chief Flying Instructor |
| CinC Fleet | Commander in Chief Fleet, Royal Navy |
| CLAC | Clear Above Cloud |
| CLAH | Clear Above Haze |
| CLBC | Clear Below Cloud |
| CLBL | Clear Between Layers |
| CLOC | Clear of Cloud |
| CMATZ | Combined MATZ |
| CPA | Closest Point of Approach |
| C/S | Callsign |
| CTA | Control Area |
| CTR/CTZ | Control Zone |
| CWS | Collision Warning System |
D - H
| Abbreviation | Meaning |
|---|---|
| DA | Decision Altitude |
| DAAvn | Director Army Aviation |
| DAP | Downlinked Ac Parameters [Mode S] |
| DAP | Directorate of Airspace Policy CAA |
| D & D | Distress & Diversion Cell |
| DF | Direction Finding (Finder) |
| DH | Decision Height |
| DME | Distance Measuring Equipment |
| DUA | Dedicated User Area |
| E | East |
| EAT | Expect Approach Time |
| elev | Elevation |
| ERS | En Route Supplement |
| est | estimated |
| FAT | Final Approach Track |
| FIR | Flight Information Region |
| FIS | Flight Information Service |
| FISO | Flight Information Service Officer |
| FMS | Flight Management System |
| FO | First Officer |
| fpm | Feet Per Minute |
| fps | Flight Progress Strip |
| GAT | General Air Traffic |
| GCA | Ground Controlled Approach |
| GCI | Ground Controlled Interception |
| GMC | Ground Movement Controller |
| GP | Glide Path |
| GS | Groundspeed |
| H | Horizontal |
| HISL | High Intensity Strobe Light |
| HLS | Helicopter Landing Site |
| HMR | Helicopter Main Route |
| HPZ | Helicopter Protected Zone |
| HQ Air | HQ Air Command |
| HUD | Head Up Display |
I - P
| Abbreviation | Meaning |
|---|---|
| IAS | Indicated Air Speed |
| iaw | In accordance with |
| ICF | Initial Contact Frequency |
| IFF | Identification Friend or Foe |
| IFR | Instrument Flight Rules |
| ILS | Instrument Landing System |
| IMC | Instrument Meteorological Conditions |
| JOI | Joint Operating Instruction |
| JSP | Joint Services Publication |
| KHz | Kilohertz |
| kt | Knots |
| km | Kilometres |
| L | Left |
| LACC | London Area Control Centre (Swanwick) |
| LARS | Lower Airspace Radar Service |
| LATCC(Mil) | London Air Traffic Control Centre (Military) |
| LFA | Low Flying Area |
| LFC | Low Flying Chart |
| LH | Left hand |
| LLZ | Localizer |
| LJAO | London Joint Area Organisation (Swanwick (MIL)) |
| LoA | Letter of Agreement |
| LTMA | London TMA |
| MACC | Manchester Area Control Centre |
| MATS | Manual of Air Traffic Services |
| MATZ | Military Aerodrome Traffic Zone |
| mb | Millibars |
| MHz | Megahertz |
| MOD | Ministry of Defence |
| MRSA | Mandatory Radar Service Area |
| MSD | Minimum Separation Distance |
| N | North |
| NATS | National Air Traffic Services |
| NDB | Non - Directional Beacon |
| nm | Nautical Miles |
| NMC | No Mode C |
| NK | Not Known |
| NR | Not Recorded |
| NVG | Night Vision Goggles |
| OAC | Oceanic Area Control |
| OACC | Oceanic Area Control Centre |
| OAT | Operational Air Traffic |
| O/H | Overhead |
| OJTI | On-the-Job Training Instructor |
| OLDI | On-Line Data Interchange |
| PAR | Precision Approach Radar |
| PFL | Practice Forced Landing |
| PF | Pilot Flying |
| PI | Practice Interception |
| PINS | Pipeline Inspector Notification System |
| PNF | Pilot Non-flying |
Q - Z
| Abbreviation | Meaning |
|---|---|
| QDM | Magnetic heading (zero wind) |
| QFE | Atmospheric pressure at aerodrome/airport elevation (or at runway threshold) |
| QFI | Qualified Flying Instructor |
| QHI | Qualified Helicopter Instructor |
| QNH | Altimeter sub - scale setting to obtain elevation when on the ground |
| R | Right |
| RA | Resolution Advisory (TCAS) |
| RAS | Radar Advisory Service |
| RAT | Restricted Area (Temporary) |
| RCO | Range Control Officer |
| RH | Right hand |
| RIS | Radar Information Service |
| ROC | Rate of Climb |
| ROD | Rate of Descent |
| RPS | Regional Pressure Setting |
| RT | Radio Telephony |
| RTB | Return to base |
| RVSM | Reduced Vertical Separation Minimum |
| RW | Runway |
| RVR | Runway Visual Range |
| S | South |
| SAP | Simulated Attack Profile |
| SAS | Standard Altimeter Setting |
| SC | Sector Controller |
| ScATCC (Mil) | Scottish Air Traffic Control Centre (Military) (Prestwick) |
| ScOACC | Scottish and Oceanic Area Control Centre (Prestwick) |
| SFL | Selected Flight Level [Mode S DAP] |
| SID | Standard Instrument Departure |
| SMF | Separation Monitoring Function |
| SOP | Standard Operating Procedures |
| SRA | Surveillance Radar Approach |
| SRE | Surveillance Radar Element of precision approach radar system |
| SSR | Secondary Surveillance Radar |
| STAR | Standard Instrument Arrival Route |
| STCA | Short Term Conflict Alert |
| SVFR | Special VFR |
| TA | Traffic Advisory (TCAS) |
| TAS | True Air Speed |
| TBC | Tactical Booking Cell |
| TC | Terminal Control |
| TCAS | Traffic Alert & Collision Avoidance System |
| TRA | Temporary Restricted Area |
| TFR | Terrain Following Radar |
| TI | Traffic Information |
| TMA | Terminal Control Area |
| TRUCE | Training in Unusual Circumstances and Emergencies |
| UAR | Upper Air Route |
| UHF | Ultra High Frequency |
| UIR | Upper Flight Information Region |
| UKDLFS | United Kingdom Day Low Flying System |
| UKNLFS | United Kingdom Night Low Flying System |
| UNL | Unlimited |
| USAF(E) | United States Airforce (Europe) |
| UT | Under Training |
| UTA | Upper Control Area |
| UTC | Coordinated Universal Time |
| V | Vertical |
| VCR | Visual Control Room |
| VDF | Very High Frequency Direction Finder |
| VFR | Visual Flight Rules |
| VHF | Very High Frequency |
| VMC | Visual Meteorological Conditions |
| VOR | Very High Frequency Omni Range |
| VRP | Visual Reference Point |
| W | West |