Aviation Abbreviations

Aviation Acronyms and Abbreviations

Specifically written with Pilots in mind…

AA – Acceleration Altitude

A/A – Air to Air

AA – Anti Aircraft

AA – American Airlines

AAIB – Air Accident Investigation Branch

AAL – Above Aerodrome Level

ALPHA – Angle of Attack

AB – Auto Brake

ABP – Able Bodied Passengers

AC – Alternating Current

A/C – Aircraft

ACARS – Aircraft Communication Addressing and Reporting System

ACN – Aircraft Classification Number

ACP – Auto Control Panel

AD – Airworthiness Directive

ADC – Air Data Computer

ADF – Automatic Direction Finder

ADI – Attitude Director Indicator

ADU – Air Data Unit

AFE – Above Field Elevation

AGL – Above Ground Level

AH – Artificial Horizon

AI – Altitude Indication

AIP – Aeronautical Information Publication

ALS – Approach Lighting System

ALT – Altitude

AMSL – Above Mean Sea Level

AoA – Angle of Attack

AOC – Air Operators Certificate

AOG – Aircraft on Ground

AOM – Airport Operating Minima

AP – Auto Pilot

AP – Aeroplane

APP – Approach

APT – Airport

APU – Auxiliary Power Unit

ANC – Aviate Navigate Communicate

ANP – Actual Navigation Performance

AR – Aspect Ratio

ARP – Aerodrome Reference Point

ASDA – Accelerate Stop Distance Available

ASI – Airspeed Indicator

ASL – Above Sea Level

ASR – Airport Surveillance Radar

ASR – Air Safety Report

AT – Auto Throttle

ATA – Air Transport Association

ATC – Air Traffic Control

ATC – Air Training Corps

ATIS – Automatic Terminal Information Service

ATM – Air Traffic Management

ATP – Airline Transport Pilot

ATS – Air Traffic Service

ATPL – Air Transport Pilots Licence

ATZ – Air Traffic Zone

BA – Braking Action

BA – British Airways

BAA – British Airport Authority

BAA – Baltic Aviation Academy

BACF – British Airways Cityflyer

BALPA – British Airline Pilots Association

BT – Backtrack

BCS – Back Course (ILS)

BPR – By-Pass Ratio

BRK – Brookfield

BST – British Summer Time

CA – Critical Area (ILS)

CAA – Civil Aviation Authority

CAE – A flight training organisation (OAA)

CAS – Calibrated Air Speed

CAT – Category (ILS)

CAT – Clear Air Turbulence

CAVOK – Ceiling and Visibility OK

CB – Circuit Breaker

CB – Cumulonimbus

CBT – Computer Based Training

CC – Cabin Crew

CC – Crew Control

CC – Company Council (BALPA Related)

CDA – Continuous Descent Approach

CDFA – Continuous Descent Final Approach

CDI – Course Deviation Indicator

CDU – Control Display Unit

CFI – Chief Flying Instructor

CFIT – Controlled Flight into Terrain

CGI – Chief Ground Instructor

CL – Center Line

CLB – Climb

CMD – Command

CMV – Converted Meteorological Visibility

COBT – Calculated Off Block Time

CoG – Centre of Gravity

CON – Contingency Fuel

CON – Max Continuos Thrust

CP – Chief Pilot / Cadet Program / Cadet Pilot

CP – Critical Point

CPL – Commercial Pilots Licence

CPT – Captain

CRM – Crew Resource Management

CRMI – Crew Resource Management Instructor

CRZ – Cruise

CSM – Cabin Service Manager

CSS – Cabin Service Supervisor

CTC – British Integrated Flight Training Organisation

CTC – Chief Training Captain

CTOT – Calculated Take Off Time

CTR – Control Zone

CTZ – Control Zone

CVR – Cockpit Voice Recorder

CWS – Control Wheel Steering

CX – Checks

DA – Decision Altitude

DALR – Dry Adiabatic Lapse Rate

DC – Direct Current

DEC – Direct Entry Captain

DER – Departure End (of the) Runway

DG – Dangerous Goods

DH – Decision Height

DI – Direction Indicator

DIV – Diversion

DLR – Aptitude Testing Used by Lufthansa

DME – Distance Measuring Equipment

DNF – Did Not Fly

DODAR – Diagnose/Options/Decide/Assign/Review

DOC – Designated Operating Coverage

DOW – Dry Operating Weight

EASA – European Aviation Safety Agency

EAT – Estimated Approach Time

EET – Estimated Elapsed Time

EFB – Electronic Flight Bag

EFIS – Electronic Flight Information System

EGT – Exhaust Gas Temperature

EGPWS – Enhanced Ground Proximity Warning System

EHSI – Electronic Horizontal Situation Indicator

ELT – Emergency Locator Transmitter

EMB – Embraer

EMR – Emergency

EPR – Engine Pressure Ratio

ET – Elapsed Time

ETA – Estimated Time of Arrival

ETOPS – Extended-range Twin-engine Operational Performance Standards

ETOW – Estimated Take Off Weight

ETP – Emergency Turn Procedure

EZFW – Estimated Zero Fuel Weight

EZY – easyJet (ICAO Code)

FA – Flight Attendant

FATPL – Frozen Air Transport Pilots Licence

FAA – Federal Aviation Administration

FADEC – Full Authority Digital Engine Control

FAF – Final Approach Fix

FAP – Final Approach Point

FAR – Fedral Aviation Regulation

FAT – Final Approach Track

FBT – Fixed Based Trainer

FBW – Fly By Wire

FCL – Flight Crew Licensing

FCOM – Flight Crew Operations Manual

FCTM – Flight Crew Training Manual

FD – Flight Director

FDR – Flight Data Recorder

FE – Flight Engineer

FFS – Full Flight Simulator

FI – Flight Instructor

FIR – Flight Information Region

FIS – Flight Information Service

FMC – Flight Management Computer

FMS – Flight Management System

FNPT – Flight & Navigation Procedures Trainer

FO – First Officer

FOM – Fuel of Merit

FOD – Foreign Object Damage

FPA – Flight Path Angle

FPL – Filed Flight Plan

FPM – Feet Per Minute

FPP – Future Flyer Programme

FPT – Flat Panel Trainer

FR – Ryanair (IATA Code)

FREQ – Frequency

FT – Flight Training

FTE – Flight Training Europe, Jerez

FTO – Flight Training Organisation

G – G-force

GA – General Aviation

G/A – Go Around

GAPAN – The Guild of Air Pilots & Air Navigators

GC – Great Circle

GE – General Electric

GENDEC – General Decleration

GH – General Handling

GI – Ground Instructor

GND – Ground

GNSS – Global Navigation Satellite System

GP – Glide Path

GP – Guidance Panel

GPA – Glide Path Angle

GPS – Global Positioning System

GPWS – Ground Proximity Warning System

GS – Ground School

GS – Ground Speed

GS – Glide Slope

HDG – Heading

HEA – High Energy Approach

HF – Human Factors

HF – High Frequency

HIALS – High Intensity Approach Lighting System

HIL – Hold Item List

HoT – Head of Training

HOT – Hold Over Time (Anti-icing)

HPA – Hectopascal

HP – Horse Power

HP – High Pressure

HPT – High Pressure Turbine

HSI – Horizontal Situation Indicator

HST – Hypersonic Transport

HUD – Head Up Display

HWC – Head Wing Component

HYD – Hydraulics

IAA – Irish Aviation Authority

IAC – Instrument Approach Chart

IAP – Instrument Approach Procedure

IAF – Initial Approach Fix

IALPA – Irish Airline Pilots Association

IAP – Instrument Approach Procedure

IAS – Indicated Air Speed

IATA – International Air Transport Association

ICAO – International Civil Aviation Organisation

IDG – Integrated Drive Generator

IFR – Instrument Flight Rules

ILS – Instrument Landing System

IMC – Instrument Meteorological Conditions

INOP – Inoperative

INS – Inertial Navigation System

IR – Instrument Rating

IRS – Inertial Reference System

IRST – Instrument Rating Skills Test

IRU – Inertial Reference Unit

ISA – International Standard Atmosphere

ITCZ – Intertropical Convergence Zone

JAA – Joint Aviation Authorities

JAR – Joint Aviation Requirements

JFO – Junior First Officer

JOC – Jet Orientation Course

JS – Jump Seat

kHz – Kilohertz

KIAS – Knots Indicated Airspeed

KM – Kilometres

KPH – Kilometres per hour

KTS – Knots

LCC – Low Cost Carrier/s

LCK – Line Check

LCTR – Locator

LD – Landing Distance

LDA – Landing Distance Available

LDA – Low Drag Approach

LDR – Landing Distance Required

LG – Landing Gear

LHO – Live Human Organs

LHR – London Heathrow

LLZ – Localiser

LOC – Localiser

LOE – Line Orientated Exercise

LOFT – Line Oriented Flight Training

LORAN – Long Range Navigation

LNAV – Lateral Navigation

LP – Low Pressure

LPC – Line Proficiency Check

LRU – Line Replaceable Unit

LSK – Line Select Key

LSS – Local Speed of Sound

LST – Line Skills Test

LT – Line Training

LT – Local Time

LTC – Line Training Captain

LTP – Landing Threshold Point

LVL – Level

LVP – Low Visibility Procedures

LW – Landing Weight

MAA – Military Aviation Authority

MAA – Missed Approach Altitude

MAC – Mean Aerodyanamic Chord

MACG – Missed Approach Climb Gradient

MAP – Missed Approach Point

MATZ – Military Air Traffic Zone

MCC – Multi Crew Cooperation Course

MCP – Mode Control Panel

MCRIT – Critical Mach Number

MCT – Maximum Continuous Thrust

MDA – Minimum Decent Altitude

MDH – Minimum Decent Height

ME – Multi Engine

MEA – Minimum Enroute Altitude

MEL – Minimum Equipment List

MMEL – Master Minimum Equipment List

MEP – Multi Engine Piston

MET – Meteorological

METAR – Meteorological Aerodrome Report

MFRA – Minimum Flap Retraction Altitude

MLM – Maximum Landing Mass

MLS – Microwave Landing System

MLW – Maximum Landing Weight

MM – Middle Marker

MMO – Maximum Mach Number

MOC – Minimum Obstacle Clearance

MOR – Mandatory Occurance Report

MORA – Minimum En-route Altitude

MPA – Multi Pilot Aircraft

MPL – Multi-Crew Pilots Licence

MPS – Meters Per Second

MRW – Maximum Ramp Weight

MSA – Minimum Sector/Safe Altitude

MSL – Mean Sea Level

MTOW – Maximum Take Off Weight

MZFW – Maximum Zero Fuel Weight

N1 – Low Pressure Compressor Speed

N2 – High Pressure Compressor Speed

NADP – Noise Abatement Departure Procedure (1 or 2)

NATS – National Air Traffic Service

NAV – Navigation

ND – Navigation Display

NDB – Non Directional Beacon

NG – Next Generation

Nigel – A British Airways Pilot (Slang)

NM – Nautical Mile

No1 – Number One (Senior Cabin Crew Member)

NOTAM – Notice to Airmen

NOTECH – Non Technical Skills

NPA – Non Precision Approach

NPPL – National Private Pilots Licence

NSC – No Significant Cloud

NTS – Non Technical Skills

NTSB – National Transportation Safety Board

NWS – Nose Wheel Steering

OAA – Oxford Aviation Academy (UK Integrated School)

OAT – Outside Air Temperature

OB – Off/On Blocks

OBS – Omni Bearing Selector

OC – Operations Control

OCA – Obstacle Clearance Altitude

OCC – Operators Conversion Course

OCH – Obstacle Clearance Height

OEA – One Engine Approach

OEI – One Engine Inoperative

OEM – Original Equipment Manufacturer

OFP – Operational Flight Plan

OM – Operations Manual

OM – Outer Marker

OPC – Operator Proficiency Check

OTP – On Time Performance

OTS – Out of Service

QTY – Quantity

OW – Operational Weight

OXY – Oxygen

O2 – Oxygen

PA – Public/Passenger Announcement

Packs – Air Conditioning Units

PANS-OPS – Procedures for Air Navigation Services

PAPI – Precision Approach Path Indicator

PAR – Precision Approach Radar

PAX – Passenger/s

PCN – Pavement Classification Number

PET – Point Of Equal Time

PF – Pilot Flying

PFD – Primary Flight Display

PFL – Practice Forced Landing

PIC – Pilot in Command

PICUS – Pilot in Command Under Supervision

PIO – Pilot Induced Oscillations

PIREP – Pilot Report

PoB – Passengers on Board

PoF – Principles of Flight

POH – Pilot’s Operating Handbook

PM – Pilot Monitoring

PNF – Pilot Not Flying

PNR – Point of No Return

PPL – Private Pilots Licence

PPR – Prior Permission Required

PRNAV – Precision Area Navigation

PSI – Pressure per square inch

PSR – Point of safe return

PSR – Purser (No 1 Cabin Crew)
PT – Progress Test

PTT – Push to Talk

PUT – Pilot Under Training

QDM – Magnetic heading to a station

QDR – Magnetic Bearing from a station

QFE – Field Elevation (Pressure Setting)

QNH – Regional Pressure Setting

QRA – Quick Reaction Alert

QRH – Quick Reference Handbook

RA – Radio Altimeter

RA – Radio Altitude

RA – Resolution Advisory

RADAR – Radio Detection and Ranging

RAF – Royal Air Force

RAS – Rectified Airspeed

RAT – Ram Air Turbine

REL – Runway Edge Lights

RESA – Runway End Safety Area

RET – Rapid Exit Taxiway

RMI – Radio Magnetic Indicator

RN – Royal Navy

RNAV – Area Navigation

RNP – Required Navigation Performance

RPL – Repetitive Flight Plan

RT – Radio Telephony

RTO – Rejected Take Off

RTS – Return to Stand

RYR – Ryanair (ICAO Code)

RVR – Runway Visual Range

RVSM – Reduced Vertical Separation Minima

RW – Runway

RWY – Runway

SADLR – Saturated Adiabatic Lapse Rate

SAR – Search and Rescue

SAT – Saturated Air Temperature

SCCM – Senior Cabin Crew Member

SE – Single Engine

SELCAL – Selective Calling

SEP – Single Engine Piston

SEP – Safety and Emergency Procedures

SFI – Synthetic Flight Instructor

SFO – Senior First Officer

SHF – Super High Frequency

SIC – Second In Command

SID – Standard Instrument Departure

SIGMET – Significant meteorological advisory

SLF – Self Loading Freight (Passengers)

SLP – Speed Limit Point

SM – Statute Mile

SMR – Surface Movement Radar

S/O – Second Officer

SOP’s – Standard Operating Procedures

SOS – Save our Souls (Distress call)

SPIC – Student Pilot In Command

SR – Sunrise

SRA – Surveillance Radar Approach

SS – Sunset

SSR – Secondary Surveillance Radar

SST – Supersonic Transport

STA – Scheduled Time of Arrival

STAR – Standard Terminal Arrival Route

STD – Scheduled Time of Departure

STD – Standard (Pressure Setting 1013mb)

TA – Transition Altitude

TA – Traffic Advisory

TAA – Terminal Arrival Area

TACAN – Tactical Air Navigation

TAF – Terminal Area Forecast

TAF – Aerodrome Forecast

TAS – True Airspeed

TAT – Total Air Temperature

TCA – Terminal Control Area

TCAS – Traffic Collision Avoidance System

TCH – Threshold Crossing Height

TDZ – Touch Down Zone

TECH – Technical

TEM – Threat and Error Management

TERPS – Terminal Procedures

TFC – Traffic

THOB – Total Heads On Board

THLD – Threshold

THLD – Thrust Hold

THR – Threshold

TKI – Theoretical Knowledge Instructor

TL – Transition Level

TLA – Thrust Lever Angle

TMA – Terminal Manoeuvring Area

T/O – Take Off

TO/GA – Take Off Go Around

TOC – Take Off Configuration

TOC – Top Of Climb

TOD – Top Of Descent

TODA – Take Off Distance Available

TORA – Take Off Run Available

TOW – Take Off Weight

TP – Turbo Prop

TR – Type Rating

TRE – Type Rating Examiner

TRI – Type Rating Instructor

TRTO – Type Rating Training Organisation

TRU – Transformer Rectifier Unit

TS – Thunderstorm

TT – Total Time

TTL – Total

TWC – Tail Wind Component

TWR – Tower

TWY – Taxiway

UA – Unusual Attitude

UAS – University Air Squadron

UAV – Unmanned Air Vehicles

UFO – Unidentified Flying Object

UHF – Ultra High Frequency

UIR – Upper Flight Information Region

U/S – Unserviceable

USAF – United States Air Force

UTC – Universal Co-ordinated Time (Zulu)

VA – Virgin Atlantic

VAAC – Volcanic Ash Advisory Center

VAC – Volcanic Approach Chart

VASI – Vertical Approach Slope Indicator

VFE – Maximum Flap Extension Speed

VFR – Visual Flight Rules

VHF – Very High Frequency

VIP – Very Important Person

VIMD – Maximum Drag Speed

VLE – Maximum Landing Gear Extended Speed

VMC – Visual Meteorological Conditions

VMCA – Minimum Control Speed Airborne

VMCG – Minimum Control Speed Ground

VMO – Maximum Indicated Airspeed

VNAV – Vertical Navigation

VNE – Never Exceed Speed

VNO – Normal Operating Speed

VOLMET – Meterlogical Information In Flight

VOR – VHF Omni Directional Radio Range

VR – Rotate

VRB – Variable

VS – Vertical Speed

VSI – Vertical Speed Indicator

VTOL – Vertical Take Off and Landing

VIP – Very Important Person

VV – Vertical Visability

VVIP – Very Very Important Person

VX – Best Angle of Climb Speed

VY – Best Rate of Climb Speed

WILCO – Will Comply

WIP – Work In Progress

WOCL – Window of Circadian Low

WPT – Way Point

WX – Weather

XPDR – Transponder

XWC – Cross Wind Component

Z – Zulu Time (Same as UTC and GMT)

ZFT – Zero Flight Time

ZFW – Zero Fuel Weight