Abbreviations

A/C

Aircraft

ACFT

Aircraft

AAIB

UK Air Accidents Investigation Branch

AAIM

Aircraft Autonomous Integrity Monitoring

ABAS

Aircraft Based Augmentation Systems

AC

Alternating Current

ACAS

Airborne Collision Avoidance System

ACMI

Aircraft, Crew, Maintenance, Insurance

AD

Airworthiness Directive

ADD

Allowable Deferred Defect

ADF

Automatic Direction Finder

ADS-B

Automatic Dependent Surveillance — Broadcast

ADS-C

Automatic Dependent Surveillance — Contract

AED

Automatic External Defibrillator

AFIS

Airborne Flight Information System

AFM

Airplane Flight Manual

AGB

Accessory Gearbox

AGL

Above Ground Level

AIL

Aileron

AIRAC

Aeronautic Information Regulation and Control

AFM

Aircraft Flight Manual

AFTN

Aeronautical Fixed Telecommunications Network

AGL

Above Ground Level

AIC

Aeronautical Information Circular

AIP

Aeronautical Information Publication

AIS

Aeronautical Information Service

ALI

Airworthiness Limitation Item

ALoSP

Acceptable Level of Safety Performance

ALT

Alternate/Altitude

AMC

ATC Microphone Check

AMC

Acceptable Means of Compliance

AMM

Aircraft Maintenance Manual

AMO

Approved Maintenance Organization

AMOC

Alternate Means Of Compliance

AMP

Approved Maintenance Programme

AMSL

Above Mean Sea Level

ANO

Air Navigation Order

ANS

Air Navigation Services

ANSPs

Air Navigation Service Providers

AOA

Angle of Attack

AOC

Air Operator's Certificate/ Aeronautical Operational Control

AOG

Aircraft on Ground

AOM

Aerodrome Operating Minima/ Aircraft Operating Manual

AOMM

Aircraft Outfitting Maintenance Manual

AP or A/P

Autopilot

APM

Airplane Personnality Module 

APP

Approach

APU

Auxiliary Power Unit

APV

Approach (Procedure) with Vertical Guidance

ARC

Airworthiness Review Certificate

ARP

Airport (or Aerodrome) Reference Point

ASC

Aircraft Service Change

ASCB

Avionics Standard Communication Bus

A/T

Auththrottle

ATA

Air Transport Association

ATC

Air Traffic Control

ATCO

Air Traffic Controllers

ATM

Air Traffic Management

ATN B1

Aeronautical Telecommunications Network Baseline 1

ATSU

Air Traffic Services Unit

ATS

Air Traffic Service

ATZ

Aerodrome Traffic Zone

AUTO

Automatic

AUX

Auxiliary

AWOPS

All Weather Operations

AWS

Airworthiness Surveyor

AWSc

Airworthiness Section

BATT

Battery

BITE

Built-In Test Equipment

BLD

Bleed

BoM

Bill of Material

BoS

Bill of Sale

BTB

Back to Birth

BTMS

Brakes Temperature Monitoring System

BRNAV

Basic Area Navigation

CAME

Continuous Airworthiness Management Exposition

CAMO

Continuous Airworthiness Management Organization

CAP

UK CAA Civil Aviation Publication

CAS

Crew Alerting System

CB

Circuit Breaker

CBT

Computer Based Training

CCD

Cursor Control Device

CDCCL

Critical Design Configuration Control Limitations

CDI

Course Deviation Indicator

CDL

Configuration Deviation List

CDU

Control Display Unit

CFIT

Controlled Flight Into Terrain

CG

Centre of Gravity

CKPT

Cockpit

CM

Context Management

CMA

Continuous Monitoring Approach

CMC

Control Maintenance Computer

CMF

Communications Management Function

CMM

Component Maintenance Manual

CNL

Cancelled

CoA

Certificate of Airworthiness

COMM

Communication(s)

CONT

Control

CoR

Certificate of Registration

COTS

Commercial-Off-The-Shelf

CP

Conditions Precedent

CPAM

Cabin Pressure Acquisition Module

CPCP

Corrosion Prevention and Corrosion Protection

CPCS

Cabin Pressure Controller System

CPDLC

Controller–Pilot Data Link Communications

CPT

Captain

CRM

Cockpit Resource Management

CRS

Certificate of Release to Service

CSN

Cycles Since New

CSP

Communications Service Provider

CSO

Cycles Since Overhaul

CSSV

Cycles Since Shop Visit

CTA

Control Area

CTR

Control Zone

CVR

Cockpit Voice Recorder

DA

Decision Altitude

D&B

Dent and Buckle Chart

DAU

Data Acquisition Unit

Dc

Direct Current

DCPC

Direct Controller-Pilot Communications

DISP

Display

DGR

Dangerous Goods Regulations

DH

Decision Height

DME

Distance Measuring Equipment

DOA

Design Organization Approval

DOW

Dry Operational Weight

DSP

Datalink Service Provider

DU

Display Unit

EAD

Emergency Airworthiness Directive

 EASA

European Aviation Safety Agency

ECCAIRS

European Coordination Centre for Accident & Incident Reporting Systems     

ECAM

Electronic Centralised Aircraft Monitor

ECM

Electronic Control Mode

ECS

Environmental Control System

ECU

Electronic Control Unit

EDP

Engine Driven Pump

EEA

European Economic Area

EEL

Emergency Equipment List

EFB

Electronic Flight Bag

EFIS

Electronic Flight Instrument System

EFVS

Enhanced Flight Vision System

EGPWS

Enhanced Ground Proximity Warning System

EGT

Exhaust Gas Temperature

EICAS

Engine Instrument and Crew Alerting System

ELT

Emergency Locator Transmitter

EO

Engineering Order

EOL

End of Lease

EPR

Engine Pressure Ratio

ER

Extended Range

ESN

Engine Serial Number

ESS

Essential

ETA

Estimated Time of Arrival

ETD

Estimated Time of Departure

ETOPS

Extended-range Twin-engine Operational Performance Standards

EVS

Enhanced Vision System

EW

Empty Weight

EWIS

Electrical Wiring Interconnection System

EXT

External

EZAP

Enhanced Zonal Analysis Procedure

FA

Flight Attendant

FAA

Federal Aviation Administration

FADEC

Full Authority Digital Engine Control

FAF

Final Approach Fix

FAK

First Aid Kit

FAP

Flight Attendant Panel

FBO

Fixed-Based Operator

FANS

Future Air Navigation System

FC

Flight Cycle

FCOM

Flight Crew Operations Manual

FD

Flight Director / Flight Display

FDD

Flying Display Director

FDM

Flight Data Monitoring

FDR

Flight Data Recorder

FFS

Full Flight Simulator

FGC

Flight Guidance Computer

FGS

Flight Guidance System

FH

Flight Hours

FIR

Flight Information Region

FL

Flight Level

FLCH

Flight Level Change

FLTA

Forward Looking Terrain Avoidance

FMS

Flight Management System

FO

First Officer

FOD

Foreign Object Damage/Foreign Object Debris

FOR

Flight Operations Representative

FOV

Field of View

FMC

Flight Management Computer

FPA

Flight Path Angle

FRQ

Frequency

FSTD

Flight Simulation Training Devices

FTE

Flight Technical Error

FTS

Fuel Tank Safety

FWD

Forward

GA

General Aviation

GBAS

Ground Based Augmentation System

GM

Guidance Material

GND

Ground

GNSS

Global Navigation Satellite System

GPS

Global Positioning System

GPU

Ground Power Unit

GPWS

Ground Proximity Warning System

GSE

Ground Support Equipment

HDG

Heading

HF

High Frequency

HFDL

HF Data Link

HFRS

Heated Fuel Return System

HMI

Human/Machine Interface

HP

High Pressure

HPC

High Pressure Compressor

HPL

Horizontal Protection Level

HPT

High Pressure Turbine

HT

Hard Time

HUD

Head Up Display

HYD

Hydraulic

HZ

Hertz (circles per second)

IAF

Initial Approach Fix

IAIP

Integrated Aeronautical Information Package

IAP

Instrument Approach Procedure

IAS

Indicated Air Speed

IATA

International Air Transport Association

IAW

In Accordance With

IB

Inboard

IBIS

ICAO Birdstrike Information System

ICA

Instructions for Continued Airworthiness

ICAO

International Civil Aviation Organization

IDERA

Irrevocable De-Registration and Export Request Authorisation

IFE

In-Flight Entertainment (System)

IFIS

Integrated Flight Information System

IFR

Instrument Flight Rules

IFSD

In Flight Shutdown

IGN

Ignition

IMC

Instrument Meteorological Conditions

IOM

Isle of Man

IOMAR

Isle of Man Aircraft Registry

IOSA

IATA Operational Safety Audit

ILS

Instrument Landing System

INHIB

Inhibit

INOP

Inoperative

INS

Inertial Navigation System

IPC

Illustrated Parts Catalogue

IRS

Inertial Reference System

IRU

Inertial Reference Unit

ISA

International Standard Atmosphere

KIAS

Knots Indicated Airspeed

LCC

Low Cost Carrier

LDG

Landing

LDND

Last Done / Next Due

LE

Leading Edge

LG

Landing Gear

LNAV

Lateral Navigation

LOA

Letter of Acceptance

LOI

Letter of Intent

LOPA

Layout of Passenger Accommodations

LOTC

Loss of thrust or power control

LLP

Life Limited Part

LNAV

Lateral Navigation

 LP

Localizer Performance

LPC

Low Pressure Compressor

LPT

Low Pressure Turbine

LPV

Localizer Performance with Vertical guidance

LRNS

Long Range Navigation Systems

LRCS

Long Range Communication Systems

LRU

Line Replaceable Unit

LVO

Low Visibility Operations

LVTO

Low Visibility Take-Off

LW

Landing Weight

MAC

Mean Aerodynamic Chord

MAHP

Missed Approach Holding Point

MAS

Missed Approach Segment

MCDU

Multifunction Control Display Unit

MDA

Minimum Decision/Descent Altitude

MDH

Minimum Decision/Descent Height

MDDR

Maintenance Deferred Defect Record

MEL

Minimum Equipment List

METAR

Aerodrome Routine Meteorological Report

MFD

Manufacture Date / Multi-function display

MMEL

Master Minimum Equipment List

MNPS

Minimum Navigation Performance Specification

MOD

Modification

MOE

Maintenance Organization Exposition

MOPP

Maintenance/Operational/Placarding Procedures

MOR

Mandatory Occurrence Report

MPD

Maintenance Planning Document

MRB

Maintenance Review Board

MRO

Maintenance and Repair Organization

MSL

Mean Sea Level

MSN

Manufacturer’s Serial Number

MTOM

Maximum Take-Off Mass

MTOW

Maximum Take-Off Weight

MTWA

Maximum Total Weight Authorised

NAT HLA (MNPS)

North Atlantic High Level Airspace (Minimum Navigation Performance Specification)

NAA

National Aviation Authority

NAV

Navigation

NCC

Non Commercial Operations with Complex Motor-Powered Aircraft

NATR

Nominated Airworthiness Technical Representative

NAVAID

Navigational Aid

NavDB

Navigation Database

NCC

Non-Commercial operations with Complex motor-powered aircraft

NCO

Non-commercial operations with other than complex-motor-powered aircraft

NDT

Non Destructive Testing

NEF

Non-Essential Equipment and Furnishings

NIS

Non Incident Statement

NLG

Nose Landing Gear

NM

Nautical Mile

NOTAM

Notice to Airmen

NRC

Non-Routine Card

NQE

National Qualified Entity (drone training organisation)

NSE

Navigation System Error

NWS

Nose Wheel Steering

OB

OutBoard

O&M

Operational and Maintenance

OCCM

On Condition/Condition Monitored components

OEM

Original Equipment Manufacturer

OHM

OverHaul Manual

OJTI

On the Job training Instructor

OR

Occurrence Report

ORA

Operational Risk Assessment

OSD

Operational Suitability Data

PA

Passenger Address

PAN OPS

Procedures for Air Navigation Services, Aircraft Operations

PAX

Passenger

PBCS

Performance Based Communication and Surveillance

PBE

Protective Breathing Equipment

PBN

Performance Based Navigation

PDE

Path Definition Error

PED

Portable Electronic Device

PERF

Performance

PF

Pilot Flying

PFD

Primary Flight Dispaly

PIC

Pilot in Command

PIFCA

Primary Instructions for Continuing Airworthiness

PIREP

Pilot Report

PLB

Personal Locator Beacon

POA

Power of Attorney

POH

Pilot’s Operating Handbook

PM

Pilot Monitoring

PNF

Pilot Not Flying

PPR

Prior Permission Required

PPtA

Person Presenting the Aircraft

P-RNAV

Precision-Area Navigation

PSE

Principal Structural Equipment

PSR

Primary Surveillance Radar

PSU

Passenger/Personal Service Unit

PtF

Permit To Fly

PTU

Power Transfer Unit

PWR

Power

QA

Quality Assurance

QAR

Quick Access Recorder

QM

Quality Manual

QRH

Quick Reference Handbook

QTY

Quantity

RA

Resolution advisory (ACAS/TCAS)

RADAR

Radio Detection and Ranging

RAIM

Receiver Autonomous Integrity Monitoring

RAT

Ram Air Turbine

RCP

Required Communication Performance

REV

Revision

RIE

Rectification Interval Extension

RF

Radius-to-Fix

RFM

Rotorcraft Flight Manual

RNAV

Area Navigation

RNP

Required Navigation Performance

RNP AR

Required Navigation Performance (Authorisation Required)

RP

Registry Publication

RPAS

Remotely Piloted Aerial Systems

RSP

Required Surveillance Performance

RTS

Return to Service

RVR

Runway Visual Range

RVSM

Reduced Vertical Separation Minima

SAAAR

Special Aircraft and Aircrew Authorization Required

SARPS

International Standards and Recommended Practices

SATCOM

Satellite Communication

SATIS

Satisfactory

SATVOICE

Satellite Voice

SB

Service Bulletin

SBAS

Satellite Based Augmentation System

SELCAL

Selective Calling

SERA

Standardised European Rules of the Air

SIC

Second in Command

SID

Standard Instrument Departure Route

SIFCA

Supplementary Instructions for Continuing Airworthiness

SIGWX

Significant weather chart

SMS

Safety Management System

SN

Serial Number

SPECI

Aerodrome Special Meteorological Report

SPI

Safety Performance Indicator

SSP

Satellite Service Provider / State Safety Programme

SSR

Secondary Surveillance Radar

STAR

Standard Arrival Route

STBY

Standby

STC

Supplementary Type Certificate

SUA

Small Unmanned Aircraft

SUSA

Small Unmanned Surveillance Aircraft

SV

Shop Visit / Serviceable

SVR

Shop Visit Report

TAWS

Terrain Awareness and Warning System

TA

Technical Acceptance / Traffic advisory (ACAS/TCAS)

TAF

Terminal Aerodrome Forecast

TC

Type Certificate / Total Cycles / Technical Consultant

TCAS

Traffic Collision Avoidance System

TCCA

Transport Canada

TCDS

Type Certificate Data Sheet

TCO

Third Country Operators

TE

Trailing Edge

TLB

Technical Log Book

TO

Take-off

TOGA

Take-off/Go-around

TR

Thrust Reverser

TRAM

Training Requirements Application Manual

TSN

Time Since New

TSO

Time Since Overhaul

TSSV

Time Since Shop Visit

TT

Total Time

TTL

Taxi Take-off and Landing

UAS

Unmanned Aerial Systems

UAV

Unmanned Aerial Vehicle

UCS

Unit Competency Scheme

UHF

Ultra High Frequency

UKAB

UK Airprox Board

ULB

Underwater Locator Beacon

US

Unserviceable

USOAP

ICAO Universal Safety Oversight Audit Programme

UTC

Universal Time Coordinated

UTP

Unit Training Plan

VAAC

Volcanic Ash Advisory Centre

VDI

Vertical Deviation Indicator

VDL

VHF Data Link

VFR

Visual Flight Rules

VHF

Very High Frequency

VMC

Visual Meteorological Conditions

VNAV

Vertical Navigation

VOR

Very High Frequency (VHF) Omni-Directional Range

VREF

Reference Speed (Knots)

VS

Stall Speed (Knots)

W&B

Weight & Balance

WOW

Weight on Wheels

WX

Weather

XPDR

Transponder

X-REF

Cross Reference