A320 abbreviations

A

A/BRK

Autobrake

A/C

Aircraft

A/L

Airline

A/SKID

Anti-skid

A/THR

Autothrust

AA

Airworthiness Authorities

AAL

Above Aerodrome Level

AAT

Aircraft Allocation Table

ABCU

Alternate Braking Control Unit

ABN

Abnormal

ABV

Above

AC

Alternating Current

ACARS

ARINC Communication Addressing and Reporting System

ACAS

Airborne Collision Avoidance System

ACC

Active Clearance Control

ACCEL

Acceleration

ACCU

Accumulator

ACD

Airworthiness Compliance Document

ACK

Acknowledge

ACP

Audio Control Panel

ACSC

Air Conditioning System Controller

ACT

Additional Centre Tank

ADC

Air Data Computer

ADF

Automatic Direction Finder

ADIRS

Air Data Inertial Reference System

ADIRU

Air Data Inertial Reference Unit

ADM

Air Data Module

ADR

Air Data Reference

ADS

Automatic Dependent Surveillance

ADS-B

Automatic Dependent Surveillance - Broadcast

ADS-C

Automatic Dependent Surveillance - Contract

ADV

Advisory

AEVC

Avionic Equipment Ventilation Controller

AFM

Airplane Flight Manual

AFMC

Auxiliary Fuel Management Computer

AFMS

Auxiliary Fuel Management System

AFS

Auto Flight System

AGL

Above Ground Level

AIDS

Aircraft Integrated Data System

AIL

Aileron

AIME

Autonomous Integrity Monitoring Extrapolation

AIP

Attendant Indication Panel

AIRAC

Aeronautical Information Regulation And Control

ALD

Actual Landing Distance

ALT

Altitude

ALTN

Alternate

ALTSM

Altimeter Setting Monitor

AMC

Acceptable Means of Compliance

AMI

Airline Modifiable Information

AMM

Aircraft Maintenance Manual

AMU

Audio Management Unit

ANT

Antenna

AOA

Angle of Attack

AOC

Airline Operational Control

AP

Autopilot

APP

Approach

APPR

Approach

APPU

Asymmetry Position Pick-off Unit

APU

Auxiliary Power Unit

AR

Authorisation Required

ARINC

Aeronautical Radio Incorporated

ARN

Aircraft Registration Number

ARPT

Airport

ARR

Arrival

ASAP

As Soon As Possible

ASD

Accelerate Stop Distance

ASDA

Accelerate Stop Distance Available

ASI

Air Speed Indicator

ATA

Air Transport Association

ATC

Air Traffic Control

ATIS

Automatic Terminal Information System

ATM

Air Traffic Management

ATN

Aeronautical Telecommunications Network

ATS

Air Traffic Service

ATSAW

Airborne Traffic Situational Awareness

ATSU

Air Traffic Service Unit

ATT

Attitude

AUTO

Automatic

AVNCS

Avionics

AWY

Airway

B

B/C

Back Course

BACF

Braking Action Computation Function

BACV

Buffer Air Check Valve

BARO

Barometric

BASOV

Buffer Air Shut Off Valve

BAT

Battery

BCL

Battery Charge Limiter

BCU

Backup Control Unit

BDDV

Brake Dual Distribution Valve

BFO

Beat Frequency Oscillator

BITE

Built-In Test Equipment

BKUP

Backup

BLW

Below

BMC

Bleed Monitoring Computer

BPS

Back-Up Power Supply

BRG

Bearing

BRK

Brake

BRT

Bright

BSCU

Brake and Steering Control Unit

BTC

Bus Tie Contactor

BTL

Bottle

BTS

Bleed Temperature Sensor

BUS

Busbar

BUSS

Back Up Speed Scale

C

C/B

Circuit Breaker

C/L

Checklist

CAB

Cabin

CAPT

Captain, Capture

CAS

Calibrated Airspeed

CAT

Category

CCD

Cursor Control Device

CDA

Continuous Descent Approach

CDL

Configuration Deviation List

CDLS

Cockpit Door Locking System

CDO

Continuous Descent Operations

CDSS

Cockpit Door Surveillance System

CDU

Control Display Unit

CF

Cost of Fuel

CFDIU

Centralised Fault Display Interface Unit

CFDS

Centralised Fault Display System

CFIT

Controlled Flight Into Terrain

CG

Centre of Gravity

CHAN

Channel

CHG

Change

CI

Cost Index

CIDS

Cabin Intercommunication Data System

CIDS-SDF

Cabin Intercommunication Data System - Smoke Detection Function

CINS

Cabin Information Network System

CKPT

Cockpit

CL

Climb

CLB

Climb

CLR

Clear

CM1

Crewmember 1 (left seat)

CM2

Crewmember 2 (right seat)

CMS

Centralised Maintenance System, Constant Mach Segment

CO

Company

CO RTE

Company Route

COM

Communication

COMM

Communication

COND

Conditioning

CONF

Configuration

CONFIG

Configuration

CONT

Continuous

CP

Control Panel

CPC

Cabin Pressure Controller

CPDLC

Controller-Pilot Datalink Communication

CRC

Continuous Repetitive Chime

CRG

Cargo

CRS

Course

CRT

Cathode Ray Tube

CRZ

Cruise

CSAS

Conditioned Service Air System

CST

Constraint

CSTR

Constraint

CT

Cost of Time

CTL

Control

CTL PNL

Control Panel

CTR

Centre

CVR

Cockpit Voice Recorder

D

DA

Drift Angle

DAC

Double Annular Combustor

D-ATIS

Datalink Automatic Terminal Information Service

DBUS

Digital Backup Speed

DC

Direct Current

DCDU

Datalink Control and Display Unit

DCL

Digital Cabin Logbook

DCMS

Doors Control and Monitoring System

DDRMI

Digital Distance and Radio Magnetic Indicator

DECEL

Deceleration

DES

Descent

DEST

Destination

DET

Detection, Detector

DEV

Deviation

DFDR

Digital Flight Data Recorder

DH

Decision Height

DIR

Direction

DIR TO

Direct To

DISC

Disconnect

DIST

Distance

DMC

Display Management Computer

DME

Distance Measuring Equipment

DMU

Data Management Unit (Aids)

DN

Down

DPO

Descent Profile Optimisation

DSDL

Dedicated Serial Datalink

DTG

Distance To Go

DTO

Derated Takeoff

DU

Display Unit, Documentary Unit

E

E/WD

Engine/Warning Display

EASA

European Union Aviation Safety Agency

ECAM

Electronic Centralised Aircraft Monitoring

ECB

Electronic Control Box (APU)

ECM

Engine Condition Monitoring

ECON

Economic

ECP

ECAM Control Panel

ECU

Engine Control Unit

EDP

Engine-Driven Pump

EEC

Electronic Engine Computer

EFB

Electronic Flight Bag

EFF

Electronic Flight Folder

EFIS

Electronic Flight Instruments System

EFOB

Estimated Fuel On Board

EGPWS

Enhanced Ground Proximity Warning System

EGT

Exhaust Gas Temperature

EIS

Electronic Instruments System

EIU

Engine Interface Unit

EIVMU

Engine Interface and Vibration Monitoring Unit

ELAC

Elevator Aileron Computer

ELEC

Electrics

ELEV

Elevator

ELT

Emergency Locator Transmitter

ELV

Elevation

EMER

Emergency

EMER GEN

Emergency Generator

ENG

Engine

EO

Engine-Out

EOSID

Engine-Out Standard Instrument Departure

EPE

Estimated Position Error

EPR

Engine Pressure Ratio

EPU

Emergency Power Unit, Estimated Position Uncertainty

EQPT

Equipment

ESF

Estimated Suitable Friction

ESS

Essential

ETA

Estimated Time of Arrival

ETOPS

Extended Twin Operations

ETP

Equal Time Point

ETT

Estimated Time of Takeoff

EVAC

Evacuation

EVMU

Engine Vibration Monitoring Unit

EWD

Engine/Warning Display

EXP

Expedite

EXT PWR

External Power

EXTN

Extension

F

F

Fuel

F/CTL

Flight Control

F/O

First Officer

FAA

Federal Aviation Administration

FAC

Flight Augmentation Computer

FADEC

Full Authority Digital Engine Control System

FAF

Final Approach Fix

FANS

Future Air Navigation System

FAP

Flight Attendant Panel, Forward Attendant Panel, Final Approach Point

FAR

Federal Aviation Regulations

FCDC

Flight Control Data Concentrator

FCOM

Flight Crew Operating Manual

FCTM

Flight Crew Techniques Manual

FCU

Flight Control Unit

FD

Flight Director

FDGS

Fan Drive Gear System

FDIMU

Flight Data Interface and Management Unit

FDIU

Flight Data Interface Unit

FDP

Final Descent Point

FDU

Fire Detection Unit

FEP

Final End Point

FF

Fuel Flow

FG

Flight Guidance

F-G/S

FLS Glide Slope

FL

Flight Level

FLEX

Flexible

F-LOC

FLS Localiser

FLS

FMS Landing System

FLSCU

Fuel Level Sensing Control Unit

FLT

Flight

FLX

Flexible

FLXTO

Flexible Takeoff

FM

Flight Management

FMA

Flight Mode Annunciator

FMC

Flight Management Computer

FMGC

Flight Management and Guidance Computer

FMGS

Flight Management and Guidance System

FMS

Flight Management System

FMV

Fuel Metering Valve

FOB

Fuel On Board

FOD

Foreign Object Debris, Foreign Object Damage

FOHE

Fuel Oil Heat Exchanger

FOM

Figure Of Merit

FPA

Flight Path Angle

FPD

Flight Path Director

F-PLN

Flight Plan

FPPU

Feedback Position Pick-off Unit

FPV

Flight Path Vector

FQ

Fuel Quantity

FQI

Fuel Quantity Indication

FQIC

Fuel Quantity Indication Computer

FQMS

Fuel Quantity and Management System

FREQ

Frequency

FRV

Fuel Return Valve

FTIS

Fuel Tank Inerting System

FU

Fuel Used

FWC

Flight Warning Computer

FWD

Forward

FWS

Flight Warning System

G

G/S

Glideslope

GA

Go-Around

GAPCU

Ground and Auxiliary Power Control Unit

GBAS

Ground Based Augmentation System

GCAS

Ground Collision Avoidance System

GCS

Ground Clutter Suppression

GCU

Generator Control Unit

GDU

Group of Documentary Unit

GE

General Electric

GEN

Generator

GES

Ground Earth Station

GLC

Generator Line Contactor

GLS

GBAS Landing System, GNSS Landing System

GMT

Greenwich Mean Time

GND

Ground

GND TEMP

Ground Temperature

GNSS

Global Navigation Satellite System

GPCU

Ground Power Control Unit

GPIRS

Global Positioning and Inertial Reference System

GPS

Global Positioning System

GPSSU

GPS Sensor Unit

GPU

Ground Power Unit

GPWS

Ground Proximity Warning System

GRND

Ground

GRVTY

Gravity

GS

Ground Speed

GSM

Global System for Mobile Communication

GW

Gross Weight

H

HCU

Hydraulic Control Unit, HUD Combiner Unit

HDG

Heading

HF

High Frequency

HI

High

HM

Holding Pattern with a Manual Termination

HMU

Hydrau-Mechanical Unit

HP

High Pressure

HPA

Hectopascal

HPC

High Pressure Compressor

HPFD

Harmonised Primary Flight Display

HPSOV

High Pressure Shut-off Valve

HPT

High Pressure Turbine

HPV

High Pressure Valve

HUD

Head Up Display

HUDC

Head Up Display Computer

HYD

Hydraulic

I

I/P

Input or Intercept Profile

IAF

Initial Approach Fix

IAS

Indicated Airspeed

IATA

International Air Transport Association

ICAO

International Air Transport Organisation

ID

Identification

IDENT

Identification

IDG

Integrated Drive Generator

IFE

In Flight Entertainment

IFPC

Integrated Fuel Pump and Control

IFR

Instrument Flight Rules

IGGS

Inert Gas Generation System

IGN

Ignition

IGV

Inlet Guide Vanes

ILS

Instrument Landing System

IM

Inner Marker

IMC

Instrument Meteorological Conditions

IMM

Immediate

INB

Inbound

IND

Indicator

INIT

Initialisation

INOP

Inoperative

INR

Inner

INST

Instrument

INT

Interphone, Internal, Integrated, Interior

INTCP

Intercept

INTCPT

Intercept

INV

Inverter

IP

Intermediate Pressure

IPPU

Instrumentation Position Pick-off Unit

IR

Inertial Reference

IRS

Inertial Reference System

ISA

International Standard Atmosphere

ISIS

Integrated Standby Instrument System

ISOL

Isolation

ISPSS

In-Seat Power Supply System

ISPSU

In-Seat Power Supply Unit

ITP

In-Trail Procedure

J

JAA

Joint Aviation Authorities

JAR

Joint Aviation Requirements

L

L/DEV

Lateral Deviation

L/G

Landing Gear

LAF

Load Alleviation Function

LAT

Lateral, Latitude

LAT REV

Lateral Revision

LAV

Lavatory

LCD

Liquid Crystal Display

LDA

Landing Distance Available, Localiser Directional Aid

LDG

Landing

LDS

Laptop Docking Station

LED

Light Emitting Diode

LEDU

List of Effective Documentary Units

LEOEB

List of Effective Operations Engineering Bulletins

LESS

List of Effective Section/Subsections

LGCIU

Landing Gear Control Interface Unit

LH

Left-Hand

LIM

Limitation

LK

Lock

LL

Latitude/Longitude

LO

Low

LOC

Localiser

LONG

Longitude

LP

Low Pressure

LPC

Low Pressure Compressor

LPT

Low Pressure Turbine

LRU

Line Replaceable Unit

LS

Loudspeaker

LSK

Line Select Key

LT

Light

LVL

Level

LVL/CH

Level Change

LVR

Lever

LW

Landing Weight

M

MAC

Mean Aerodynamic Chord

MAG

Magnetic

MAINT

Maintenance

MAN

Manual

MAP

Missed Approach Point

MAX

Maximum

MCDU

Multipurpose Control and Display Unit

MCT

Maximum Continuous Thrust

MDA

Minimum Descent Altitude

MDCD

Main Deck Cargo Door

MDDU

Multifunction Disk Drive Unit

MDH

Minimum Descent Height

MEA

Minimum En Route Altitude

MECH

Mechanic

MED

Medium

MEL

Minimum Equipment List

MEM

Memory

MGB

Main Gearbox

MID

Middle

MIN

Minimum

MKR

Marker

MLG

Main Landing Gear

MLS

Microwave Landing System

MLW

Maximum Landing Weight

MM

Middle Marker

MMEL

Master Minimum Equipment List

MMO

Mach Maximum Operational

MMR

Multi Mode Receiver

MN

Mach number

MOD

Modification

MORA

Minimum Off Route Altitude

MP

Modification Proposal

MRP

Map Reference Point

MSA

Minimum Safe Altitude

MSG

Message

MSL

Mean Sea Level

MSN

Manufacturer Serial Number

MTOW

Maximum Takeoff Weight

MZFW

Maximum Zero Fuel Weight

N

N/A

Not Applicable

N1

Low Pressure Rotor Speed (in %)

N2

High Pressure Rotor Speed (in %)

NAI

Engine Nacelle Anti-Ice

NAV

Navigation

NAVAID

Navigation Aid

NBR

Number

NCD

Non Computed Data

ND

Navigation Display

NDB

Non Directional Beacon

NLG

Nose Landing Gear

NORM

Normal

NOTAM

Notice To Airmen

NPA

Non Precision Approach

NW

Nosewheel

NWS

Nosewheel Steering

O

OANS

On-board Airport Navigation System

OAT

Outside Air Temperature

OCL

Oceanic Clearance

OEB

Operations Engineering Bulletin

OEI

One Engine Inoperative

OFST

Offset

OFV

Outflow Valve

OIT

Onboard Information Terminal

OLB

OPS Library Browser

OM

Outer Marker

OP

Open

OPP

Opposite

OPS

Operations

OPT

Optimum

OVHD

Overhead

OVHT

Overheat

OVRD

Override

OXY

Oxygen

P

P/B

Pushbutton

P/N

Part Number

PA

Passenger Address

PAC

Path Attenuation Compensation

PAX

Passenger

PB

Pushbutton

PBCS

Performance-Based Communication and Surveillance

PBE

Portable Breathing Equipment

PBN

Performance Based Navigation

PCU

Power Control Unit

PED

Portable Electronic Device

PERF

Performance

PES

Passenger Entertainment System

PF

Pilot Flying

PFC

Porous Friction Course

PFD

Primary Flight Display

PGE

Page

PHC

Probes Heat Computer

PIREP

Pilot Report

PM

Pilot Monitoring

PNL

Panel

POB

Pressure Off Brake

POS

Position

PPOS

Present Position

PPU

Position Pick-off Unit

PR

Pressure

PRAM

Pre-recorded Announcement and Music

PRED

Prediction

PRESS

Pressure, Pressurisation

PREV

Previous

PROC

Procedure

PROG

Progress

PROT

Protection

PROTEC

Protection

PRSOV

Pressure Regulating and Shut-Off Valve

PRV

Pressure Regulating Valve

PSCU

Proximity Switch Control Unit

PTT

Push To Talk

PTU

Power Transfer Unit (Hydraulic)

PVI

Paravisual Indicator

PWR

Power

PWS

Predictive Windshear System

Q

QAR

Quick Access Recorder

QCCU

Quantity Calculation Control Unit

QFE

Field Elevation Atmosphere Pressure

QFU

Runway Heading

QNH

Sea Level Atmosphere Pressure

QRH

Quick Reference Handbook

QT

Quart (US)

QTY

Quantity

R

RA

Radio Altimeter, Resolution Advisory

RAAS

Runway Awareness and Advisory System

RACC

Rotor Active Clearance Control

RAD

Radio

RAIM

Receiver Autonomous Integrity Monitoring

RAT

Ram Air Turbine

RCAM

Runway Condition Assessment Matrix

RCP

Required Communication Performance

REAC

Reactive

REC

Recommended

RED

Reduction

REF

Reference, Refer

REG

Regulation

REL

Release

REQ

Request, Require, Required

REV

Reverse

RF

Radio Frequency

RFCF

Runway Field Clearance Floor

RH

Right-Hand

RLD

Required Landing Distance

RMI

Radio Magnetic Indicator

RMP

Radio Management Panel

RNAV

Area Navigation

RNG

Range

RNP

Required Navigation Performance

ROP

Runway Overrun Protection

ROPS

Runway Overrun Prevention System

ROW

Runway Overrun Warning

RPCU

Residual Pressure Control Unit

RPLNT

Repellent

RPTG

Repeating, Reporting

RQRD

Required

RSP

Required Surveillance Performance

RSV

Reserves

RSVR

Reservoir

RTA

Required Time of Arrival

RTE

Route

RTO

Rejected Takeoff

RTOW

Regulatory Takeoff Weight

RUD

Rudder

RVR

Runway Visual Range

RVSM

Reduced Vertical Separation Minimum

RWY

Runway

RWYCC

Runway Condition Code

S

S

South

S/C

Step Climb

S/D

Step Descent, Shut Down

S/F

Slats/Flaps

SAAAR

Special Aircrew and Aircraft Authorisation Required

SAC

Single Annular Chamber

SAL

System Address Label

SAT

Static Air Temperature

SATCOM

Satellite Communication

SAV

Starter Air Valve

SB

Service Bulletin

SBAS

Satellite Based Augmentation System

SC

Single Chime

SCA/SVU

Split Control Unit/Servo Valve Assembly

SD

System Display

SDAC

System Data Acquisition Concentrator

SDCU

Smoke Detection Control Unit

SDF

Smoke Detection Function, Simplified Directional Facility

SDU

Satellite Data Unit

SEC

Spoiler Elevator Computer, Secondary

SEL

Selector

SELCAL

Selective Calling

SFCC

Slat/Flap Control Computer

SI

Slip Indicator

SID

Standard Instrument Departure

SOP

Standard Operating Procedure

SPD

Speed

SPD LIM

Speed Limit

SPLR

Spoiler

SQWK

Squawk

SRS

Speed Reference System

STAR

Standard Terminal Arrival Route

STAT

Static

STAT INV

Static Inverter

STBY

Standby

STD

Standard

STRG

Steering

STS

Status

SURV

Surveillance

sw

Switch

SWTG

Switching

SYS

System

T

T/C

Top of Climb

T/D

Top of Descent

T/O

Takeoff

T2CAS

Traffic and Terrain Collision Avoidance System

T3CAS

Traffic and Terrain Collision Avoidance System

TA

Traffic Advisory

TAB

Temporary Abnormal Behaviour

TAC

Taxiing Aid Camera

TACAN

Tactical Air Navigation

TAD

Terrain Awareness Display

TAS

True Air Speed

TAT

Total Air Temperature

TAU

Time to intercept

TAWS

Terrain Awareness and Warning System

TBD

To Be Determined

TBV

Transient Bleed Valve

TCA

Turbine Cooling Air

TCAS

Traffic Alert and Collision Avoidance System

TCC

Turbine Case Cooling

TCF

Terrain Clearance Floor

TCM

Thrust Control Malfunction

TCMA

Thrust Control Malfunction Accommodation

TDU

Temporary Documentary Unit

TEL

Telephone

TEMP

Temperature

TERR

Terrain

TFLEX

Highest Flexible Temperature

TGT

Target

THR

Thrust

THRT

Threat

THS

Trimmable Horizontal Stabiliser

THSA

Trimmable Horizontal Stabiliser Actuator

TK

Tank, Track

TLA

Throttle Lever Angle

TLU

Travel Limitation Unit

TMPY

Temporary

TMR

Timer

TO

Takeoff

TOC

Table of Contents

TOD

Takeoff Distance

TODA

Takeoff Distance Available

TOGA

Takeoff - Go-Around

TOR

Takeoff Run

TORA

Takeoff Run Available

TOS

Takeoff Surveillance

TOW

Takeoff Weight

T-P

Turn Point

TPIS

Tyre Pressure Indicating System

TR

Transformer Rectifier

TRANS

Transition

TREF

Flat Rating Temperature

TRK

Track

TROPO

Tropopause

TRU

Transformer Rectifier Unit

TRV

Travel

TSM

Trouble Shooting Manual

TTG

Time to Go

TVMC

Minimum Control Speed Temperature

TWY

Taxiway

U

UNLK

Unlock

UP

Up, Upper

USB

Universal Serial Bus

UTC

Universal Coordinated Time

V

V/DEV

Vertical Deviation

V/S

Vertical Speed

V1

Decision Speed

V2

Takeoff Safety Speed

VAPP

Approach Speed

VBV

Variable Bypass Valve

VDEV

Vertical Deviation

VDL

VHF Datalink

VERT

Vertical

VERT REV

Vertical Revision

VFE

Maximum Speed for each Flap configuration

VFTO

Final Takeoff Speed

VHF

Very High Frequency

VIB

Vibration

VIP

Vertical Intersection Point

VLE

Maximum Landing Gear Extended Speed

VLS

Lowest Selectable Speed

VM

Manoeuvring Speed

VMAX

Maximum Allowable Speed

VMC

Visual Meteorological Conditions

VMCA

Minimum Control Speed in the Air

VMCG

Minimum Control Speed on Ground

VMCL

Minimum Control Speed at Landing

VMIN

Minimum Operating Speed

VMO

Maximum Operating Speed

VMU

Minimum Unstick Speed

VNAV

Vertical Navigation

VOR

VHF Omnidirectional Range

VOR-D

VOR-DME

VR

Rotation Speed

VREF

Landing Reference Speed

VS1G

Stall Speed at 1g load factor

VSC

Vacuum System Controller

VSI

Vertical Speed Indicator

VSV

Variable Stator Vane

VSW

Stall Warning Speed

VU

Visual Unit

W

W/S

Wind Shear

WAI

Wing Anti-Ice

WARN

Warning

WBC

Weight and Balance Computer

WBS

Weight and Balance System

WD

Warning Display

WHC

Window Heat Computer

WPT

Waypoint

WS

Windshear

WSHLD

Windshield

WT

Weight

WTB

Wing Tip Brake

WX

Weather

WXR

Weather Radar

X

XFR

Transfer

XPDR

Transponder

XPNDR

Transponder

XTK

Crosstrack Error

Z

ZFCG

Zero Fuel Centre of Gravity

ZFW

Zero Fuel Weight

ZFWCG

Zero Fuel Weight Centre of Gravity field

Symbols

<

less than

>

greater than

≤

less than or equal to

≥

greater than or equal to

=

is equal to