A

ABS

Auto Brake System

AC

Alternating Current

ACARS

Aircraft Communications Addressing and Reporting System

ACP

Audio Control Panel

ADF

Automatic Direction Finder

ADIRU

Air Data Inertial Reference Unit

ADL

Airborne Data Loader

ADM

Air Data Module

ADS

Automatic Dependent Surveillance

AFS

Auto Flight System

A-ICE

Anti-Ice

AIL

Aileron

ALN

Align

ALT

Altitude; Alternate

ALTN

Alternate

AND

Airplane Nose Down

ANNUN

Annunciator

ANP

Actual Navigation Performance

ANT

Antenna

ANU

Airplane Nose Up

AOC

Aeronautical Operational Communications

AP

Autopilot

APCDU APU

Power Conversion and Distribution Units

APU

Auxiliary Power Unit

AREU

Audio Remote Electronics Unit

ARPT

Airport

ARR

Arrival

A/S

Airspeed

AT or A/T

Autothrottle

ATC

Air Traffic Control

ATR

Automatic Thrust Restoration

ATS

Autothrottle System

ATT

Attitude, Attendant

ATTND

Attendant

AUTO

Automatic

AUX

Auxiliary

AVAIL

Available

B

BARO

Barometric

BATT

Battery

BLS

Bezel Light Sensor

BRT

Bright; Brightness

C

C

Celsius, Center

CAP

Capture

CAPT

Captain

CAWS

Central Aural Warning System

CG

Center of Gravity

CH, CHAN

Channel

CHR

Chronograph

CKPT

Cockpit

CL

Closed

CLB

Climb

CLMP

Clamp

CLR

Clear

CMD

Command

CMP,

CMPTR Computer

COMM

Communication

CONFIG

Configuration

CONT

Control; Continuous

CONSEQ

Consequence

CPA

Closest Point of Approach

C/PDLC

Controller/Pilot Datalink Communications

CRS

Course

CRZ

Cruise

CTR

Center; Crosstie Relay

CVR

Cockpit Voice Recorder

D

DC

Direct Current

D/D

Driftdown

DECR

Decrease

DEG

Degree

DEP

Departure

DES, DESC

Descent

DEST

Destination

DET

Detector; Detection, Detect

DFDAU

Digital Flight Data Acquisition Unit

DFDR

Digital Flight Data Recorder

DH

Decision Height

DIR INTC

Direct Intercept

DISAG

Disagree

DME

Distance Measuring Equipment

DTG

Distance To Go

DTW

Distance To Waypoint

DU

Display Unit

E

EAD

Engine and Alert Display

ECON

Economy

ECP

Electronic Control Panel

ECU

Electronic Control Unit

E/D

End Of Descent

E/E

Electrical/Electronic

EEC

Electronic Engine Control

EGT

Exhaust Gas Temperature

EIS

Electronic Instrument System

ELEC

Electric; Electrical

EMER

Emergency

ENG

Engine

ENG OUT D/D

Engine Out Driftdown

E/O

Engine Out

EPCU

Electrical Power Control Unit

EPR

Engine Pressure Ratio

ET

Elapsed Time

ETA

Estimated Time Of Arrival

ETD

Estimated Time Of Departure

ETE

Estimated Time En Route

EXEC

Execute

EXT

External; Extend

F

F

Fahrenheit

FADEC

Full-authority Digital Electronic Control

FANS

Future Air Navigation System

FCC

Flight Control Computer

FCOM

Flight Crew Operating Manual

FCP

Flight Control Panel

FD

Flight Director

FF

Final Approach Fix

F-F

Fuel Flow

FGS

Flight Guidance System

FL

Flight Level

FLAR

Flare

FLEX TO

Flex Takeoff

FLO

Flow

FLR

Flare

FLT

Flight

FLT DIR

Flight Director

FLT RCDR

Flight Recorder

FMA

Flight Mode Annunciator

FMC

Flight Management Computer

FMS

Flight Management System

F/O

First Officer

FPA

Flight Path Angle

FPM

Feet/Minute

FQS

Fuel Quantity System

FREQ

Frequency

FT

Feet

FWD

Forward

G

G

Acceleration Of Gravity, Generator

GA, G/A

Go-Around

GEN

Generator

GMT

Greenwich Mean Time

GNSSU

Global Navigation System Sensor Units

GPS

Global Positioning System

GPWS

Ground Proximity Warning System

GS

Ground Speed; Ground Service

GS or G/S

Glideslope

GW

Gross Weight

H

HDG

Heading

HF

High Frequency

HI

High

HLD

Hold

HP

High Pressure

HYD

Hydraulic

I

I/O

Input/Output

IAS

Indicated Airspeed

IDENT

Identifier; Identification

IDG

Integrated Drive Generator

ILS

Instrument Landing System

INCR

Increase

IN HG

Inches of Mercury

INIT

Initialization

INOP

Inoperative

INSTR

Instrument

INT

Intercom; Intermittent

INTC

Intercept

INTPH

Interphone

IRS

Internal Reference System

IRU

Internal Reference Unit

ISA

International Standard Atmosphere

ISOL

Isolation

J

K

KIAS

Knots Indicated Airspeed

L

L

Left

LAND

Landing

LAT

Lateral; Latitude

LBS

Pounds

LCDU

Liquid-Crystal Display Units

LDG

Landing

LED

Light Emitting Diode

LIM

Limit

LNAV

Lateral Navigation

LND

Land

LO

Low

LOC

Localizer

LONG

Longitude

LP

Low Pressure

LRC

Long Range Cruise

LSK

Line Select Key

LT(S)

Light(s)

LWD

Left Wing Down

M

M

Mach, Meters

MAG

Magnetic

MAINT

Maintenance

MAN

Manual, Maneuvering

MAX

Maximum

MAX ALT

Maximum Engine Out Altitude

MAX CLB

Maximum Climb

MAX DES

Maximum Descent

MAX END

Maximum Endurance

MB

Millibars

MCDU

Multipurpose Control and Display Unit

MCL

Maximum Climb (Engine Rating)

MCT

Maximum Continuous Thrust (Engine Rating)

MECH

Mechanic

MED

Medium

MIC

Microphone

MIN

Minimum; Minute

MISC

Miscellaneous

MKR

Marker

MLG

Main Landing Gear

MLW

Maximum Landing Weight

MMEL

Master Minimum Equipment List

MMO

Maximum Operating Mach

MOM

Momentary

MSG

Message

MSP

Mode Select Panel

MTES

Maintenance Test Enable Switch

MTOGW

Maximum Takeoff Gross Weight

MU

Management Unit

N

N/A

Not Available

NACL

Nacelle

N1

Engine Low Pressure Rotor RPM

N2

Engine High Pressure Rotor RPM

NAV

Navigation

ND

Navigation Display

NDB

Non-Directional Beacon

NL

Nose Left

NLG

Nose Landing Gear

NR

Nose Right

NORM

Normal

O

OFST

Offset

OP

Open

OVHD

Overhead

OVRD

Override

OXY

Oxygen

P

PA

Passenger Address

PBD

Place/ Bearing/ Distance

PBE

Protective Breathing Equipment

PED

Pedestal

PERF PEN

Performance Penalty

PFD

Primary Flight Display

PLAN

Plan Mode

PLI

Pitch Limit Indicator

PMP

Pump

PNEU

Pneumatic

PNL

Panel

POS

Position

PPH

Pounds Per Hour

PRAM

Prerecorded Announcement Machine

PRES,

PRESS Pressure

PROF

Profile

PROG

Progress

PROX

Proximity

PSEU

Proximity Switch Electronics Unit

PSI

Pounds Per Square Inch

PSU

Passenger Service Utilities

PTT

Push To Talk

PTU

Power Transfer Unit

PWR

Power

PWS

Predictive Windshear

Q

QFE

Field Elevation Pressure

QNH

Sea Level Pressure

QTY

Quantity

R

R

Right

RA

Radio Altitude, Resolution Advisory

RAT

Ram Air Temperature

RDR

Rudder

REF

Reference

RET

Retract

RETD

Retard

REV

Reverser

RHM

Rudder Hook Monitor

RLS

Remote Light Sensor

RNAV

Area Navigation

RNP

Required Navigation Performance

RPM

Revolutions Per Minute

RSL

Rudder Stop Limiter

RTE

Route

RTO

Rejected Takeoff

RUD

Rudder

RWD

Right Wing Down

RWY

Runway

S

SAT

Static Air Temperature

SATCOM

Satellite Communication System

SCP

System Control Panel

S/C

Step Climb

S/D

Step Descent

SD

System Display

SDP

System Display Panel

SDCP

System Display Control Panel

SEL

Select; Selector; Selected

SELCAL

Selective Calling

SENS

Sensitivity

SID

Standard Instrument Departure

SMOK

Smoking

SPD BRK

Speed Brake

SPD

Speed

STAB

Stabilizer; Stabilization

STAR

Standard Terminal Arrival Route

STBY

Standby

STD

Standard

SW

Switch

SYNC

Synchronizer

SYS

System

T

TA

Traffic Advisory

TAKOFF

Takeoff

TAS

True Air Speed

TAT

Total Air Temperature

TBD

To Be Determined

TCAS

Traffic Alert Collision Avoidance System

TD

Traffic Display

TEMP

Temperature

TFR

Transfer

TGT

Turbine Gas Temperature

THNDSTRM

Thunderstorm

THROT

Throttle

TO, T/O

Takeoff

TOC

Top Of Climb

TOD

Top Of Descent

TO FLEX

Takeoff Flexible Derate

TOGA

Takeoff and Go-Around

TOGW

Takeoff Gross Weight

TR

Transformer Rectifier

TRANS

Transition; Transfer

TRFC

Traffic

TRK

Track

TRU

True

TURB

Turbulence

U

U/L

Unlocked

UNBAL

Unbalanced

V

Vapp

Approach Speed

VDC

Volts Direct Current

VERT

Vertical

Vfe

Flap Extend Speed

Vfr

Flap Retract Speed

Vge

Gear Entend Speed

Vgr

Gear Retract Speed

VHF

Very High Frequency

VIA

Versatile Integrated Avionics

VIB

Vibration

VLV

Valve

Vmax

FMC Calculated Max Operating Speed

Vmin

FMC Calculated Min Operating Speed

Vmo

Maximum Operating Speed

VNAV

Vertical Navigation

VOL

Volume

VOR

VHF Omnidirectional Range

Vref

Reference Approach Speed

Vs

Stall Speed

Vse

Slat Extend Speed

Vso

Clean Stall Speed

Vsr

Slat Retract Speed

Vss

Stickshaker Speed

V/S

Vertical Speed

VSI

Vertical Speed Indicator

V1

Critical Engine Failure Speed; Decision Speed

V2

Takeoff Safety Speed; Climbout Speed

V3

Final Segment Climb Speed

W

WAGS

Windshear Alert Guidance System

WARN

Warning

WINDSHLD

Windshield

WINDSHR, WNDSHR

Windshear

WOW

Weight On Wheel

WPT

Waypoint

W/S

Windshear

WSC

Windshear Computer

WT

Weight

WX, WXR

Weather Radar

WXBRT

Weather Radar Brightness

WX+T

Weather and Turbulence

X

X FEED

Crossfeed

XFER, XFR

Transfer

XPDR

Transponder

Y

Z

ZFW

Zero Fuel Weight

ZFWCG

Zero Fuel Weight Center of Gravity