ABN – Abnormal
ACARS – ARINC Communications and Reporting System
ACM – Air Cycle Machine
ACP – Audio Control Panel
ACT – Additional Center Tank
ADIRS – Air Data Inertial Reference System
ADIRU – Air Data Inertial Reference Unit
ADM – Air Data Module
ADR – Air Data Reference
ADV – Advisory
AEVC – Avionics Equipment Ventilation Controller
AFS – Auto Flight System
AIDS – Aircraft Integrated Data System
AIU – Audio Interface Unit
AMU – Audio Management Unit
ANP – Actual Navigation Performance
APPU – Asymmetry Position Pick Off Unit
APU – Auxiliary Power Unit
ARPT – Airport
ASAP – As Soon As Possible
ASI – Air Speed Indicator
A/SKID – Anti-Skid
ATE – Automated Test Equipment
A/THR – Auto Thrust
ATS – Auto Thrust System
ATSU – Air Traffic Service Unit
AWY – Airway

B – Blue
BARO – Barometric
BCL – Battery Charge Limiter
BCDS – Bite Centralized Data System
BFO – Beat Frequency Oscillator
BIU – Bite Interface Unit
BMC – Bleed Monitoring Computer
BNR – Binary
BRK – Brake
BSCU – Brake Steering Control Unit
BTC – Bus Tie Contactor

CBMS – Circuit Breaker Monitoring System
CFDIU – Centralized Fault Data Interface Unit
CFDS – Centralized Fault Display System
CHC – Cargo Heat Controller
CHG – Change
CIDS – Cabin Intercommunication Data System
C/L – Checklist
CO RTE – Company Route
CONF – Configuration (Flaps/Slats)
CPC – Cabin Pressure Controller
CPCU – Cabin Pressure Controller Unit
CRC – Continuous Repetitive Chime
CRG – Cargo
CSCU – Cargo Smoke Control Unit
CSM/G – Constant Speed Motor/Generator
CSTR – Contraint
CTL PNL – Control Panel
CVR – Cockpit Voice Recorder

DA – Drift Angle
DAR – Digital AIDS Recorder
DDRMI – Digital Distance and Radio Magnetic Indicator
DFA – Delayed Flap Approach
DIR TO – Direct To
DITS – Digital Information Transfer System
DMC – Display Management Computer
DSDL – Dedicated Serial Data Link
DU – Display Unit

ECAM – Electronic Centralized Aircraft Monitoring
ECB – Electronic Control Box (APU)
ECM – Engine Conditioning Monitoring
ECON – Economic
ECP – ECAM Control Panel
ECS – Environmental Control System
ECU – Engine Control Unit
EDP – Engine Driven Pump
EEC – Electronic Engine Computer
EFCS – Electronic Flight Control System
EFIS – Electronic Flight Instrument System
EFOB – Estimated Fuel On Board
EIU – Engine Interface Unit
EIS – Electronic Instruments System
ELAC – Elevator Aileron Computer
EMER GEN – Emergency Generator
EO – Engine Out
EPE – Estimated Position Error
EGPWS – Enhanced Ground Proximity Warning System
ESS – Essential
EST – Estimated
ETE – Estimated Time Enroute
ETP – Equal Time Point
EVMU – Engine Vibration Monitoring Unit
E/WD – Engine/Warning Display
EXT PWR – External Power
EXTN – Extension

FAC – Flight Augmentation Computer
FADEC – Full Authority Digital Engine Control
FAP – Forward Attendant Panel
FAV – Fan Air Valve
F/C – Flight Crew
FCDC – Flight Control Data Concentrator
FCU – Flight Control Unit
FD – Flight Director
FDIU – Flight Data Interface Unit
FDU – Fire Detection Unit
FF – Fuel Flow
FGC – Flight Guidance Computer
FIDS – Fault Isolation and Detection System
FLSCU – Fuel Level Sensing Control Unit
FLT CTL – Flight Control
FLX/MCT – Flex/Maximum Continuous Thrust
FMA – Flight Mode Annunciator
FMGC – Flight Management Guidance Envelope Computer
FMGS – Flight Management Guidance Envelope System
F-PLN – Flight Plan
FPA – Flight Path Angle
FPD – Flight Path Director
FPPU – Feedback Position Pick-off Unit
FPV – Flight Path Vector
FQI/FQU – Fuel Quantity Indication/Unit
FQIC – Fuel Quantity Indication Computer
FRT – Front
FRV – Fuel Return Valve
FT/MN – Feet per Minute
FU – Fuel Used
FWC – Flight Warning Computer
FWS – Flight Warning System

G – Green
GCU – Generator Control Unit
GLC – Generator Line Contactor
GNADIRS – Global Navigation Air Data Inertial Reference System
GPCU – Ground Power Control Unit
GRND – Ground
GRP – Geographic Reference Point
GRVTY – Gravity

H – Hour, Hot
HCU – Hydraulic Control Unit
HDG/S – Heading Selected
HDL – Handle
HLD – Hold
HMU – HydroMechanical Unit
HPV – High Pressure Valve

IDG – Integrated Drive Generator
IGN – Ignition
IMM – Immediate
INB – Inbound
INBO – Inboard
INCREM – Increment
INIT – Initialization
INR – Inner
INTCP – Intercept
I/O – Input/Output
I/P – Input or Intercept Profile
IP – Intermediate Pressure
IPC – Intermediate Pressure Checkvalve
IPPU – Intermediate Position Pick-off Unit
ISIS – Integrated Standby Instrument System
ISOL – Isolation

LAF – Load Alleviation Function
LAT – Latitude
LAT REV – Lateral Revision
LCN – Load Classification Number
L/G – Landing Gear
LGCIU – Landing Gear Control Interface Unit
LGPIU – Landing Gear Position Indicator Unit
LIS – Localizer Internal Smoothing
LK – Lock
LL – Latitude/Longitude
LLS – Left Line Select Key
LNAV – Lateral Navigation
LONG – Longitude
LRU – Line Replaceable Unit
LSK – Line Select Key
LVL – Level
LVL/CH – Level Change
LW – Landing Weight

M – Magenta, Mach, Meter
MAG DEC – Magnetic Declination
MAG VAR – Magnetic Variation
MAX CLB – Maximum Climb
MAX DES – Maximum Descent
MAX END – Maximum Endurance
MCDU – Multipurpose Control and Display Unit
MCU – Modular Concept Unit
MDA – Minimum Descent Altitude
MECH – Mechanic
MFA – Memorized Fault Annunciator
MLS – Microwave Landing System
MMR – Multi-Mode Receiver
MN – Mach Number
MRIU – Maintenance and Recording Interface Unit
MSA – Minimum Safe Altitude
MSU – Mode Selector Unit

N – Normal, North
NAVAID – Navigation Aid (VOR/DME)
ND – Navigation Display
NW – Nose Wheel

OBRM – On Board Replaceable Module
OFF/R – Off Reset
OFST – Offset
O/P – Output
OPP – Opposite
OPT – Optimum
OUTB – Outboard
OUTR – Outer
OVBD – Overboard
OVSPD – Overspeed

P-ALT – Profile Altitude
pb – Push Button
PBD – Place/Bearing/Distance Waypoint
PBX – Place-Bearing/Place-Bearing Waypoint
PC – Pack Controller
P-CLB – Profile Climb
P-DES – Profile Descent
PDU – Pilot Display Unit
PFD – Primary Flight Display
PHC – Probe Heat Computer
P-MACH – Profile Mach
POB – Pressure Off Brake
PPOS – Present Position
P-SPEED – Profile Speed
PPU – Position Pick-off Unit
PR – Pressure
PRED – Prediction
PROC – Procedure
PROC T – Procedure Turn
PROF – Profile
PROTEC – Protection
PRT – Printer
PT – Point
PTU – Power Transfer Unit

QRH – Quick Reference Handbook
QT – Quart

R – Right, Red
RACC – Rotor Active Clearance Control
RAT – Ram Air Turbine
RCDR – Recorder
RCH – Small unit of measurement
RCL – Recall
RCVR – Receiver
R/I – Radio/Inertial
RLSK – Right Line Select Key
RMP – Radio Management Panel
RNG – Range
RNP – Required Navigational Performance
RPTG – Repeating
RQRD – Required
RSV – Reserves
RTOW – Regulatory TakeOff Weight

S – Slat Retraction Speed, South
SC – Single Chime
S/C – Step Climb
SD – System Display
sel – Selector
STAT INV – Static Inverter
S/D – Step Descent
SDAC – System Data Acquisition Concentrator
SDCU – Smoke Detection Control Unit
SEC – Spoiler Elevator Computer
SFCC – Slat Flap Control Computer
SLT – Slat
SPD LIM – Speed Limit
SPLR – Spoiler
SRS – Speed Reference System
STEER – Steering
STS – Status
sw – Switch
SWTG – Switching
SYNC – Synchronize

T – Temperature
TGT – Target
THR – Thrust
THS – Trimmable Horizontal Stabilizer
TK – Tank, Track Angle
TKE – Track Angle Error
TMR – Timer
TLA – Thrust Lever Angle
TOGW – TakeOff Gross Weight
TOW – TakeOff Weight
T-P – Turn Point
T-R – Transmitter-Receiver
TROPO – Tropopause
TRU – Transformer Rectifier Unit
TTG – Time To Go

UASS – Unofficial Airbus Study Site
UFD – Unit Fault Data
ULB – Underwater Locator Beacon
UNLK – Unlock
UTC – Universal Coordinated Time

VBV – Variable Bypass Valve
VC Calibrated Airspeed
V/DEV – Vertical Deviation
VEL – Velocity
VFE – Max Flaps Extended Speed
VFEN – VFE Next
VM – Maneuvering Speed
VMIN – Minimum Operating Speed
VNAV – Vertical Navigation
VOR-D – VOR-DME
VSC – Vacuum System Controller
VSV – Variable Stator Vane

W – White, West, Weight
WAI – Wing Anti-Ice
WBC – Weight and Balance Computer
WHC – Window Heat Computer
WTB – Wing Tip Brake
WXR – Weather Radar

XCVR – Transceiver
XFR – Transfer

Y – Yellow

ZC – Zone Controller
ZFCG – Zero Fuel Center of Gravity