Topic Author
Posts: 3936
Joined: Fri Jul 13, 2001 5:20 pm

Glossary For

Tue Feb 04, 2003 6:04 pm

Hi people,

a few days back I started a topic in the Site Related forum.
Please read about it here:

As you can see, Hepkat wanted us to collect as many acronyms as possible.
So tech's., pilots, fuelers, F/A's etc. etc, give me what you got!  Smile

I start:

FMS:.......................Flight Management System.
ATC........................Air Traffic Control
APU........................Air auxiliary Unit

Aim for the sky.

When in doubt, flat out!
Posts: 2613
Joined: Sun Jan 30, 2000 8:11 pm

RE: Glossary For

Tue Feb 04, 2003 6:25 pm

My god, a glossary of acronyms could go on forever, but if you really want some more:

TCAS.....Traffic alert and Collision Avoidance System
(E)ADI....(Electronic) Attitude Direction Indicator
(E)HSI....(Electronic) Horizontal Situation Indicator
(I)VSI.....(Instantaneous) Vertical Speed Indicator
EICAS.....Engine Indication and Crew Alerting System
FMC.......Flight Management Computer (Boeings...)
FMGS.....Flight Management and Guidance System (Airbus...)
MCP.......Mode Control Panel
RAT.......Ram Air Turbine
ADG.......Air Driven Generator
TMC.......Thrust Management Computer
EEC.......Electronic Engine Control
FCC.......Flight Control Computer
ADC.......Air Data Computer
IRS........Inertial Reference System
INS........Inertial Navigation System
IRU........Inertial Reference Unit
GPS.......Global Positioning System
(M)CDU...(Multifunction) Control Display Unit

Any more??
I used to love the smell of Jet-A in the morning...
Topic Author
Posts: 3936
Joined: Fri Jul 13, 2001 5:20 pm

RE: Glossary For

Tue Feb 04, 2003 6:45 pm

Yes it might be a long list,
but I think alot of members will benefit from it. Me for ex.  Smile

Aim for the sky.
When in doubt, flat out!
Topic Author
Posts: 3936
Joined: Fri Jul 13, 2001 5:20 pm

RE: Glossary For

Tue Feb 04, 2003 6:47 pm


I come up with new things all time, but I will stop for a while after this one so it don't become one acronym per post.

ILS...Instrument Landing System.

Aim for the sky.
When in doubt, flat out!
Posts: 361
Joined: Thu Oct 03, 2002 1:15 am

RE: Glossary For

Tue Feb 04, 2003 9:24 pm

GPWS: Ground Proximity Warning System
RTO: Rejected Take Off
Posts: 1440
Joined: Mon Mar 05, 2001 10:42 pm

RE: Glossary For

Tue Feb 04, 2003 9:26 pm

VASI - Visual Approach Slope Indicator
PAPI - Precision Approach Path Indicator
DME - Distance Measuring Equipment
ETOPS - Extended Twin (engined) OPerationS
FIR - Flight Information Region (UK is split into 2)
MATZ - Military Air Traffic Zone
FIS - Flight Information Service
VFR - Visual Flight Rules
APU - Auxilliary Power Unit
PPL - Private Pilot Licence
IMC - Instrument Meteriological Conditions
IR - Instrument Rating
CPL - Commercial Pilot Licence (CPL(h) = cpl helicopters)
ATPL - Air Transport Pilot Licence

English First, British Second, european Never!
Posts: 2037
Joined: Fri Mar 15, 2002 12:34 am

RE: Glossary For

Tue Feb 04, 2003 9:46 pm

Yes, this list is going to be big......

Some of the enclosed may not be relevant and a lot of them are military systems but they do come up occasionally.


AAR Air-to-Air Refuelling
ABD Aircraft Baseline Definition (Airbus Industrie Standard)
ACARS Aircraft Communications Addressing and Reporting System
ACC Automatic Code Change
ACO Airspace Co-ordination Order
ACP Audio Control Panel
ADF Automatic Direction Finder
ADIRS Air Data Inertial Reference System
ADIRU Air Data Inertial Reference Unit
AM Amplitude Modulation
AMPS Air Mission Planning System
AMU Audio Management Unit
ARINC Aeronautical Radio Inc.
AT Air Transport (e.g. Freight, Passenger)
ATC Air Traffic Control
ATO Air Tasking Order
BAC Blue Aircraft Configuration
BC Bus Controller
BFO Beat Frequency Oscillator
BIT Built In Test
BITE Built In Test Equipment
BS British Standard
CBIT Continuous Built in Test
CCP Communications Control Panel
CDNU Control and Display Navigation Unit
CESG Communications Electronics Security Group
CIDS Cabin Intercom Distribution System
CMC Centralised Maintenance Computer
CMS Central Maintenance System
COMPLAN Communications Planning
COMSEC Communications Security
CRPA Controlled Reception Pattern Antenna
CVR Cockpit Voice Recorder
DAFIF Digital Aeronautic Flight Information File
DAS Defensive Aids Suite / Defensive Aids System
DB Decibels
DEF STAN Defence Standard (BS)
DF Direction Finder
DLIP Data link Interface Protocol
DMC Display Management Computer
DME Distance Measuring Equipment
ECCM Electronic Counter Counter Measures
EMC Electro-Magnetic Compatibility
EMI Electro-Magnetic Interference
EPM Electronic Protective Measure
EUROCAE European Organisation for Civil Aviation Equipment
FDR Flight Data Recorder
FM Frequency Modulation
FMGEC Flight Management Guidance and Envelope Computer
FMS Flight Management Systems
FSTA Future Strategic Tanker Aircraft
GAC Green Aircraft Configuration
GMPS Ground Mission Planning System
GPS Global Positioning System
GRIB Gridded Binary Files
HF High Frequency / Human Factors
HMI Human Machine Interface
Hz Hertz
IBIT Initiated Built in Test
ICAO International Civil Aviation Organisation
ICD Interface Control Document
ICP Interactive Control Panels
IFF Identification Friend or Foe
ILS Instrumental Landing System
JAA Joint Aviation Authority
JAR Joint Aviation Requirement
Kbps Kilo bits per seconds
KHz Kilo Hertz
KY100 US Wide/Narrow Band COMSEC device also known as AIRTERM
LCD Liquid Cristal Display
LRU Line Replaceable Unit
MAC Military Aircraft Configuration
MAMS Military Avionics and Mission System
MC Mission Console
MFD Multi Function Display
MHz Mega Hertz
MIDS Multifunctional Information Distribution System
MIDS LVT MIDS Low Volume Terminal
MIL-STD US Military Standard
MPS Mission Planning System
MSO Mission Systems Operator
MSPU Mission System Processor Unit
MTU Main Terminal Unit
NATO North Atlantic Treaty Organisation
NM Nautical Mile
NSN NATO Stock Number
OTAR Over the Air Re-keying
PBIT Power up Built in Test
PFM Pre-Flight Message
PIDD Platform Implementation Difference Document or
Prime Item Description Document
PLD Portable Load Device
PPLI Precise Position Location Indicator
PPS Precise Positioning System
PSQS Performance and Safety Qualification Statement
PTT Press to Talk
RAF Royal Air Force
RF Radio Frequency
RMP Radio Management Panel
RORO Roll-on–Roll-Off
RT Remote Terminal
RTCA Requirements and Technical Concepts for Aviation
RTCM Requirements and Technical Concepts for Military
SATCOM Satellite Communication
SCCS Secure Communication Control System
SD Systems Display
SELCAL Selective Calling
SIFF Successor IFF
SPINS Special Instructions
STANAG NATO Standard series
STC Supplementary Type Certification
TACAN Tactical Air Control and Navigation
TAF Terminal Area / Aerodrome Forecast
TBA To Be Advised
TBD To Be Defined
TBM Tracker Ball Marker
TCAS Traffic Collision Avoidance System
TDMA Time Division Multiple Access
TOD Time of Day
TX Transmitter
UHF Ultra High Frequency
US United States
V/UHF Very/Ultra High Frequency
VCRI Verification Cross Reference Index
VDR Very High Frequency Data Radio
VOR Very High Frequency Omni-Range
VTAC VHF Tactical Airborne Communications
WOD Word of Day
Topic Author
Posts: 3936
Joined: Fri Jul 13, 2001 5:20 pm

RE: Glossary For

Wed Feb 05, 2003 12:47 am

Please try not to post an acronomy twise. I will copy this later and send it, so if we can keep it to no "double post" I think it would help the crew.

Aim for the sky.
When in doubt, flat out!
Posts: 1319
Joined: Wed Jul 05, 2000 11:37 am

RE: Glossary For

Wed Feb 05, 2003 2:02 am

I tried this a long time ago, hoping one of the moderators would have the presence of mind to post it as a permanent link.

Boeing Acronyms Reference
A/C Air Conditioning
A/C Aircraft
A/R Altitude Rate
ACARS ARINC Communications Addressing and Reporting System
ACE Actuator Control Electronics
ACESS Advance Cabin Entertainment and Service System
ACM Air Cycle Machine
ACMP Alternating Current Motor Pump (See also ACMP)
ACMS Airplane Conditioning Monitoring System
ACP Audio Control Panel
ADF Automatic Direction Finder
ADI Attitude Director Indicator
ADIRS Air Data Inertial Reference System
ADIRU Air Data Inertial Reference Unit
ADL Airborne Data Loader
ADM Air Data Module
ADP Air Driven Pump
ADRS Address
ADS Air Data Systems
ADU Air Drive Unit
AEM Audio Entertainment Multiplexer
AFDC Air Flight Data Control
AFDS Autopilot Flight Director System
AFL Air Flow
AIDS Airborne Integrated Data System
AIMS Airplane Information Management System
AMU Audio Management Unit
ANCMT Announcement
ANCPT Anticipate
ANCPTR Anticipator
ANS Ambient Nose Sensor
ANTI-COLL Anti-Collision
AOA Angle of Attack
AOC Air/Oil Cooler
APB Auxiliary Power Breaker
APID Airplane Identification
APU Auxiliary Power Unit
ARINC Aeronautical Radio Incorporated
ASA Autoland Status Annunciator
ASCPC Air Supply Cabin Pressure Controller
ASCTS Air Supply Control and Test System
ASCTU Air Supply Control and Test Unit
ASP Audio Select Panel
AVM Airborne Vibration Monitor
BDY BLK Burndy Block
BFE Buyer Furnished Equipment
BPCU Bus Power Control Unit
BSCU Brake System Control Unit
BST Boost
BTB Bus Tie Breaker
BTLCS Brake Torque Limiting Control System
BTMU Brake Temperature Monitor Unit
C Cold
CACTS Cabin Air Conditioning & Temperature Control System
CADS Central Air Data System
CALIB Calibrator
CAP Capture
CAP Contact Authorized Proposal
CAPC Cabin Area Control Panel
CAPT Captain
CCA Central Control Actuator
CCL Cargo Control Logic
CCM Cargo Control Module
CCU Cargo Control Unit
CDU Control Display Unit
CFDS Centralized Fault Detection System
CFE Customer Furnished Equipment
CHKPT Checkpoint
CHSP Course Heading Select Panel
CIC Cabin Interphone Controller
CIWS Central Instrument Warning System
CMC Central Maintenance Computer
CMM Component Maintenance Manual
CMS Cabin Management System
COC* Customer Originated Change
COF MKR Coffee Maker
COLL Collision
COM/NAV Communication/Navigation
COR Corrector
CP Control Panel
CPCS Cabin Pressure Control System
CRKG Cranking
CSB Compressor Stability Bleed
CSMU Cabin System Management Unit
CT Control Transformer
CTC Cabin Temperature Controller
CTS Cabin Temperature Selector
CTS Conversational Terminal System
CVR Cockpit Voice Recorder
DAA Digital/Analog Adapter
DADC Digital Air Data Computer
DAR Digital Aids Recorder
DED Dead Ended Shield
DEL Diagram Equipment List
DFCS Digital Flight Control System
DFDAU Digital Flight Data Acquisition Unit
DFDR Digital Flight Data Recorder
DH Decision Height
DIU Digital Interface Unit
DMU Data Management Unit
DP Differential Protection
DPA Digital Pre-Assembly
DPCT Differential Protective Current Transformer
DPLY Deploy
DSP Display Select Panel
E/E Electrical/Electronics
EADI Electronic Attitude Director Indicator
ECS Environmental Control System
EDIU Engine Data Interface Unit
EDP Engine Driven Pump
EEC Electronic Engine Control (Unit)
EFIS Electronic Flight Instrument System
EHSI Electronic Horizontal Situation Indicator
EICAS Engine Indicating and Crew Alerting System
EIU EFIS/EICAS Interface Unit
ELCCR* Electrical Liaison Change Commitment Record
ELCU Electrical Load Control Unit
ELMS Electrical Load Management System
EMP Electric Motor Pump (See also ACMP)
ENTMT Entertainment
ENWY Entryway
EPR Engine Pressure Ratio
EPRL Engine Pressure Ratio Limit
ESCC Electrical Supply and Control Center
ESNTL Essential
ESS Essential
ETC Electronic Temperature Control
ETOPS Extended Twin (Engine) Operations
EXCHR Exchanger
EXTD Extend
F/D Flight Director
F/E Flight Engineer
F/F Fuel Flow
F/O First Officer
FADEC Full Authority Digital Engine Control
FAFC Full Authority Fuel Control
FAR Federal Aviation Regulations
FBW Fly-by-Wire
FCC Flight Control Computer
FCU Flap Control Unit
FDAU Flight Data Acquisition Unit
FLMTR Flowmeter
FMC Flight Management Computer
FMCS Flight Management Computer System
FMU Fuel Metering Unit
FMV Fuel Metering Valve
FOC Fuel/Oil Cooler
FQIS Fuel Quantity Indication System
FQPU Fuel Quantity Processor Unit
FSEU Flap/Slat Electronics Unit
GCB Generator Circuit Breaker
GCR Generator Control Relay
GCU Generator Control Unit
GPWS Ground Proximity Warning System
GS Glide Slope
GSB Ground Service Bus
GSPR Gasper
H Hot
HLCU High Lift Control Unit
HMU Hydromechanical Unit
HND Hand
HPC High Pressure Compressor (N2 Rotor)
HPSOV High Pressure Shutoff Valve
HPT High Pressure Turbine
HYDIM Hydraulic Interface Module
HYQUIM Hydraulic Quantity Interface Module
HZ Hertz (Cycles Per Second)
IBIT Initiated Built In Test
IBVSU Instrument Bus Voltage Sense Unit
IDG Integrated Drive Generator
IDS Integrated Display System
ILES Inboard Leading Edge Station
INS Inertial Navigation System
INTC Interconnect
IOEU Inboard Overhead Electronics Unit
IPC Illustrated Parts Catalog
IPL Illustrated Parts List
IRS Inertial Reference System
JPR Jumper
KHZ Kilohertz
KVA Kilovolt Ampere
LGHTNG Lightning
LMP Lamp
LO Lock Out
LP Lightning Protector
LPT Low Pressure Turbine
LRRA Low Range Radio Altimeter
LRU Line Replaceable Unit
LSDA Low Speed Digital To Analog
M Mach
M MUX Main Multiplexer
MAI Multiplexer Action Item
MAWEA Modularized Avionics and Warning Electronics Assy
MC* Master Change
MCDP Maintenance Control and Display Panel
MCDU Multipurpose Control and Display Unit
MCP Mode Control Panel
MGSCU Main Gear Steering Control Unit
MHRS Magnetic Heading Reference System
MHZ Megahertz
MIDU Multipurpose Interactive Display Unit
MKR BCN Marker Beacon
MLS Microwave Landing System
MNFST Manifest
MOSFET Metallic Oxide Semiconductor Field Effect Transistor
MR* Modification Revision
MTCHG Matching
MTG Muting
NBR Number
ND Navigation Display
NGT Night
OAP Output Audio Processor
OFCR Officer
OFL Outflow
OMS Outboard Maintenance System
OOEU Outboard Overhead Electronics Unit
OPAS Overhead Panel ARINC 629 System
OPBC Overhead Panel Bus Controller
OVDR Overdoor
OVFL Overfill
OVHT Overheat
OVWG Overwing
PA Passenger Address
PA/CI Passenger Address/Cabin Interphone
PCH Patch
PCT Percent
PDU Power Drive Unit
PES Passenger Entertainment System
PEPC Primary External Power Contactor
PFC Primary Flight Computer
PFD Primary Flight Display
PFIDS Passenger Flight Information Display System
PIS Passenger Information Sign
PKG Parking
PMA Permanent Magnet Alternator
PMG Permanent Magnet Generator
PMS Performance Management System
POR Point of Regulation
PRCLR Precooler
PROT Protection
PRR* Production Revision Record
PRSOV Pressure Regulating Shut-Off Valve
PSA Power Supply Assembly
PSEU Proximity Switch Electronics Unit
PSU Passenger Service Unit
PTT Press To Talk/Push To Talk
PVD Paravisual Display
PYL Pylon
QAR Quick Access Recorder
QDT Quadrantal
RAT Ram Air Turbine
RDMI Radio Distance Magnetic Indicator
RDP Roller Drive Power
RDU Remote Display Unit
REP Repellent
RFLNG Refueling
RGLTN Regulation
RMCP Radio Management Control Panel
RR* Rapid Revision
RST Reset
RSV Reserve
RTC Rudder Trim Control
RVSG Reversing
RVT Rotational Variable Transformer
SAARU Standby Attitude/Air Data Reference Unit
SAT Static Air Temperature
SATCOM Satellite Communications
SB* Service Bulletin
SCF System Cardfile
SCM Spoiler Control Module
SCU Seat Control Unit
SDI Source Destination Identifier
SEB Seat Electronics Box
SEB/ST Seat Electronics Box With Self Test
SEI Standby Engine Instruments
SEU Seat Electronics Unit
SHVR Shaver
SL* Service Letter
SN Sign
SO Shut-off
SO Standard Option
SPL Splice List
SRM Stabilizer Trim/Rudder Ratio Module
SUP-NUM Supernumerary
SVU Seat Video Unit
SWDL Software Data Loader
SWL Sidewall
T/M Torque Motor
T/R Thrust Reverser
TAI Thermal Anti-Ice
TAT Total Air Temperature
TBV Turbine Bypass Valve
TCA Turbine Cooling Air
TCAS Traffic Collision Avoidance System
TCC Turbine Case Cooling
TDL Time Delay Logic
TDX Torque Differential Transmitter
TERM BLK Terminal Block
TGT Turbine Gas Temperature
THSHD, THR Threshold
TL Tilt
TLA Thrust Lever Angle
TMC Thrust Management Computer
TMS Thrust Management System
TO Turn-off
TPIS Tire Pressure Indication System
TPMU Tire Pressure Monitor Unit
TR Torque Receiver
TR Transformer Rectifier
TRA Thrust Resolver Angle
TRC Thermatic Rotor Control
TRU Transformer Rectifier Unit
TS Terminal Strip
TTG Time To Go
TURB Turbulence
TX Torque Transmitter
UNLK Unlock
VBV Variable Bypass Valve
VCC Video Control Center
VES Video Entertainment System
VGH Velocity, Gravity, Height
VIGV Variable Inlet Guide Vane
VLV Valve
VSI Vertical Speed Indicator
VSV Variable Stator Vane
VTY Vanity
W/A Wrap Around
WAI Wing Anti-Ice
WBA Wire Bundle Assembly
WEU Warning Electronic Unit
WF Fuel Flow (Weight of Fuel)
WF or wf Weight of Fuel
WHCU Window Heat Control Unit
WIU Wire Integration Unit
WXR Weather Radar
XFD Crossfeed
XNT Transient
XPC External Power Contactor
XPNDR Transponder
ZMU Zone Management Unit

Airbus List

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


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
VM - Maneuvering Speed
VMIN - Minimum Operating Speed
VNAV - Vertical Navigation
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
Posts: 6673
Joined: Wed Mar 22, 2000 12:26 pm

RE: Glossary For

Wed Feb 05, 2003 9:12 am

Common abbreviations/slang --
bagsmasher -- baggage handler
cattle car -- slang for a single-class airliner or airline with a single class cabin
F/A -- flight attendant
F/E -- flight engineer
F/O -- first officer; "co-pilot"
left seat -- pilot in charge; top ranked pilot flying aircraft
pax -- passengers
PIC -- pilot in charge
ramp rat -- ground crewmember
right seat -- first officer; "co-pilot"
Z = UTC; Universal Coordinated Time; Greenwich Mean Time (all mean the same)

Phonetic Alphabet
A= Alpha (Alfa)
B = Bravo
C = Charlie
D = Delta
E = Echo
F = Foxtrot (Fox)
G = Golf
H = Hotel
I = India
J = Juliet
K = Kilo
L = Lima
M = Mike
N = November
O = Oscar
P = Papa
R = Romeo
S = Sierra
T = Tango
U = Uniform
V = Victor
W = Whiskey (wiskey)
X = X-ray
Y = Yankee
Z = Zulu
Up, up and away!
Posts: 532
Joined: Fri Oct 26, 2001 7:09 am

RE: Glossary For

Wed Feb 05, 2003 9:34 am

And now the billion dollar question: why do we need so many acronyms?!
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RE: Glossary For

Wed Feb 05, 2003 10:25 am


Old saying at the FAA (Federal Aviation Administration, so we can add it  Big grin )

"If it doesn't work, rename it. If that doesn't help, the new name isn't long enough."

Those long names are why we have some many acronyms.

BTW: I think we should note company and country specfic acronyms.
At worst, you screw up and die.
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American 767
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RE: Glossary For

Wed Feb 05, 2003 10:18 pm

I've got a few more for you:

A&P: Airframe & Powerplant
CAVOK: Ceiling And Visibility OK
CRT: Cathodic Ray Tube
FL: Flight Level
GPWS: Ground Proximity Warning System
LCD: Liquid Crystal Display
MLW: Maximum Landing Weight
MTOW: Maximum Take Off Weight
TOGA: Take Off Go Around
ZFW: Zero Fuel Weight

Ben Soriano
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Ben Soriano
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RE: Glossary For

Thu Feb 06, 2003 1:56 am

ASU air starter unit
another one for GMT = HORTU horaire temps universel
scd = side cargo dooe
ncd = nose cargo door
loadsheets also uses lots of them such as
lizfw = loaded index zero fuel weight,
dli = dead load index
mactow = % mac at take off weight
mac= mean aerodynamic chord
and many others

[Edited 2003-02-05 17:57:15]
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RE: Glossary For

Thu Feb 06, 2003 4:07 am

LAHSO: Land And Hold Short Operations
TDZE: Touchdown Zone Elevation
TCH: Threshold Crossing Height
REIL: Runway End Identifier Lights
PCL: Pilot Controlled Lighting
CTAF: Common Traffic Advisory Frequency

I'll put more if I think of em'

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RE: Glossary For

Thu Feb 06, 2003 8:00 am

Question (which requires an answer before I start tapping away): Are you interested in military TLAs (Three Letter Acronyms... oops, there we go again  Wink/being sarcastic) or only civil? Because we generate about 30 new ones per day... concept studies, you know...

Also, are we allowed slang, such as SNAFU, FUBAR and REMF?

The definition of a 'Pessimist': an Optimist with experience...
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RE: Glossary For

Thu Feb 06, 2003 8:10 am

Up, up and away!
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RE: Glossary For

Thu Feb 06, 2003 12:45 pm

CFIT - Controlled Flight Into Terrain
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RE: Glossary For

Thu Feb 06, 2003 5:41 pm

I think we can skip the slang acronyms to try, hm, to keep down the amount a little.
I will soon take this list and sort it from A-Z.
But I do have a question about one acronym.
STOL.......? Short Take Off....something, or?

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When in doubt, flat out!
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RE: Glossary For

Thu Feb 06, 2003 7:07 pm

STOL, the same as in VSTOL - Vertical / Short Take Off / Landing
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RE: Glossary For

Fri Feb 07, 2003 7:23 am

SIDA Security Identification Display Area
AOA Airport Operations Area
ARFF Airport Rescue and Fire Fighting
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RE: Glossary For

Fri Feb 07, 2003 1:22 pm

Here are some newer (and a few older) ones:

EGPWS - Enhanced Ground Proximity Warning System
TAWS - Terrain Alerting and Warning System
T2CAS - Terrain and Traffic Collision Avoidance System
CPR - Changed Product Rule
GNSS - Global Navigation Satellite System
WAAS - Wide Area Augmentation System
LAAS - Local Area Augmentation System
FDE - Fault Detection and Exclusion
RAIM - Receiver Autonomous Integrity Monitor
RVSM - Reduced Vertical Separation Minima
MNPS - Minimum Navigation Performance Specifications
TSO - Technical Standard Order
APR - Automatic Power Reserve
ATS - AutoThrottle System
HGS - Heads-Up Guidance System

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RE: Glossary For

Fri Feb 07, 2003 2:27 pm

VTOL - Vertical Take-Off and Landing
STOL - Short Take-Off and Landing
LTOL - (In other words, the A340-300 Big grin)

ATIS - Automated Terminal Info___? Service?
FL - Flight Level ###
FADEC - Full Authority Digital Engine Control (??)
HUD- Heads up display (??)

American 767
In response to your abbreviation "CRT", I have also added this:
LCD - Liquid Crystal Display

Isn't APU "Auxillary Power Unit" or did I overhear it from someone else who gave the wrong answer? (Just asking)

Cdfmxtech has pretty much listed everything in the world of aviation abbreviations.

(gotAIRBUS?) - (Got Commonality?) - (Have A Nice Flight!)
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RE: Glossary For

Fri Feb 07, 2003 6:26 pm

Yes your correct. I wrote it wrong. Thanks for correction.

Aim for the sky.
When in doubt, flat out!
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RE: Glossary For

Fri Feb 07, 2003 6:36 pm

Ok guys,
due to that Cdfmxtech made his list in alphabetic order, I will take his list and add your other guys acronyms that are not on that one.
Thanks for you help. Much appreciated!  Smile

Aim for the sky.
When in doubt, flat out!
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RE: Glossary For

Sun Feb 09, 2003 1:30 am

Sudden, are you sending the list to Hepkat?

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RE: Glossary For

Mon Feb 10, 2003 6:01 pm

No I will be sending it to the general admin. address, as Hepkat requested.

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When in doubt, flat out!

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