| 3D |
Three Dimensional (Lat, Long, Alt) |
| 4D |
Four Dimensional (Lat, Long, Alt, Time) |
| A |
Amber |
| A.ICE |
Anti-icing |
| A/BRK |
Autobrake |
| A/C |
Aircraft |
| A/COLL |
Anti-Collision |
| A/D |
Analog/Digital |
| A/DC |
Analog-to-Digital Converter |
| A/G |
Air to Ground |
| A/L |
Airline |
| A/N |
Alphanumeric |
| A/S |
Airspeed |
| A/SKID |
Anti-Skid |
| A/STAB |
Auto Stabilizer |
| A/THR |
Autothrust |
| A/XFMR |
Autotransformer |
| AAC |
Airline Administrative Communications |
| AAP |
Additional Attendant Panel |
| AAP |
Aft Attendant Panel |
| AAR |
Air-to-Air Refueling |
| ABCM |
Alternate Brake Control Manifold |
| ABCU |
Alternate Braking Control Unit |
| ABD |
Airbus Directive and Procedure |
| ABDC |
Avionics Broadcast Data Collector |
| ABM |
APU Build-up Manual |
| ABN |
Abnormal |
| ABNORM |
Abnormal |
| ABPM |
Avionics Bare Processing Module |
| ABRN |
Airborne |
| ABS |
Autobrake System |
| ABSELV |
Alternate Brake Selector Valve |
| ABSORB |
Absorber |
| ABV |
Above |
| AC |
Aircraft Characteristics - Airport and Maintenance Planning |
| AC |
Alternating Current |
| ACARS |
Aircraft Communication Addressing and Reporting System |
| ACAU |
ARINC600 Connecting Assembly Unit |
| ACC |
Active Clearance Control |
| ACC |
Air vehicle Corrosion Control |
| ACCEL |
Acceleration/Accelerate |
| ACCLRM |
Accelerometer |
| ACCU |
Accumulator |
| ACCUR |
Accuracy |
| ACD |
Additional Control Device |
| ACD |
Aircraft Control Domain |
| ACFT |
Aircraft |
| ACGS |
Aircraft GSM Server |
| ACI |
Avionics Communication Interface |
| ACK |
Acknowledge |
| ACM |
Air Cycle Machine |
| ACM |
Airspace Control Means |
| ACMF |
Aircraft Condition Monitoring Function |
| ACMM |
Abbreviated Component Maintenance Manual |
| ACMP |
Airframe Condition Monitoring Procedure |
| ACMR |
Aircraft Configuration Management Rules |
| ACMS |
Aircraft Condition Monitoring System |
| ACMS-RT |
ACMS-Real Time |
| ACMS-SA |
ACMS-Server Application |
| ACN |
Aircraft Classification Number |
| ACO |
Automatic Call Out |
| ACOC |
Air Cooled Oil Cooler |
| ACP |
Area Call Panel |
| ACP |
Audio Control Panel |
| ACQ |
Acquire |
| ACQN |
Acquisition |
| ACR |
Avionics Communication Router |
| ACRIF |
ACR Instrumentation Function |
| ACRS |
Aircraft Communication Router System |
| ACRS |
Avionics Communication Routing System |
| ACS |
Air Conditioning System |
| ACSC |
Air Conditioning System Controller |
| ACT |
Active |
| ACT |
Additional Center Tank |
| ACT |
AIRBUS COMPETENCE TRAINING |
| ACTG |
Actuating |
| ACTI |
Assembly Critical Item |
| ACTIV |
Active |
| ACTR |
Actuator |
| ACTUAL |
Aircraft Configuration of Tracked Units at Aircraft Level |
| ACTVN |
Activation |
| ACTVT |
Activate |
| ACU |
Air Cooling Unit |
| ACU |
Antenna Control Unit |
| ACU |
Alpha Call-Up |
| ACUTE |
Airbus Cockpit Universal Thrust Emulator |
| AD |
Airworthiness Directive |
| AD |
Aerial Delivery |
| ADB |
Airport DataBase |
| ADB |
Area Distribution Box |
| ADC |
Air Data Computer |
| ADC |
Aircraft Data Collection |
| ADCN |
Avionics Data Communication Network |
| ADD |
Addition |
| ADD |
Additional |
| ADF |
Automatic Direction Finder |
| ADF |
As-Defined |
| ADFR |
Automatic Deployable Flight Recorder |
| ADG |
Air Driven Generator |
| ADGB |
Active Differential Gearbox |
| ADHF |
Adaptive Dropped Hinge Flap |
| ADI |
Attitude Director Indicator |
| ADIRS |
Air Data/Inertial Reference System |
| ADIRU |
Air Data/Inertial Reference Unit |
| ADIS |
AFDX and Digital Injection System |
| ADL |
Airborne Data Loader |
| ADLU |
Airborne Data Loading Unit |
| ADM |
Air Data Module |
| ADMZ |
Aircraft DeMilitarized Zone |
| ADPM |
Aircraft Deactivation Procedures Manual |
| ADPTR |
Adapter |
| ADR |
Air Data Reference |
| ADS |
Air Data System |
| ADS |
Automatic Dependent Surveillance |
| ADS |
Aerial Delivery System |
| ADS |
Aircraft maintenance Documentation System |
| ADS-B |
Automatic Dependent Surveillance-Broadcast |
| ADS-C |
Automatic Dependent Surveillance-Contract |
| ADSM |
Avionics Data Storage Module |
| ADU |
Area Distribution Unit |
| ADV |
Advisory |
| AECM |
Alternate Extension Control Module |
| AES |
Aircraft Earth Station |
| AESS |
Aircraft Environment Surveillance System |
| AESU |
Aircraft Environment Surveillance Unit |
| AEU |
Audio Electronic Unit |
| AEVC |
Avionics Equipment Ventilation Computer |
| AF |
Audio Frequency |
| AFCD |
Aft Cargo Door |
| AFDX |
Avionics Full Duplex Switched Ethernet |
| AFECU |
Automatic Fire Extinguishing Control Unit |
| AFFECTD |
Affected |
| AFFIRM |
Affirmative |
| AFI |
Air Vehicle Fault Isolation |
| AFI |
Aircraft Fault Isolation |
| AFL |
Auto Flush |
| AFM |
Airplane Flight Manual |
| AFMC |
Auxiliary Fuel Management Computer |
| AFMR |
Airframer |
| AFN |
ATS Facilities Notification |
| AFR |
Aircraft Fault Reporting |
| AFRP |
Aramid Fiber Reinforced Plastic |
| AFRS |
AirFRamer Shell |
| AFS |
Automatic Flight System |
| AFTR |
After |
| AGB |
Accessory Gearbox |
| AGB |
Angle Gearbox |
| AGC |
APU Generator Contactor |
| AGC |
Automatic Gain Control |
| AGE |
Aircraft Ground Equipment |
| AGL |
Above Ground Level |
| AGLC |
APU Generator Line Contactor |
| AGP |
Alternate Gauging Processor |
| AGS |
Aircraft GSM Server |
| AGS |
Air Generation System |
| AGU |
Air Generation Unit |
| AGW |
Actual Gross Weight |
| AIBU |
Advanced Illumination Ballast Unit |
| A-ICE |
Anti-Ice |
| AICF |
Anti Ice Control Function |
| AICS |
Anti Ice Control System |
| AICU |
Anti Ice Control Unit |
| AIDS |
Aircraft Integrated Data System |
| AIL |
Aileron |
| AIM |
Aircraft Integrated Maintenance |
| AIMDS |
Aircraft Integrated Monitoring and Diagnostic System |
| AIME |
Autonomous Integrity Monitored Extrapolation |
| AIMI |
Avionics Information Management Interface |
| AINS |
Aircraft Information Network System |
| AIP |
Attendant Indication Panel |
| AIPC |
Aircraft Illustrated Parts Catalog |
| AIPR |
Avionic Internal Parameter Requestor |
| AIR |
Aircraft Inspection Report |
| AIS |
Audio Integrated System |
| AISD |
Airline Information Services Domain |
| AIT |
Accident Information Transmission |
| AIU |
Aircraft Interface Unit |
| ALE |
Automatic Link Establishment |
| ALIGN |
Alignment |
| ALIGND |
Aligned |
| ALLWD |
Allowed |
| ALNA |
Airline Network Architecture |
| ALPHA |
Angle-of-Attack |
| ALS |
Airworthiness Limitation Section |
| ALSCU |
Auxiliary Level Sensing Control Unit |
| ALT |
Altitude |
| ALT REFF |
Alternate to a Retraction, Extension and/or Free Fall test |
| ALTM |
Altimeter |
| ALTN |
Alternate |
| ALTN |
Alternative |
| ALTU |
Annunciator Light Test Unit |
| AM |
Amplitude Modulation |
| AM |
Air vehicle Maintenance |
| AMAT |
Aircraft Multipurpose Access Terminal |
| AMB |
Ambient |
| AMD |
Aircraft Maintenance Description |
| AMDB |
Airport Mapping DataBase |
| AME |
Amplitude Modulation Equivalent |
| AMEX |
Avionics Message Exchanger |
| AMM |
Aircraft Maintenance Manual |
| AMP |
Aircraft Maintenance Procedure |
| AMPL |
Amplifier |
| AMS |
Air-ground Message Server |
| AMS |
Audio Management System |
| AMU |
Audio Management Unit |
| ANCU |
Anti-Noise Control Unit |
| ANDT |
Air vehicle Non-Destructive Testing |
| ANDT |
Aircraft Non Destructive Test |
| ANF |
Airport Navigation Function |
| ANI |
Analog Input |
| ANLG |
Analogic |
| ANN |
Annunciator |
| ANNCE |
Announce |
| ANNCMT |
Announcement |
| ANO |
Analog Output |
| ANS |
Anti-Noise System |
| ANSA |
At Nearest Suitable Airport |
| ANSI |
American National Standards Institute |
| ANSU |
Aircraft Network Server Unit |
| ANT |
Antenna |
| AOA |
Angle Of Attack |
| AOC |
Airline Operational Control |
| AOD |
Audio on Demand |
| AOG |
Aircraft On Ground |
| AOHE |
Air Oil Heat Exchanger |
| AOHX |
Air/Oil Heat Exchanger |
| AOM |
Aircraft Operating Manual |
| AOMT |
Airbus Onboard Maintenance Tool |
| AOT |
Alert Operators Transmission |
| AP |
Autopilot |
| AP/FD |
Autopilot/Flight Director |
| API |
Application Programming Interface |
| APLC |
Aircraft Power Line Conditioner |
| APM |
ARINC Processing Module |
| APM |
Airplane Personality Module |
| APP |
Appearance |
| APP |
Approach Control-Approach Control Office |
| APPL |
Application |
| APPR |
Approach |
| APPROX |
Approximately |
| APPU |
Asymmetry Position Pick Off Unit |
| APS |
Absolute Pressure Sensor |
| APS |
Avionics Printing Service |
| APS |
Antenna Power Supply |
| APT |
AIRBUS PILOT TRANSITION |
| APU |
Auxiliary Power Unit |
| APU AFE |
APU Automatic Fire Extinguishing Control Unit |
| APUNRV |
APU Non Return Valve |
| AR |
As Required |
| ARC |
Air Refueling Computer |
| ARFC |
Aircraft Rescue & Fire Fighting Chart |
| ARINC |
Aeronautical Radio Incorporated |
| ARM |
Aircraft Recovery Manual |
| ARN |
Aircraft Registration Number |
| ARP |
Aerospace Recommended Practice |
| ARPT |
Airport |
| ARTF |
Artificial |
| ARU |
Aircraft Router Unit |
| ARU |
Audio Reproducer Unit |
| ARV |
Alternate Refill Valve |
| ASA |
All Speed Aileron |
| ASA |
Audio and Sign Adapter |
| ASC |
APU Starter Contactor |
| ASCII |
American Standard Code for Information Interchange |
| ASCU |
Air Systems Control Unit |
| ASD |
Accelerate Stop Distance |
| ASD |
Air vehicle Schematic Diagram |
| ASD |
Aircraft Schematic Diagram |
| ASE |
Airborne Support Equipment |
| ASF |
Avionics Server Function |
| ASFC |
Avionics Server Function Cabinet |
| ASI |
Airspeed Indicator |
| ASIC |
Application Specific Integrated Circuits |
| ASLC |
ACD Security Log Collector |
| ASM |
Aircraft Schematics Manual |
| ASM |
Air Separation Module |
| ASN |
Aerospatiale Norme (Standard) |
| ASP |
Audio Selector Panel |
| ASPSU |
Autonomous Standby Power Supply Unit |
| ASR |
Air vehicle Structure and Repair |
| ASR |
Aircraft Structural Repair |
| ASS |
Aircraft Security System |
| ASSCU |
Aircraft Security System Control Unit |
| ASSY |
Assembly |
| ASU |
Attendant Service Unit |
| ASYM |
Asymmetric(al) |
| AT |
Autothrust |
| ATA |
Actual Time of Arrival |
| ATA |
Air Transport Association of America |
| ATC |
Air Traffic Control |
| ATCI |
Air Traffic Control and Information |
| ATCRB |
Air Traffic Control Radar Beacon |
| ATD |
Actual Time of Departure |
| ATE |
Automatic Test Equipment |
| ATI |
Air Transport Indicator |
| ATIMS |
Air Traffic and Information Management System |
| ATIS |
Automatic Terminal Information Service |
| ATLAS |
Abbreviated Test Language for Avionics Systems |
| ATM |
Air Traffic Management |
| ATN |
Aeronautical Telecommunications Network |
| ATQC |
Airbus Temporary Quick Change |
| ATR |
Austin Trumbull Radio |
| ATRCCS |
Automatic Turbine Rotor Clearance Control System |
| ATS |
Air Traffic Service |
| ATS |
Autothrottle System |
| ATS |
Air Turbine Starter |
| ATSAW |
Airborne Traffic Situational Awareness |
| ATSU |
Air Traffic Service Unit |
| ATT |
Attitude |
| ATTND |
Attendant |
| ATU |
AutoTransformer Unit |
| ATUC |
ATU Contactor |
| ATULC |
ATU Line Contactor |
| ATUPU |
ATU Protection Unit |
| AUTO |
Automatic |
| AUTOLAND |
Automatic Landing |
| AUW |
All-Up Weight |
| AUX |
Auxiliary |
| AVAIL |
Availability |
| AVAIL |
Available |
| AVIS |
Aircraft Virtual Insider System |
| AVM |
Avionics Video Module |
| AVNCS |
Avionics |
| AVS |
Avionics Ventilation System |
| AWD |
Air vehicle Wiring Diagram |
| AWD |
Aircraft Wiring Diagram |
| AWL |
Aircraft Wiring List |
| AWL |
Attendant Work Light |
| AWM |
Aircraft Wiring Manual |
| AWY |
Airway |
| AX |
Longitudinal Acceleration |
| AY |
Lateral Acceleration |
| AZ |
Azimuth |
| AZFW |
Actual Zero Fuel Weight |
| AZIM |
Azimuth |
| B |
Blue |
| B/C |
Business Class |
| BAC |
Battery to APU Contactor |
| BACS |
Brake and Antiskid Control System |
| BAF |
BITE Access Function |
| BAG |
Bandwidth Allocation Gap |
| BALDS |
Bleed Air Leakage Detection System |
| BARO |
Barometric |
| BAS |
Bleed Air System |
| BAT |
Battery |
| BATC |
Battery Contactor |
| BATLC |
Battery Line Contactor |
| BBAND |
Broadband |
| BCC |
Bleed Control Computer |
| BCD |
Binary Coded Decimal |
| BCDS |
BITE Centralized Data System |
| BCF |
Brake Cooling Fan |
| BCL |
Battery Charge Limiter |
| BCM |
Backup Control Module |
| BCN |
Beacon |
| BCRC |
Bulk Crew Rest Compartment |
| BCRU |
Battery Charge and Rectifier Unit |
| BCS |
Brake Control System |
| BCS |
Braking Control System |
| BCU |
Brake Control Unit |
| BCV |
Bleed Control Valve |
| BCVS |
Bulk Cargo Video System |
| BDC |
Bottom Dead Center |
| BFE |
Buyer Furnished Equipment |
| BFO |
Beat Frequency Oscillator |
| BGAN |
Broadband Global Area Network |
| BGM |
Boarding Music |
| BH |
Block Hours |
| BIOS |
Basic Input Output System |
| BITE |
Built-In Test Equipment |
| BIU |
BITE Interface Unit |
| BKFLW |
Backflow |
| BKUP |
Backup |
| BL |
Bleed |
| BLC |
BCRU Line Contactor |
| BLES |
Brake Life Extension System |
| BLG |
Body Landing Gear |
| BLK |
Black |
| BLK |
Block |
| BLMPS |
Bleed Manifold Pressure Sensor |
| BLOW |
Blower |
| BLRPS |
Bleed Regulated Pressure Sensor |
| BLST |
Ballast |
| BLV |
Bleed Valve |
| BLWG |
Blowing |
| BLWR |
Blower |
| BM |
Bronze Mesh |
| BMC |
Bleed Monitoring Computer |
| BMI |
BITE Monitoring Interface |
| BMPS |
Bleed Monitoring Pressure Sensor |
| BMU |
Battery Management Unit |
| BNDRY |
Boundary |
| BNR |
Binary |
| BOMU |
Bleed and Overheat Monitoring Unit |
| BOR |
Backup Oxygen Source |
| BOT |
Begin of Tape |
| BOT |
Bottom |
| BPPU |
Back-up Position Pick-Off Unit |
| BPRSOV |
Bleed Pressure Regulating Shut-off Valve |
| BPS |
Backup Power Supply |
| BPS |
Bleed Pressure Sensor |
| BPTU |
Brake Pedal Transmitter Unit |
| BRG |
Bearing |
| BRK |
Brake |
| BRKNG |
Braking |
| BRKR |
Breaker |
| BRKT |
Bracket |
| BRT |
Bright |
| BRT |
Brightness |
| BSCS |
Braking and Steering Control System |
| BSCU |
Braking and Steering Control Unit |
| BSU |
Beam Steering Unit |
| BTAC |
Bus Tie Alternating Contactor |
| BTAC |
Bus Tie AC Contactor |
| BTC |
Bus Tie Contactor |
| BTCC |
Bus Tie Continuous Contactor |
| BTCM |
Brake Temperature Compensation Module |
| BTDC |
Bus Tie DC Contactor |
| BTL |
Bottle |
| BTMS |
Brake Temperature Monitoring System |
| BTMU |
Brake Temperature Monitoring Unit |
| BTN |
Button |
| BTR |
Bus Tie Relay |
| BTS |
Base Transceiver Station |
| BTS |
Bleed Temperature Sensor |
| BTSTRP |
Buttstrap |
| BTV |
Brake to Vacate |
| BU |
Battery Unit |
| BUS |
Busbar |
| BUSS |
Back-Up Speed Scale |
| BWS |
Body Wheel Steering |
| BYDU |
Back-Up Yaw Damper Unit |
| BYP |
Bypass |
| C |
Celsius |
| C |
Centigrade |
| C |
Close |
| C |
Cyan |
| C/B |
Circuit Breaker |
| C/L |
Checklist |
| C/O |
Change Over |
| C/S |
Call Sign |
| CA |
Cable Assembly |
| CA/CRL |
Certification Authority/Certificate Revocation List |
| CAB |
Cabin |
| CaDoc |
Cabin Documentation Display |
| CAL |
Calibration |
| CAL |
Calibrated |
| CAM |
Cabin Assignment Module |
| CAMO |
Continuing Airworthiness Management Organisation |
| CAN |
Controller Area Network |
| CANC |
Cancellation |
| CANCD |
Cancelled |
| CAOA |
Corrected Angle Of Attack |
| CAOM |
Cabin Attendant Operating Manual |
| CAPT |
Captain |
| CARP |
Computed Air Release Point |
| CAS |
Calibrated Air Speed |
| CAS |
Cabin Attendant Seat |
| CAT |
Category |
| CATCH |
Complex Anomaly Tracking and Search |
| CAUT |
Caution |
| CAX |
Compartment Air Extraction |
| CBB |
Connexion By Boeing |
| CBIT |
Continuous BITE |
| CBM |
Circuit Breaker Monitoring |
| CBMF |
Circuit Breaker Monitoring Function |
| CBMS |
Circuit Breaker Monitoring System |
| CBMU |
Circuit Breaker Monitoring Unit |
| CBP |
Circuit Breaker Panel |
| CC |
Current Comparator |
| CCB |
Compartment Control Box |
| CCB |
Cargo Control Box |
| CCC |
Crash Crew Chart |
| CCCP |
Compressor Cavity Control Pressure |
| CCD |
Cursor Control Device |
| CCD |
Cabin Crew Data |
| CCG |
Cabin Configuration Guide |
| CCMail |
Cabin Crew Mailing |
| CCMU |
Centralized Cryptographic Management Unit |
| CCOC |
Combustion Casing Outer Case |
| CCOM |
Cabin Crew Operating Manual |
| CCR |
Credit Card Reader |
| CCRC |
Cabin Crew Rest Compartment |
| CCRM |
Cabin Crew Rest Module |
| CCS |
Cabin Communication System |
| CCU |
CSAS Control Unit |
| CCW |
Counter Clockwise |
| CD |
Compact Disk |
| CD |
Control Display |
| CDA |
Continuous Descent Approach |
| CDAM |
Centralized Data Acquisition Module |
| CDAS |
Cargo Door Actuation System |
| CDAU |
Centralized Data Acquisition Unit |
| CDC |
Cargo Door Controller |
| CDC |
Crash Detection Circuit |
| CDCV |
Cargo Door Control Valve |
| CDL |
Configuration Deviation List |
| CDLC |
Centralized Data Loading Connector |
| CDLCU |
Cockpit Door Locking Control Unit |
| CDLS |
Cockpit Door Locking System |
| CDM |
Cockpit Door Module |
| CDM |
Coolant Distribution Module |
| CDP |
Compressor Discharge Pressure |
| CDS |
Component Documentation Status |
| CDS |
Control and Display System |
| CDSS |
Cockpit Door Surveillance System |
| CDSU |
Cockpit Door Surveillance Unit |
| CDU |
Center Drive Unit |
| CDU |
Control and Display Unit |
| CE |
Centralized Equipment |
| CED |
Cooling Effect Detector |
| CEL |
Component Evolution List |
| CELLI |
Ceiling Emergency LED Light |
| CEO |
Current Engine Option |
| CEV |
Centre d'Essais en Vol |
| CFC |
Carbon Fiber Composite |
| CFDIU |
Centralized Fault Display Interface Unit |
| CFDS |
Centralized Fault Display System |
| CFFC |
Cockpit Fixed Frequency Converter |
| CFM |
Cable Fabrication Manual |
| CFMI |
CFM International |
| CFR |
Current Flight Report |
| CFRP |
Carbon Fiber Reinforced Plastic |
| CFS |
Cabin File Server |
| CFVCU |
Cargo Fire Verification Control Unit |
| CFVS |
Cargo Fire Verification System |
| CG |
Center of Gravity |
| CGCS |
Center of Gravity Control System |
| CGVR |
Central Guidance Vertical Restraint |
| CH |
Character |
| CH |
Cargo Hold |
| CHAN |
Channel |
| CHG |
Change |
| CHLBLS |
Cargo Hold Low Brightness Lighting System |
| CHMBR |
Chamber |
| CHRG |
Charge |
| CHRO |
Chronometer |
| CHT |
Cargo Hold Tank |
| CI |
Cost Index |
| CIDS |
Cabin Intercommunication Data System |
| CIMS |
Communications and Identification Management System |
| CIN |
Change Identification Number |
| CINS |
Cabin Information Network System |
| CIR |
Common Information Repository |
| CIT |
Compressor Inlet Temperature |
| CIU |
Camera Interface Unit |
| CJC |
Cold Junction Compensation |
| CK |
Check |
| CKPT |
Cockpit |
| CKT |
Circuit |
| CL |
Center Line |
| CL |
Checklist |
| CL/OP |
Closure/Opening |
| CLB |
Climb |
| CLCTR |
Collector |
| CLEDU |
Cabin LED Unit |
| CLG |
Centerline Landing Gear |
| CLK |
Clock |
| CLM |
Component Location Manual |
| CLM |
Cargo Load Management |
| CLNG |
Ceiling |
| CLOG |
Clogging |
| CLOGD |
Clogged |
| CLPR |
Clapper |
| CLR |
Clear |
| CLRD |
Cleared |
| CLRNC |
Clearance |
| CLS |
Cargo Loading System |
| CLS |
Cargo Loading System Manual |
| CLSD |
Closed |
| CLSG |
Closing |
| CM |
Conversion Manual |
| CM |
Conversion Module |
| CM |
Crew Member |
| CMC |
Central Maintenance Computer |
| CMD |
Command |
| CMEU |
Cabin Passenger Management Memory Expansion Unit |
| CMF |
Central Maintenance Function |
| CMI |
Customer Modifiable Information |
| CML |
Consumable Material List |
| CMM |
Calibration Memory Module |
| CMM |
Component Maintenance Manual |
| CMM IPL |
Component Maintenance Manual Illustrated Parts List |
| CMMV |
Component Maintenance Manual Vendor |
| C-MOS |
Complementary Metal Oxyde Semiconductor |
| CMPLTD |
Completed |
| CMPTR |
Computer |
| CMS |
Centralized Maintenance System |
| CMS |
Component Maintenance Sheet |
| CMT |
Cabin Management Terminal |
| CMU |
Communications Management Unit |
| CMV |
Concentrator and Multiplexer for Video |
| CNA |
Common Nozzle Assembly |
| CNCTN |
Connection |
| CNCTR |
Connector |
| CNI |
Communication, Navigation & Identification |
| CNSU |
Cabin Network Server Unit |
| CNTNR |
Container |
| CNTOR |
Contactor |
| CNTRTR |
Concentrator |
| CNU |
Cabin Network Unit |
| CNX |
CONNECTIVITY |
| CO RTE |
Company Route |
| COAS |
Cabin Operations Applications System |
| COAX |
Coaxial |
| COC |
Cabin Operation Center |
| COC |
Customer Originated Change |
| COCT |
Cabin Operations Consultation Tool |
| COLLI |
Contour LED Light |
| COM |
Communication |
| COM |
Command |
| COMC |
CSAS Overheat Monitoring Controller |
| COMDL |
Coding Module |
| COML |
Commercial |
| COMP |
Compass |
| COMP |
Compensator |
| COMPSN |
Compensation |
| COMPT |
Compartment |
| COMPTR |
Comparator |
| COMSEC |
Communication Security |
| CONC |
Concentrator |
| COND |
Condition |
| COND |
Conditioned |
| COND |
Conditioning |
| CONDTR |
Conditioner |
| CONFIG |
Configuration |
| CONFIRMD |
Confirmed |
| CONSUMPT |
Consumption |
| CONT |
Continue |
| CONT |
Continuous |
| CONT |
Controller |
| CONV |
Converter |
| COOL |
Cooler |
| COOL |
Cooling |
| COOLG |
Cooling |
| COOLR |
Cooler |
| COORD |
Coordination |
| COS |
Cowl Opening System |
| COTS |
Commercial Off-The-Shelf |
| COUNT |
Counter |
| COWL |
Cowling |
| CPC |
Cabin Pressure Controller |
| CPCS |
Cabin Pressure Control System |
| CPCS |
Cargo Pressure Control System |
| CPCU |
Cabin Pressure Control Unit |
| CPD |
Cabin Pressure Detector |
| CPDB |
Customized Performance Data Base |
| CPDLC |
Controller-Pilot DataLink Communication |
| CPIF |
Control Power Intermediate Frequency |
| CPIOM |
Core Processing Input/Output Module |
| CPLG |
Coupling |
| CPLR |
Coupler |
| CPMS |
Cabin and Passenger Management System |
| CPMU |
Cabin Passenger Management Unit |
| CPNY |
Company |
| CPRSR |
Compressor |
| CPU |
Central Processing Unit |
| CRC |
Centralized Radio Control |
| CRC |
Continuous Repetitive Chime |
| CRC |
Cyclic Redundancy Check |
| CRC |
Crew Rest Compartment |
| CRDC |
Common Remote Data Concentrator |
| CRES |
Corrosion-Resistant Steel |
| CRG |
Cargo |
| CRI |
Certification Review Item |
| CRL |
Certificate Revocation List |
| CRM |
Communication Router Module |
| CROSSFEEDR |
Crossfeeder |
| CRPA |
Controlled Radiation Pattern Antenna |
| CRPAU |
Controlled Reception Pattern Antenna Unit |
| CRS |
Course |
| CRS |
Certificate of Release to Service |
| CRT |
Cathode Ray Tube |
| CRU |
Central Refirgeration Unit |
| CRU |
Cabin Router Unit |
| CRU |
Card Reader Unit |
| CRZ |
Cruise |
| CS |
Center Spar |
| CS |
Certification Specification |
| CSA |
Common Standard Aircraft |
| CSAS |
Conditioned Service Air System |
| CSBS |
Controllable Sunlight Blocking System |
| CSBSU |
Controllable Sunlight Blocking System Unit |
| CSD |
Constant Speed Drive |
| CSDM |
Cargo Smoke Detection Module |
| CSK |
Countersink |
| CSL |
Console |
| CSM/G |
Constant Speed Motor/Generator |
| CSR |
Certificate Signing Request |
| CSTR |
Constraint |
| CSU |
Command Sensor Unit |
| CT |
Current Transformer |
| CTK |
Center Tank |
| CTL |
Central |
| CTL |
Control |
| CTLR |
Controller |
| CTR |
Center |
| CTU |
Cabin Telecommunications Unit |
| CU |
Control Unit |
| CUDU |
Current Unbalance Detection Unit |
| CUR |
Current |
| CVDR |
Cockpit Voice and Data Recorder |
| CVM |
Cabin Video Monitoring |
| CVMS |
Cabin Video Monitoring System |
| CVR |
Cockpit Voice Recorder |
| CVRS |
Cockpit Voice Recorder System |
| CVS |
Cargo Video Surveillance |
| CVT |
Center Vent Tube |
| CVU |
Crypto Voice Unit |
| CW |
Clockwise |
| CW |
Continuous Wave |
| CWB |
Center Wing Box |
| CWLU |
Cabin Wireless LAN Unit |
| CWS |
Cabin Work Station |
| CWS |
Cargo Winch System |
| CWSIU |
Combined Wheel Speed Interface Unit |
| CY |
Cycle |
| CYL |
Cylinder |
| D/LNA |
Diplexer/Low Noise Amplifier |
| DA |
Drift Angle |
| DAC |
Digital to Analog Converter |
| DAC |
Drawing Aperture Card |
| DAC |
Defensive Aids Computer |
| DADC |
Digital Air Data Computer |
| DaFA |
Data For Application |
| DAGM |
Dry Air Generation Module |
| DAGS |
Dry Air Generation System |
| DAMP |
Damping |
| DAMPG |
Damping |
| DAR |
Digital ACMS Recorder |
| DAR |
Digital AIDS Recorder |
| DASS |
Defensive Aids Sub-System |
| D-ATIS |
Digital Automatic Terminal Information System |
| DAU |
Data Acquisition Unit |
| DB |
Database |
| DBC |
Data Bus Communication |
| DBCR |
DataBase Change Request |
| DBLR |
Doubler |
| DBPS |
Display Based Passenger Sign |
| DBTS |
Data Broadband Transceiver System |
| DC |
Direct Current |
| DCD |
Data Control and Display |
| DCDR |
Decoder |
| DCDU |
Datalink Control and Display Unit |
| DCL |
Digital Cabin Logbook |
| DCL-CCT |
Digital Cabin Logbook - Cabin Configuration Tool |
| DCMS |
Doors Control and Monitoring System |
| DCMU |
Doors Control and Monitoring Unit |
| DCP |
Display Control Panel |
| DCR |
Dock on Crew Rest |
| DCRC |
Dock on Crew Rest Compartment |
| DCU |
Direction Control Unit |
| DCV |
Directional Control Valve |
| DDC |
Discrete Data Concentrator |
| DDM |
Digital Data Module |
| DDP |
Declaration of Design and Performance |
| DDRMI |
Digital Distance and Radio Magnetic Indicator |
| DDU |
Decoy Dispenser Unit |
| DDV |
Direct Drive Valve |
| DECEL |
Decelerate |
| DECOMPRESS |
Decompression |
| DECR |
Decrease |
| DEDP |
Data Entry and Display Panel |
| DEF |
Definition |
| DEFOG |
Defogging |
| DEFRD |
Deferred |
| DEFTHR |
Defeather |
| DEFUEL |
Defueling |
| DEG |
Degree |
| DEGRADD |
Degraded |
| DEL |
Delete |
| DELTA P |
Differential Pressure |
| DEOA |
Door Emergency Opening Actuator |
| DEP |
Departure |
| DEPRESS |
Depressurization |
| DES |
Descend |
| DES |
Descent |
| DEST |
Destination |
| DET |
Detection |
| DET |
Detector |
| DETECTD |
Detected |
| DEU |
Decoder/Encoder Unit |
| DEV |
Deviation |
| DF |
Direction Finder |
| DFCV |
Dual-Flapper Check Valve |
| DFDAMU |
Digital Flight Data Acquisition and Management Unit |
| DFDAU |
Digital Flight Data Acquisition Unit |
| DFDR |
Digital Flight Data Recorder |
| DFDRS |
Digital Flight Data Recording System |
| DFF |
Downstream Fuel Filter |
| DFIDU |
Dual Function Interactive Display Unit |
| DFPPU |
Differential Feedback Position Pick-Off Unit |
| DFPRM |
Duct and Fuel Pipe Repair Manual |
| DFPRM IPL |
Duct and Fuel Pipe Repair Manual Illustrated Parts List |
| DFSOV |
Dual Flow Shut-Off Valve |
| DGI |
Digital Input |
| DGMDB |
Digital Ground Map DataBase |
| DGMDBM |
Digital Ground Map DataBase removable Media |
| DGO |
Digital Output |
| DGPS |
Digital Global Positioning System |
| DH |
Decision Height |
| DHCP |
Dynamic Host Configuration Protocol |
| DIA |
Diameter |
| DIBU |
Door Illumination Ballast Unit |
| DIFF |
Differential |
| DIM |
Direction Input Module |
| DIMM |
Dimmable |
| DIP |
Dual In-line Package |
| DIP |
Door Indication Panel |
| DIPLXR |
Diplexer |
| DIR |
Direct |
| DIR |
Direction |
| DIR |
Director |
| DIRCM |
Direct Infra Red Counter Measures |
| DISC |
Disconnect |
| DISC |
Disconnected |
| DISC |
Disconnection |
| DISCH |
Discharge |
| DISCH |
Discharged |
| DISCNTY |
Discontinuity |
| DIST |
Distance |
| DISTR |
Distribute |
| DISTR |
Distribution |
| DISTR |
Distributor |
| DITCH |
Ditching |
| DITS |
Digital Information Transfer System |
| DIU |
Digital Interface Unit |
| DIVERTG |
Diverting |
| DLC |
Direct Lift Control |
| DLCM |
Data Loading Configuration Manager |
| DLCS |
Data Loading and Configuration System |
| DLK |
Data Link |
| DLOAD |
Data Loading |
| DLRB |
Data Loading Routing Box |
| DLS |
Data Loading Selector |
| DLSU |
Data Loading Selector Unit |
| DM |
Data Module |
| DM |
Dispatch Message |
| DMA |
Direct Memory Access |
| DMAP |
Digital Map |
| DMC |
Display Management Computer |
| DMDLTR |
Demodulator |
| DME |
Distance Measuring Equipment |
| DMFF |
Door Monitoring and Flight Lock Function |
| DMGC |
Digital Map Generation Computer |
| DMGS |
Digital Map Generation System |
| DMM |
Data Memory Module |
| DMP |
Display Management Processor |
| DMPR |
Damper |
| DMU |
Data Management Unit |
| DMZ |
DeMilitarized Zone |
| DN |
Down |
| DNI |
Drawing Numerical Index |
| DNLK |
Downlock |
| DNLKD |
Downlocked |
| DNLNK |
Downlink |
| DOLLI |
Dome LED Light |
| DOW |
Dry Operating Weight |
| DP |
Design Principle |
| DPCU |
Digital Passenger Control Unit |
| DPDT |
Double Pole/Double Throw |
| DPI |
Differential Pressure Indicator |
| DPS |
Differential Pressure Sensor |
| DR |
Dead Reckoning |
| DR |
Door |
| DRAS |
Door and Ramp Actuation System |
| DRM |
Duct Repair Manual |
| DRMI |
Distance Radio Magnetic Indicator |
| DRVG |
Driving |
| DRVR |
Driver |
| DS/C |
Digital Server/Controller |
| DSB |
Door Sensor Block |
| DSC |
Digital Signature Checker |
| DSCRT |
Discrete |
| DSCS |
Door and Escape Slide Control System |
| DSCS |
Door and Slide Control System |
| DSDL |
Dedicated Serial Data Link |
| DSEB |
Digital Seat Electronic Box |
| DSI |
Discrete Input |
| DSIP |
Door/Slide Indication Panel |
| DSM |
Decorative Sheet Material |
| DSMCU |
Doors and Slides Management Control Unit |
| DSMS |
Doors and Slides Management System |
| DSO |
Discrete Output |
| DSPL |
Display |
| DSPLYD |
Displayed |
| DTD |
Document Type Definition |
| DTD |
Data Transfer Device |
| DTG |
Distance to Go |
| DTM |
Data Transfer Medium |
| DTMF |
Dual Tone Multiple Frequency |
| DTMS |
Damage Tolerance Monitoring System |
| DTMU |
Damage Tolerance Monitoring Unit |
| DTO |
Derated Take Off |
| DU |
Display Unit |
| D-ULPA |
Double Ultra Low Particulate Air |
| DVD |
Digital Versatile Disk |
| DVI |
Digital Visual Interface |
| DVR |
Digital Video Recorder |
| DWC |
Drip Water Collector |
| DWG |
Drawing |
| E |
East |
| E/ECI |
Electrical/Electronic Common Installation |
| E/F |
Equipment/Furnishings |
| EABDC |
Enhanced Aircraft Broadcast Data Collector |
| eADL |
enhanced Airborne Data Loader |
| EAI |
Engine Anti-Icing |
| EAIV |
Engine Anti-Icing Valve |
| EALP |
Entrance Area Lighting Panel |
| EAMU |
Emergency Audio Management Unit |
| EAPAS |
Enhanced Airworthiness Program for Aeroplane Systems |
| EAROM |
Electrically Alterable Read Only Memory |
| EATULC |
Emergency ATU Line Contactor |
| EBAS |
Engine Bleed Air System |
| EBATC |
Emergency Battery Contactor |
| EBCU |
Emergency Brake Control Unit |
| EBHA |
Electrical Backup Hydraulic Actuator |
| EBTAC |
Emergency Bus Tie AC Contactor |
| EBTC |
Emergency Bus Tie Contactor |
| EBTDC |
Emergency Bus Tie DC Contactor |
| EBU |
Engine Build-up Unit |
| ECAM |
Electronic Centralized Aircraft Monitoring |
| ECAM TC |
ECAM Temporary Change |
| ECAS |
Emergency Cabin Alerting System |
| ECB |
Electronic Control Box |
| ECF |
Expanded Copper Foil |
| ECLS |
Electrical Cargo Loading system |
| ECM |
Engine Condition Monitoring |
| ECMS |
Electrical Contactor Management System |
| ECMU |
Electrical Contactor Management Unit |
| ECN |
Engineering Change Note |
| ECON |
Economy |
| ECP |
Ecam Control Panel |
| ECS |
Environmental Control System |
| ECU |
Electronic Control Unit |
| ECUCV |
Electronic Control Unit Cooling Valve |
| ED |
Engine Display |
| EDIU |
Electrical Discrete Interface Unit |
| EDMU |
Electrical Distribution Monitoring Unit |
| EDP |
Engine Driven Pump |
| EDS |
Expendable Dispensing System |
| EEC |
Electronic Engine Control |
| EEC |
Engine Electronic Controller |
| EEC |
Emergency Electrical Configuration |
| EECU |
Emergency Extension Control Unit |
| EEHS |
External Event Handling Service |
| EENMU |
Emergency Electrical Network Management Unit |
| EEPDC |
Emergency Electrical Power Distribution Center |
| EEPROM |
Electrically Erasable Programmable Read Only Memory |
| EFB |
Electronic Flight Bag |
| EFCC |
Electronic Flight Control Computer |
| EFCC |
Emergency Flight Control Contactor |
| EFCS |
Electrical Flight Control System |
| EFCU |
Electrical Flight Control Unit |
| EFF |
Effective |
| EFF |
Effectivity |
| EFF/FFU |
Electronic Flight Folder/Flight Follow-Up |
| EFIS |
Electronic Flight Instrument System |
| EFOB |
Estimated Fuel on Board |
| EGC |
Emergency Generator Contactor |
| EGIU |
Electrical Generation Interface Unit |
| EGLC |
Emergency Generator Line Contactor |
| EGMS |
Electrical Galley Management System |
| EGPWM |
Enhanced Ground Proximity Warning Module |
| EGT |
Exhaust Gas Temperature |
| EHA |
Electro-Hydrostatic Actuator |
| EHAC |
Electro-Hydrostatic Actuator Contactor |
| EHC |
Electrical Heater Controller |
| EHCU |
Electromechanical Handforce Control Unit |
| EHF |
Extra High Frequency |
| EHHDLU |
Extended Handheld download Unit |
| EHM |
Engine Health Monitoring |
| EHS |
Electrical Heater System |
| EHSV |
Electro Hydraulic Servo Valve |
| EIF |
Engine Interface Function |
| EILC |
Emergency Interlock Line Contactor |
| EIPM |
Engine Interface Power Management |
| EIPMU |
Engine Interface Power Management Unit |
| EIS |
Electronic Instrument System |
| EIU |
Engine Interface Unit |
| EIVMU |
Engine Interface and Vibration Monitoring Unit |
| EL |
Electric |
| ELA |
Electrical Load Analysis |
| ELAC |
Elevator Aileron Computer |
| ELAN |
Ethernet Local Area Network |
| ELB |
Electronic Log Book |
| ELC |
Electronic Library Computer |
| ELC |
Emergency Line Contactor |
| ELCO |
Exterior Lights Controller |
| ELEC |
Electric |
| ELEC |
Electrical |
| ELEC |
Electricity |
| ELEK |
Electronic |
| ELEV |
Elevation |
| ELEV |
Elevator |
| ELEVN |
Elevation |
| ELEVR |
Elevator |
| ELF |
Engineering support and data Link Function |
| ELFDB |
Emergency Light Floor Disconnect Box |
| ELM |
Electrical Load Management |
| ELMF |
Electrical Load Management Function |
| ELMS |
Electrical Load Management System |
| ELMU |
Electrical Load Management Unit |
| ELPU |
Emergency Lightning Protection Unit |
| ELS |
Electronic Library System |
| ELSD |
Electrical Load Sensing Device |
| ELT |
Emergency Locator Transmitter |
| EMA |
ElectroMechanical Actuator |
| EMC |
Electromagnetic Compatibility |
| EMCD |
Electro Magnetic Chip Detector |
| EMCON |
Emission Control |
| EMCU |
Electric Motor Control Unit |
| EMCU |
Emergency Motor Control Unit |
| EMEL |
Edge Mounted Emergency Llight |
| EMER |
Emergency |
| EMI |
Electromagnetic Interference |
| EMISN |
Emission |
| EMLG |
Enhanced Main Landing Gear |
| EMP |
Electric Motor Pump |
| EMS |
Engine Master Switch |
| EmSS |
Emergency Signalling System |
| EMU |
Engine Monitoring Unit |
| EMWS |
ElectroMechanical Window Shade |
| ENCDR |
Encoder |
| END |
Endurance |
| ENEC |
Emergency Normal to Emergency Contactor |
| ENG |
Engine |
| ENM |
Electrical Network Management |
| ENMF |
Electrical Network Management Function |
| ENMS |
Electrical Network Management System |
| ENMU |
Electrical Network Management Unit |
| ENRM |
Ethernet Network Router Module |
| ENVMOD |
Envelope Modulation |
| EO |
Engine Out |
| EOFIBI |
Engine Oil Filter Impending Blockage Indicator |
| EOL |
Engine Oil Level |
| EOP |
Engine Oil Pressure transducer |
| EOS |
Electronic Overspeed System |
| EOSID |
Engine Out Standard Instrument Departure |
| EOT |
End of Tape |
| EOT |
Engine Oil Temperature transducer |
| EP |
Entry Panel |
| EPC |
External Power Contactor |
| EPCU |
External Power Control Unit |
| EPD |
Extended Principle Diagram |
| EPDC |
Electrical Power Distribution Center |
| EPDS |
Extraction Parachute Disconnection System |
| EPDS |
Electrical Power Distribution System |
| EPES |
Extraction Parachute Ejector System |
| EPESC |
Enhanced Passenger Entertainment System Controller |
| EPGC |
External Power Ground Connector |
| EPGS |
Electrical Power Generation System |
| EPLC |
External Power Line Contactor |
| EPLD |
Electronically Programmable Logic Device |
| EPMM |
Electrical Power Management Module |
| EPMU |
Engine Protection and Monitoring Unit |
| EPR |
Engine Pressure Ratio |
| EPR.D |
EPR Descent |
| EPR.L |
EPR Latch |
| EPROM |
Erasable Programmable Read Only Memory |
| EPSU |
Emergency Power Supply Unit |
| EPU |
Emergency Power Unit |
| EQPD |
Equipped |
| EQPT |
Equipment |
| ER |
Extended Range |
| ER |
Engineering Requirement |
| ERAI |
Emergency Ram Air Inlet |
| ERG |
Electromechanical Release Gate |
| ERMM |
En Route Moving Map |
| ERO |
Engine Running On/Off Load |
| ERP |
Enhanced Runaway Protection |
| ERU |
Engine Relay Unit |
| ESB |
Electrical System BITE |
| ESBF |
Electrical System BITE Function |
| ESC |
Escape |
| ESD |
ElectroStatic Discharge |
| ESDN |
Extended System/Structure Description Note |
| ESEC |
Emergency Smoke/Evacuation Contactor |
| ESLB |
ECAM System Logic Book |
| ESMKTC |
Emergency Smoke Tie Contactor |
| ESN |
Electrical Structure Network |
| ESOV |
Electronic Shutoff Valve |
| ESP |
Electrical Standard Practices |
| ESPM |
Electrical Standard Practices Manual |
| ESPU |
External Sources Protection Unit |
| ESS |
Essential |
| ESS |
Engine Section Stator |
| ESSC |
Essential Contactor |
| EST |
Estimated |
| ESTAC |
Emergency Static inverter AC Contactor |
| ESTC |
Emergency STatic inverter Contactor |
| ESU |
Ethernet Switch Unit |
| ET |
Elapsed Time |
| ETA |
Estimated Time of Arrival |
| ETACS |
External and Taxiing Aid Camera System |
| ETD |
Estimated Time of Departure |
| ETE |
Estimated Time En Route |
| ETHNET |
Ethernet |
| ETLC |
Emergency TR Line Contactor |
| ETO |
Estimated Time Over |
| ETOPS |
Extended Range Operations for Two-Engine Aeroplanes |
| ETP |
Equal Time Point |
| ETP |
Equi-Time Point |
| ETRAC |
Electronic Thrust Reverser Actuation Controller |
| ETRAS |
Electrical Thrust Reverser Actuation System |
| ETT |
Estimated Time for Takeoff |
| EUAD |
European Union Airworthiness Directive |
| EUPB |
Electronic Unit Protection Box |
| EVAC |
Evacuate |
| EVAC |
Evacuation |
| EVMU |
Engine Vibration Monitoring Unit |
| EVS |
Enhanced Vision System |
| EWD |
Engine/Warning Display |
| EWIS |
Electrical Wiring Interconnection System |
| EWS |
Electrical Window Shades |
| EWS |
Electrical Window Shade |
| EX |
Example |
| EXC |
Excitation |
| EXC |
Excite |
| EXCESS |
Excessive |
| EXCHG |
Exchange |
| EXCHGR |
Exchanger |
| EXDLS |
External Door Locking System |
| EXH |
Exhaust |
| EXLCO |
EXterior Light Control |
| EXP |
Expansion |
| EXSTG |
Existing |
| EXT |
Exterior |
| EXT |
External |
| EXTING |
Extinguish |
| EXTING |
Extinguisher |
| EXTING |
Extinguishing |
| EXTN |
Extension |
| EXTNDD |
Extended |
| EXTR |
Extreme |
| EXTRACT |
Extraction |
| EXTRACT |
Extractor |
| F |
Fuel |
| F/C |
First Class |
| F/CTL |
Flight Controls |
| F/O |
First Officer |
| F3D |
Full 3D |
| FA |
Course from a Fixed Waypoint to an Altitude Termination |
| FAC |
Flight Augmentation Computer |
| FADEC |
Full Authority Digital Engine Control |
| FAF |
Final Approach Fix |
| FAIL |
Failed |
| FAIL |
Failure |
| FANS |
Future Air Navigation System |
| FAP |
Flight Attendant Panel |
| FAP |
Forward Attendant Panel |
| FAR |
Federal Aviation Regulations |
| FAS |
Flight Augmentation System |
| FAV |
Fan Air Valve |
| FBB |
Fasten Bed Belt |
| FBDPS |
Flow Balancing Differential Pressure Sensor |
| FBS |
Front Bearing Structure |
| FC |
Course from a Fixed Waypoint to a Changeover Point |
| FC |
Fully Closed |
| FC |
Functional Class |
| FCC |
Flight Control Computer |
| FCC |
Flight Control Contactor |
| FCD |
Fan Cowl Door |
| FCD |
Flight Crew Data |
| FCDC |
Flight Control Data Concentrator |
| FCGS |
Flight Control and Guidance System |
| FCGU |
Flight Control and Guidance Unit |
| FCMC |
Fuel Control and Monitoring Computer |
| FCMS |
Fuel Control Monitoring System |
| FCOC |
Fuel Cooled Oil Cooler |
| FCOM |
Flight Crew Operating Manual |
| FCPC |
Flight Control Primary Computer |
| FCRC |
Flight Crew Rest Compartment |
| FCRM |
Flight Control Remote Module |
| FCSC |
Flight Control Secondary Computer |
| FCTM |
Flight Crew Training Manual |
| FCU |
Flight Control Unit |
| FCU |
Fuel Control Unit |
| FCV |
Flow Control Valve |
| FCZ |
Forward Core Zone |
| FD |
Course from a Fixed Waypoint to a DME Distance |
| FD |
Flight Director |
| FD |
Fuselage Datum |
| FDAC |
Full Digital AGU Controller |
| FDAU |
Flight Data Acquisition Unit |
| FDB |
Floor Disconnect Box |
| FDBK |
Feedback |
| FDC |
Fuel Data Concentrator |
| FDCE |
Flight Deck and Cabin Effects |
| FDCE |
Flight Deck/Cargo Effect |
| FDD |
Floppy Disk Drive |
| FDE |
Flight Deck Effect |
| FDEP |
Flight Data Entry Panel |
| FDIAF |
Flight Data Interface/Acquisition Function |
| FDIF |
Flight Data Interface Function |
| FDIMU |
Flight Data Interface and Management Unit |
| FDIU |
Flight Data Interface Unit |
| FDR |
Flight Data Recorder |
| FDRS |
Flight Data Recording System |
| FDU |
Fire Detection Unit |
| FE |
Flight Envelope |
| FEDC |
Fire Extinguishing Data Converter |
| FEDR |
Feeder |
| FEGV |
Fan Exit Guide Vane |
| FERD |
Front End Receiver and Detector |
| FES |
Fire Extinguishing System |
| FEX |
Fire EXtinguishing |
| FF |
Fuel Flow |
| FF |
Front Frame |
| FFCCV |
Fan Frame Compressor Case Vertical |
| FFCCV |
Forward Flange Compressor Casing Vibration |
| FFCM |
Free Fall Control Module |
| FFIBI |
Fuel Filter Impending Blockage Indicator |
| FFM |
Fuel Flow Meter |
| FFSU |
Fixed Frequency Supply Unit |
| FG |
Flight Guidance |
| F-G/S |
FLS Glide Slope |
| FGE |
Flight Guidance and Envelope |
| FGES |
Flight Guidance and Envelope System |
| FH |
Flight Hours |
| FI |
Flight Idle |
| FIDS |
Fault Isolation and Detection System |
| FIFO |
First Input/First Output |
| FIG |
Figure |
| FILG |
Filling |
| FIM |
Fault Isolation Manual |
| FIN |
Functional Item Number |
| FIS |
Flight Information Services |
| FIX |
Fixed |
| FL |
Flight Level |
| FLA |
Flight Lock Actuator |
| FLD |
Field |
| FLD |
Floor Level Display |
| FLE |
Fixed Leading Edge |
| FLEX |
Flexible |
| F-LOC |
FLS Localizer |
| FLP |
Flap |
| FLR |
Floor |
| FLS |
FMS Landing System |
| FLSCU |
Fuel Level Sensing Control Unit |
| FLT |
Flight |
| FLTR |
Filter |
| FLXTO |
Flexible Take-Off |
| FM |
Course from a Fixed Waypoint with a Manual Termination |
| FM |
Flight Management |
| FM |
Flight Manual |
| FM |
Frequency Modulation |
| FM |
Fault Message |
| FMA |
Flight Mode Annunciator |
| FMC |
Flight Management Computer |
| FMCS |
Flight Management Computer System |
| FME |
Flow Metering Equipment |
| FMEA |
Failure Mode & Effects Analysis |
| FMGC |
Flight Management and Guidance Computer |
| FMGEC |
Flight Management Guidance and Envelope Computer |
| FMGES |
Flight Management Guidance and Envelope System |
| FMGS |
Flight Management and Guidance System |
| FML |
Fiber Metal Laminate |
| FMS |
Flight Management System |
| FMST |
Flight Management System Trainer |
| FMT |
Format |
| FMT |
Frequency Management Training |
| FMU |
Fuel Metering Unit |
| FMV |
Fuel Metering Valve |
| FNCP |
Flight Navigation Control Panel |
| FNL |
Final |
| FNSG |
Flight Navigation Symbol Generator |
| FO |
Fully Open |
| FOB |
Fuel On Board |
| FOC |
Fuel/Oil Cooler |
| FOCT |
Flight Operations Consultation Tool |
| FOD |
Foreign Object Damage |
| FOHE |
Fuel/Oil Heat Exchanger |
| FOMAX |
Flight Operations and MAintenance eXchanger |
| FOS |
Fuel Operator Station |
| FOVE |
Flight Operations Versatile Environment |
| FPA |
Flight Path Angle |
| FPEEPMS |
Floor Proximity Emergency Escape Path Marking System |
| FPF |
Fire Protection Function |
| FPH |
Floor Panel Heating |
| F-PLN |
Flight Plan |
| FPMU |
Fuel Properties Measurement Unit |
| FPPU |
Feedback Position Pick-off Unit |
| FPRM |
Fuel Pipe Repair Manual |
| FPS |
Fire Protection System |
| FPT |
Flight Path Target |
| FPV |
Flight Path Vector |
| FQ |
Fuel Quantity |
| FQDC |
Fuel Quantity Data Concentrator |
| FQI |
Fuel Quantity Indicating/Indication/Indicator |
| FQIC |
Fuel Quantity Indication Computer |
| FQMS |
Fuel Quantity and Management System |
| FR |
Frame |
| FREQ |
Frequency |
| FRM |
Fault Reporting Manual |
| FRPA |
Fixed Radiation Pattern Antenna |
| FRS |
Flammability Reduction System |
| FRU |
Frequency Reference Unit |
| FRV |
Fuel Return Valve |
| FS |
Front Spar |
| FSA |
FlySmart with Airbus |
| FSA-NG |
FlySmart with Airbus-New Generation |
| FSB |
Fasten Seat Belts |
| FSCM |
Federal Supply Code for Manufacturers |
| FSN |
Fleet Serial Number |
| FSOV |
Fire ShutOff Valve |
| FSS |
Front Secondary Structure |
| FSTD |
Flight Simulation Training Devices |
| FTE |
Fixed Trailing Edge |
| FTG |
Fitting |
| FTHR |
Feather |
| FTI |
Flight Test Installation |
| FTIS |
Fuel Tank Inerting System |
| FTK |
Feed Tank |
| FTM |
Fuel Temperature Measurement |
| FTSP |
Floor Temperature Setting Panel |
| FTU |
Force Transducer Unit |
| FU |
Fuel Used |
| FUSLG |
Fuselage |
| FW |
Failure Warning |
| FWA |
Flight Warning Application |
| FWC |
Flight Warning Computer |
| FWCD |
Forward Cargo Door |
| FWD |
Forward |
| FWL |
Firewall |
| FWS |
Flight Warning System |
| G |
Green |
| G/S |
Glide Slope |
| GA |
Go-Around |
| GAD |
General Assembly Drawing |
| GADIRS |
GPS Air Data/Inertial Reference System |
| GADIRU |
GPS Air Data Inertial Reference Unit |
| GAIN |
Electrical GAlley INsert equipment |
| GAIR |
General Assembly Inspection Report |
| GALY |
Galley |
| GAPCU |
Ground and Auxiliary Power Control Unit |
| GBAS |
Ground Based Augmentation System |
| GCP |
Glareshield Control Panel |
| GCR |
Generator Control Relay |
| GCS |
Global Communication Suite |
| GCU |
Generator Control Unit |
| GD&T |
Geometric Dimensioning and Tolerancing |
| GDE |
Guide |
| GDNC |
Guidance |
| GDO |
Ground Door Opening |
| GE |
General Electric |
| GEM |
Ground Equipment Manual |
| GEN |
Generator |
| GES |
Ground Earth Station |
| GFE |
Government Furnished Equipment |
| GFI |
Ground Fault Interruption |
| GFLI |
Ground Fuel Level Indication |
| GFR |
Ground Fault Report |
| GFRP |
Glass Fiber Reinforced Plastic |
| GGBU |
Gear Guard Battery Unit |
| GGMU |
Gear Guard Main Unit |
| GGPCU |
Generator and Ground Power Control Unit |
| GGSU |
Gear Guard Sensor Unit |
| GI |
Ground Idle |
| GLA |
Gust Load Alleviation |
| GLASU |
Galley Light Attendant Service Unit |
| GLC |
Generator Line Contactor |
| GLR |
Generator Line Relay |
| GLS |
GBAS Landing System |
| GLSSU |
GPS Landing System Sensor Unit |
| GLT |
Ground Leak Test |
| GMT |
Greenwich Mean Time |
| GNC |
Galley Network Controller |
| GND |
Ground |
| GNLU |
GNSS Navigation and Landing Unit |
| GNSS |
Global Navigation Satellite System |
| GOBO |
Graphical Optical Blackout |
| GOP |
Reduction Gearbox Oil Pressure transducer |
| GP |
Group |
| GPCU |
Ground Power Control Unit |
| GPIRS |
Global Positioning and Inertial Reference System |
| GPM |
General Processing Module |
| GPRS |
General Packet Radio Service |
| GPS |
Global Positioning System |
| GPS |
Geometrical Product Specification |
| GPSSU |
Global Positioning System Sensor Unit |
| GPT |
Ground Programming Tool |
| GPU |
Ground Power Unit |
| GPWC |
Ground Proximity Warning Computer |
| GPWS |
Ground Proximity Warning System |
| GRM |
Geometrical Reference Mock-up |
| GRP |
Geographic Reference Point |
| GRP |
Glass-Reinforced Plastic |
| GRU |
Ground Refrigeration Unit |
| GRVTY |
Gravity |
| GS |
Ground Speed |
| GSB |
Ground Service Bus |
| GSE |
Ground Support Equipment |
| GSHLD |
Glareshield |
| GSM |
Global System for Mobile Communication |
| GSP |
Ground Service Panel |
| GTL |
Ground Test Limitation |
| GUI |
Graphical User Interface |
| GVI |
General Visual Inspection |
| GW |
Gross Weight |
| GWDU |
Galley Waste Disposal Unit |
| GWR |
General Working Rules |
| GYRO |
Gyroscope |
| H/W |
Hardware |
| HA |
Holding Pattern to an Altitude Termination |
| HARN |
Harness |
| HBCS |
High Bandwidth Connectivity System |
| HBV |
Handling Bleed Valve |
| HBVAU |
Handling Bleed Valve Actuation Unit |
| HC |
Heater Circuit |
| HCS |
Humidification Control System |
| HCU |
Head Up Combiner Unit |
| HCU |
Hydraulic Control Unit |
| HDDA |
Hard Disk Drive Array |
| HDG |
Heading |
| HDG/S |
Heading Selected |
| HDL |
Handle |
| HDLG |
Handling |
| HDM |
HSDU Data Module |
| HDMI |
High-Definition Multimedia Interface |
| HDST |
Headset |
| HDU |
Hose Drum Unit |
| HDWHL |
Handwheel |
| HEATG |
Heating |
| HEGS |
Hydraulic Electrical Generating System |
| HEIU |
High Energy Ignition Unit |
| HEPA |
High Efficiency Particulate Air |
| HERTO |
High Energy Rejected Takeoff |
| HES |
Head-End Switch |
| HES |
Head End Server |
| HESU |
Head-End Server Unit |
| HF |
High Frequency |
| HF |
Holding Pattern to a Fixed Waypoint |
| HFDR |
High Frequency Data Radio |
| HFEC |
High Frequency Eddy Current |
| HFP |
Heated Floor Panel |
| HGA |
High Gain Antenna |
| HHX |
Hydraulic Heat Exchanger |
| HI |
High |
| HID |
High Intensity Discharge |
| HIDS |
Host Intrusion Detection System |
| HL |
High Level |
| HLCC |
High Lift Control Computer |
| HLD |
High Power Amplifier/Low Noise Amplifier/Diplexer |
| HLD |
Hold |
| HLD |
High Lift Device |
| HLDP |
Hinge Line Drain Pan |
| HLDR |
Holder |
| HLS |
High Lift System |
| HLTY |
Healthy |
| HM |
Holding Pattern with a Manual Termination |
| HMC |
Hydromechanical Control |
| HMC |
Hydraulic Monitoring and Control |
| HMCA |
Hydraulic Monitoring and Control Application |
| HMCRF |
Hydraulic Monitoring and Control Remote Function |
| HMDU |
Hatrack Mounted Display Unit |
| HMI |
Human-Machine Interface |
| HMU |
Hydromechanical Metering Unit |
| HMU |
Hydromechanical Unit |
| HNDRL |
HANDRAIL |
| HOR |
Hold Open Rod |
| HOT |
High Oil Temperature |
| HP |
High Pressure |
| HPA |
High Power Amplifier |
| HPC |
High Pressure Compressor |
| HPGC |
High Pressure Ground Connector |
| HPIGS |
High Pressure Inert Gas System |
| HPP |
Hardware Pin Programming |
| HPR |
High Power Relay |
| HPSOV |
High Pressure Shut-off Valve |
| HPT |
High Pressure Turbine |
| HPTACC |
High Pressure Turbine Active Clearance Control |
| HPTC |
High Pressure Turbine Clearance |
| HPTCC |
High Pressure Turbine Case Cooling |
| HPTCC |
High Pressure Turbine Clearance Control |
| HPTR |
High Pressure Turbine Rotor |
| HPU |
Head up Projection Unit |
| HPV |
HP Bleed Valve |
| HQ |
Have Quick |
| HRP |
Horizontal Reference Plane |
| HRU |
Highly Resistive Union |
| HS |
High Speed |
| HSD |
High Speed Data |
| HSDU |
High Speed Data Unit |
| HSI |
Horizontal Situation Indicator |
| HSMU |
Hydraulic System Monitoring Unit |
| HSMU |
Hydraulic System Management Unit |
| HST |
High Speed Transceiver |
| HSU |
HUD Sunvisor Unit |
| HTG |
Heating |
| HTR |
Heater |
| HUD |
Head-Up Display |
| HUDC |
Head Up Display Computer |
| HUDS |
Head Up Display System |
| HUMIDIF |
Humidification |
| HV |
High Voltage |
| HVOF |
High Velocity Oxygen-Fuel |
| HVPS |
High Voltage Power Supply |
| HXX |
Hydraulic Heat Exchanger |
| HYD |
Hydraulic |
| I/O |
Input/Output |
| I/P |
Input |
| I/P |
Intercept Point |
| I/P |
Intercept Profile |
| IA4CS |
Identification Authentication Accountability Audit Access Control System |
| IAE |
International Aero Engines |
| IAF |
Initial Approach Fix |
| IAS |
Indicated Airspeed |
| IASC |
Integrated Air System Controller |
| IBIT |
Initiated BITE |
| IBIT |
Interactive Built-In-Test |
| IBLC |
Inter-Bus Line Contactor |
| IBU |
Integrated Ballast Unit |
| ICA |
Instructions for Continued Airworthiness |
| ICD |
Interface Control Document |
| ICP |
Integrated Control Panel |
| ICPS |
Integrated Control Panel System |
| ICU |
Isolation Control Unit |
| ICU |
IGGS Controller Unit |
| ICY |
Interchangeability |
| ICY-CS |
Interchangeability Compliance Sheet |
| ID |
Inside Diameter |
| ID |
Identification |
| IDENT |
Identification |
| IDENT |
Identifier |
| IDENT |
Identify |
| IDG |
Integrated Drive Generator |
| IDLS |
Internal Door Locking System |
| IDU |
Interactive Display Unit |
| IF |
Initial Fix |
| IFE |
In-Flight Entertainment |
| IFEC |
In-Flight Entertainment Center |
| IFF |
Identification Friend or Foe |
| IFPA |
InFlight Performance Application |
| IFR |
Instrument Flight Rules |
| IGA |
Intermediate Gain Antenna |
| IGB |
Inlet Gear Box |
| IGDS |
Inert Gas Distribution System |
| IGGS |
Inert Gas Generation System |
| IGN |
Ignition |
| IGSC |
Inert Gas System Control |
| IGV |
Inlet Guide Vane |
| IGWI |
Integrated Galley Warming Insert |
| IJP |
Integrated Jump Plate |
| ILLUM |
Illumination |
| ILS |
Instrument Landing System |
| IM |
Inner Marker |
| IMA |
Integrated Modular Avionics |
| IMACS |
Information Management Aircraft-ground Communication System |
| IMCC |
Information Management Common Chassis |
| IML |
Integration Maintenance Load |
| IMM |
Immediate |
| IMR |
Interlock Monitoring Relay |
| IMU |
Inertial Measurement Unit |
| INB |
Inbound |
| INBD |
Inboard |
| INCR |
Increment |
| IND |
Indicator |
| INDEP |
Independent |
| INDG |
Indicating |
| INFO |
Information |
| INHIB |
Inhibit |
| INHIB |
Inhibited |
| INHIB |
Inhibition |
| INIT |
Initial |
| INIT |
Initialization |
| INOP |
Inoperative |
| INR |
Inner |
| INRTL |
Inertial |
| INS |
Inertial Navigation System |
| INST |
Instinctive |
| INST |
Instrument |
| INSTL |
Installation |
| INSU |
Integrated Network Server Unit |
| INSUL |
Insulate |
| INSUL |
Insulation |
| INSUL |
Insulator |
| INT |
Interior |
| INT |
Intercom |
| INTCP |
Intercept |
| INTEG |
Integral |
| INTEG |
Integrally |
| INTERCOM |
Intercommunication |
| INTFC |
Interface |
| INTL |
Internal |
| INTLK |
Interlock |
| INTMD |
Intermediate |
| INTMT |
Intermittent |
| INTPH |
Interphone |
| INTRG |
Interrogate |
| INTRG |
Interrogator |
| INTRPT |
Interrupt |
| INV |
Inverter |
| INV |
Inverse Video |
| IOC |
Initial Operating Clearance |
| IOM |
Input/Output Module |
| IP |
Intermediate Pressure |
| IP |
Internet Protocol |
| IPC |
Illustrated Parts Catalog |
| IPCOM |
Internet Protocol Communication |
| IPCS |
Ice Protection Control System |
| IPCU |
Ice Protection Control Unit |
| IPCV |
Intermediate Pressure Check Valve |
| IPD |
Illustrated Parts Data |
| IPDU |
Ice Protection Data Unit |
| IPPU |
Instrumentation Position Pick-off Unit |
| IPRAM |
Integrated Prerecorded Announcement Module |
| IPS |
Inlet Particle Separator |
| IPSM |
Intelligent Power Supply Module |
| IPTCC |
Intermediate Pressure Turbine Case Cooling |
| IR |
Inertial Reference |
| IRD |
Integrated Receiver Decoder |
| IRDC |
Interface Remote Data Concentrator |
| IRDC |
Integrated Remote Data Concentrator |
| IRDM |
Integrated Receiver Decoder Module |
| IRP |
Integrated Refuel Panel |
| IRS |
Inertial Reference System |
| ISA |
International Standard Atmosphere |
| ISB |
Inspection Service Bulletin |
| ISDN |
Integrated Services Data Network |
| ISDN |
Integrated Services Digital Network |
| ISDPL |
Inadvertent Slide Deployment Prevention Light |
| ISIS |
Integrated Standby Instrument System |
| ISM |
Illumination Sensor Module |
| ISO |
International Standardization Organization |
| ISOL |
Isolation |
| ISP |
Integrated Static Probe |
| ISPSS |
In-Seat Power Supply System |
| ISPSU |
In-Seat Power Supply Unit |
| ISS |
Integrated Surveillance System |
| ISU |
Integrated Surveillance Unit |
| ITP |
In-Trail Procedure |
| IUL |
In-Use Light |
| IV |
Isolation Valve |
| IVASEB |
Integrated Video and Audio Seat Electronic Box |
| IVS |
Inertial Vertical Speed |
| IWDL |
Internal Wireless Data Link |
| JAM |
Jammed |
| JAM |
Jamming |
| JAR |
Joint Aviation Requirements |
| JB |
Jack Box |
| JEP |
Jeppesen |
| JFGW |
Jettison Final Gross Weight |
| JID |
Jeppesen Inflight Database |
| JITX |
Jeppesen Integrated Tool Kit X |
| JM |
Jumpmaster |
| JTSN |
Jettison |
| JUNCTN |
Junction |
| KANDU |
Ku/Ka-band Aircraft Networking Data Unit |
| KBD |
Keyboard |
| KCCU |
Keyboard and Cursor Control Unit |
| KCS |
Kneeling Control System |
| KFS |
Kaspersky File System |
| KOD |
Key Of the Day |
| KPP |
Key Process Parameter |
| KRFU |
Ku/Ka-band Radio Frequency Unit |
| KU |
Keyboard Unit |
| L |
Left |
| L |
Length |
| L/FD |
Lateral Flight Director |
| L/G |
Landing Gear |
| L/HIRF |
Lightning/High Intensity Radiated Fields |
| LA |
Linear Accelerometer |
| LAF |
Load Alleviation Function |
| LAILA |
LAvatory Interface and Light Adapter |
| LAMM |
Lights, Audio and Miscellaneous Module |
| LAN |
Local Area Network |
| LAO |
Lateral Air Outlet |
| LAT |
Lateral |
| LAT |
Latitude |
| LAV |
Lavatory |
| LBA |
Logical Bus Application |
| LBA |
Left Bottom Aft |
| LBC |
Local Booking Code |
| LBF |
Left Bottom Forward |
| LBP |
Left Bottom Plug |
| LC |
Line Contactor |
| LCA |
Life Cycle Assessment |
| LCD |
Liquid Crystal Display |
| LCDT |
Load Compressor Discharge Temperature |
| LCF |
Left Center Fuselage |
| LCH |
Latch |
| LCIT |
Load Compressor Inlet Temperature |
| LCN |
Load Classification Number |
| LCP |
Local Control Panel |
| LCTR |
Locator |
| LCU |
Lock Control Unit |
| LD |
Lower Deck |
| LD CAB |
Lower Deck Cabin |
| LD GALY |
Lower Deck Galley |
| LD LAV |
Lower Deck Lavatory |
| LDC |
Local Door Controller |
| LDCC |
Lower Deck Cargo Compartment |
| LDF |
Lower Deck Facilities |
| LDG |
Landing |
| LDM |
LED-Driver Module |
| LDMCR |
Lower Deck Mobile Crew Rest |
| LDPA |
LanDing Performance Application |
| LDS |
Laptop Docking Station |
| LDSF |
Lower Deck Surveillance Function |
| LE |
Leading Edge |
| LED |
Light Emitting Diode |
| LEHGS |
Local Electro-Hydraulic Generation System |
| LEO |
Low Earth Orbit |
| LER |
Leading Edge Rib |
| LF |
Low Frequency |
| LGA |
Low Gain Antenna |
| LGCIS |
Landing Gear Control Indication System |
| LGCIU |
Landing Gear Control and Interface Unit |
| LGCM |
Light Green Communication Manager |
| LGCS |
Landing Gear Control System |
| LGERS |
Landing Gear Extension and Retraction System |
| LGL |
LED Gobo Light |
| LGMS |
Landing Gear Management System |
| LGMS |
Landing Gear Monitoring System |
| LGWSS |
Landing Gear Well Surveillance System |
| LH |
Left Hand |
| LIB |
Loudspeaker and Indicator Box |
| LIM |
Limit |
| LIM |
Limitation |
| LIM |
Limiter |
| LIM |
Limiting |
| LIQD |
Liquid |
| LIS |
Localizer Inertial Smoothing |
| LKD |
Locked |
| LKG |
Locking |
| LKSHFT |
Lockshaft |
| LL |
Latitude/longitude |
| LLA |
Lavatory Light Adapter |
| LLF |
Low Level Flight |
| LLS |
Liquid Level Sensor |
| LM |
Loadmaster |
| LMC |
Loadmaster Controls |
| LMCP |
Loadmaster Control Panel |
| LMES |
Loss of Main Electrical Supply |
| LMF |
Local Maintenance Function |
| LMI |
Loadmaster Instructor |
| LMOM |
Loadmaster Operating Manual |
| LMP |
Left Middle Plug |
| LMS |
Leakage Measurement System |
| LMWS |
Loadmaster Workstation |
| LNA |
Low Noise Amplifier |
| LNC |
Low Noise Cruise |
| LNG |
Long |
| LNR |
Linear |
| LO |
Low |
| LOC |
Localizer |
| LOCKG |
Locking |
| LONG |
Longitude |
| LONGL |
Longitudinal |
| LONGN |
Longeron |
| LOP |
Low Oil Pressure |
| LOPA |
Layout of Passenger Accommodations |
| LOS |
Lavatory Occupied Sign |
| LP |
Low Pressure |
| LPC |
Low Pressure Compressor |
| LPCNG |
LPC New Generation |
| LPNRV |
Low Pressure Non Return Valve |
| LPPS |
Low Pressure port Pressure Sensor |
| LPT |
Low Pressure Turbine |
| LPTACC |
Low Pressure Turbine Active Clearance Control |
| LPTC |
Low Pressure Turbine Clearance |
| LPTCC |
Low Pressure Turbine Case Cooling |
| LPTCC |
Low Pressure Turbine Clearance Control |
| LPTR |
Low Pressure Turbine Rotor |
| LPU |
Lightning Protection Unit |
| LPV |
Localizer Performance with Vertical Guidance |
| LRE |
List of Radioactive and Hazardous Elements |
| LRH |
Loadmaster Reference Handbook |
| LRI |
Line Replaceable Item |
| LRM |
Line Replaceable Module |
| LROPS |
Long Range Operations |
| LRU |
Line Replaceable Unit |
| LS |
Landing System |
| LS |
Loudspeaker |
| LS |
Low Speed |
| LSA |
Loudspeaker Assembly |
| LSAP |
Loadable Software Aircraft Parts |
| LSB |
Least Significant Bit |
| LSB |
Lower Sideband |
| LSBM |
Load Secure Batch Media |
| LSC |
Load Signature Certificate |
| LSDS |
Load Sensing Drive Strut |
| LSI |
Large Scale Integrated/Integration/Integrator |
| LSR |
Load Shedding Relay |
| LSW |
Low Speed Warning |
| LT |
Light |
| LTA |
Left Top Aft |
| LTD |
Limited |
| LTD PLT |
Lighted Plate |
| LTF |
Left Top Forward |
| LTG |
Lighting |
| LTM |
Livestock Transportation Manual |
| LTMS |
Life Time Monitoring System |
| LTMU |
Life Time Monitoring Unit |
| LTP |
Left Top Plug |
| LV |
Low Voltage |
| LVDS |
Low Voltage Differential Signaling |
| LVDT |
Linear Variable Differential Transducer |
| LVL |
Level |
| LVO |
Low Visibility Operations |
| LVP |
Low Visibility Procedure |
| LVR |
Lever |
| LVT |
Linear Voltage Transducer |
| LVT |
Low Volume Terminal |
| LW |
Left Wing |
| LW |
Landing Weight |
| LWR |
Lower |
| LWR |
Laser Warning Receiver |
| LWSA |
Lavatory Water Supply Assy |
| M/L |
Mood Lighting |
| MAC |
Mean Aerodynamic Chord |
| MACT |
Module Application Configuration Table |
| MAF |
Maintenance Access Function |
| MAG |
Magnetic |
| MAG DEC |
Magnetic Declination |
| MAIN MUX |
Main Multiplexer |
| MAINT |
Maintenance |
| MAN |
Manual |
| MAR |
Maritime |
| MAS |
Modulated Air System |
| MAT |
Multi-purpose Access Terminal |
| MAX |
Maximum |
| MBN |
Metallic Bonding Network |
| MCA |
Major Component Assembly |
| MCA |
Maintenance Central Access |
| MCC |
Maintenance Control Center |
| MCCT |
Module Common Configuration Table |
| MCD |
Movable Class Divider |
| MCDL |
Master Configuration Deviation List |
| MCDU |
Multipurpose Control & Display Unit |
| MCE |
Motor Control Electronic |
| MCL |
Maximum Climb |
| MCPU |
Motor Control and Protection Unit |
| MCS |
Mission Computer Subsystem |
| MCSU |
Mechanical Crash Sensor Unit |
| MCT |
Maximum Continuous Thrust |
| MCTI |
Manufacturing Critical Item |
| MCU |
Master Control Unit |
| MCU |
Modular Concept Unit |
| MCUR |
Mean Cycle Between Unscheduled Removals |
| MD |
Main Deck |
| MDA |
Minimum Descent Altitude |
| MDCC |
Main Deck Cargo Compartment |
| MDCD |
Main Deck Cargo Door |
| MDCLS |
Main Deck Cargo Loading System |
| MDDU |
Multipurpose Disk Drive Unit |
| MDH |
Minimum Descent Height |
| MDL |
Module |
| MDR |
Multiregional DBS (Digital Broadcast System) Receiver |
| MDS |
Maintenance Data System |
| MDU |
Manual Drive Unit |
| MEAS |
Measurement |
| MEC |
Main Engine Control |
| MECH |
Mechanic |
| MECH |
Mechanical |
| MECH |
Mechanism |
| MED |
Medium |
| MEDEVAC |
Medical Evacuation |
| MEL |
Minimum Equipment List |
| MEO |
Middle Earth Orbit |
| MEP |
Main Executive Program |
| MES |
Main Engine Start |
| MET |
Meteorological |
| MEW |
Manufacturer's Empty Weight |
| MFA |
Memorized Fault Annunciator |
| MFD |
MultiFunction Display |
| MFF |
Main Fuel Filter |
| MFG |
Manufacturing |
| MFP |
Maintenance Facility Planning |
| MFP |
MultiFunction Probe |
| MFR |
Manufacturer |
| MFS |
MultiFunction Sensor |
| MGB |
Main Gear Box |
| MGMT |
Management |
| MHA |
Minimum Height Alert |
| MHE |
Magnetic Heading East |
| MHM |
Maintenance HMI Manager |
| MHN |
Magnetic Heading North |
| MHS |
Magnetic Heading South |
| MHW |
Magnetic Heading West |
| MI |
Magnetic Indicator |
| MIB |
Management Information Base |
| MIC |
Microphone |
| MIC |
MIDS Interface Computer |
| MICBAC |
Micro-System Bus Access Channel |
| MID |
Middle |
| MID |
Modification Information Document |
| MIDS |
Multifunctional Information Distribution System |
| MIDU |
Multi-Input Interactive Display Unit |
| MILA |
Mini Light Adapter |
| MIN |
Minimum |
| MIP |
Master Interphone Panel |
| MIP |
Mobile Inner Panel |
| MISC |
Miscellaneous |
| Mix LOC/NAV |
Mixed LOCalizer/Vertical NAVigation |
| MKB |
Multifunction Keyboard |
| MKR |
Marker (radio) Beacon |
| MLA |
Maneuver Load Alleviation |
| MLAP |
Maintenance Laptop |
| MLB |
Maintenance LogBook |
| MLC |
Mood Lighting Controller |
| MLFAP |
Mood Lighting Flight Attendant Panel |
| MLG |
Main Landing Gear |
| MLGB |
Main Landing Gear Bay |
| MLI |
Magnetic Level Indicator |
| MLIH |
Magnetic Level Indicator Housing |
| MLS |
Microwave Landing System |
| MLSCC |
Microwave Landing System Computed Centerline |
| MLW |
Maximum Landing Weight |
| MM |
Middle Marker |
| MMEL |
Master Minimum Equipment List |
| MMI |
Manual Magnetic Indicator |
| M-MMC |
Military Mission Management Computer |
| M-MMS |
Military Mission Management System |
| MMOSEL |
Master Minimum Operational and Safety Equipment List |
| MMR |
Multi-Mode Receiver |
| MMRP |
Military Mission Radar Processor |
| MNFOLD |
Manifold |
| MOD |
Modification |
| Modem |
Modulator-Demodulator |
| MODLTR |
Modulator |
| Modman |
Modem/Manager |
| MON |
Monitor |
| MON |
Monitored |
| MON |
Monitoring |
| MONMT |
Monument |
| MOP |
Mobile Outer Panel |
| MOR |
Modular Overceiling Rack |
| MORA |
Minimum Off Route Altitude |
| MORV |
Mixer Overpressure Relief Valve |
| MOS |
Metal Oxyde Semiconductor |
| MOSEL |
Minimum Operational and Safety Equipment List |
| MOT |
Motor |
| MOT |
Motorized |
| MPaT |
Materials, Processes and Tests |
| MPD |
Maintenance Planning Document |
| MPDS |
Mobile Packet Data Service |
| MPFAP |
Multi Purpose Flight Attendant Panel |
| MPU |
Modem Processor Unit |
| MPV |
Manifold Pressure Valve |
| MRB |
Maintenance Review Board |
| MRBR |
Maintenance Review Board Report |
| MRU |
MIDS Radio Unit |
| MRW |
Maximum Ramp Weight |
| MSA |
Minimum Safe Altitude |
| MSB |
Most Significant Bit |
| MSD |
Mass Storage Device |
| MSDS |
Material Safety Data Sheet |
| MSG |
Maintenance Steering Group |
| MSG |
Message |
| MSI |
Maintenance Significant Item |
| MSL |
Mean Sea Level |
| MSL |
Maintenance System Load |
| MSM |
Monitoring System Module |
| MSN |
Manufacturer Serial Number |
| MSTR |
Master |
| MSU |
Media Server Unit |
| MSU |
Mode Selector Unit (IRS) |
| MSU |
Motor Switching Unit |
| MSW |
Microswitch |
| MTBD |
Mean Time Between Defects |
| MTBF |
Mean Time Between Failures |
| MTBR |
Mean Time Between Removals |
| MTBUR |
Mean Time Between Unscheduled Removals |
| MTD |
Maintenance Training Device |
| MTES |
Mobile Tank Extraction System |
| MTG |
Mounting |
| MTI |
Multi Tank Indicator |
| MTO |
Maximum Take-Off |
| MTOGW |
Maximum Takeoff Gross Weight |
| MTOW |
Maximum Takeoff Weight |
| MTP |
Maintenance and Test Panel |
| MTR |
Manufacturing Tolerance Requirement |
| MTTF |
Mean Time to Failure |
| MTTR |
Mean Time to Repair |
| MTTUR |
Mean Time to Unscheduled Removal |
| MTW |
Maximum Taxi Weight |
| MU |
Management Unit |
| MUX |
Multiplex |
| MUX |
Multiplexer |
| MVDR |
Multiple VHF Data Radio |
| MVT |
Movement |
| MWS-AE |
Missile Warning System - Active Element |
| MWS-PE |
Missile Warning System - Passive Element |
| MXR |
Mixer |
| MZFW |
Maximum Zero Fuel Weight |
| N |
North |
| N MOS |
Negative Metal Oxide Semiconductor |
| N/A |
Not Applicable |
| N/W |
Nose Wheel |
| N/WS |
Nose Wheel Steering |
| N1 |
Engine Fan Speed |
| N1 |
Low Pressure Rotor Speed |
| N1.D |
N1 Descent |
| N1.L |
N1 Latch |
| N2 |
High Pressure Rotor Speed |
| NAC |
Nacelle |
| NAC |
Nacelle Air Cooling |
| NADP |
Noise Abatement Departure Procedure |
| NAI |
Nacelle Anti-Icing |
| NAIADS |
New Air and Inertia Automatic Data Switching |
| NAIF |
NSS ACR Instrumentation Function |
| NAIS |
Nacelle Anti-Ice System |
| NAS |
Navy and Army Standard |
| NASA |
National Aeronautics and Space Administration |
| NATS |
North American Telephone System |
| NAV |
Navigation |
| NAVAID |
Navigation Aid |
| NBC |
Nuclear Biological Chemical |
| NBCM |
Normal Brake Control Manifold |
| NBD |
Network Block Device |
| NBF |
Network BITE Function |
| NBPT |
No Break Power Transfer |
| NBSELV |
Normal Brake Selector Valve |
| NC |
Normally Closed |
| NCD |
No Computed Data |
| NCR |
NSS Communication Router |
| NCU |
NSS Control Unit |
| NCU |
Network Control Unit |
| NCV |
Nacelle Cooling Valve |
| ND |
Navigation Display |
| NDB |
Non-Directional Beacon |
| NDM |
Noise Definition Manual |
| NDT |
Non-Destructive Test |
| NEA |
Nitrogen Enriched Air |
| NEF |
Nacelle Extension Fairings |
| NEG |
Negative |
| NEIC |
Normal to Emergency Interlock Contactor |
| NEO |
New Engine Option |
| NEOL |
Near End Of Life |
| NFC |
Near Field Communication |
| NFOV |
Narrow Field of View |
| NFSI |
Non-Functional Standard Item |
| NGV |
Nozzle Guide Vane |
| NHA |
Next Higher Assembly |
| NIM |
Network Interface Module |
| NLG |
Nose Landing Gear |
| NMI |
Non Maskable Interrupt |
| NMS |
Noise Masking System |
| NMU |
Noise Masking Unit |
| NO |
Normal Operation |
| NO |
Normally Open |
| No. |
Number |
| NORM |
Normal |
| NOVOLRAM |
Non-volatile Random Access Memory |
| NP |
Propeller Rotational Speed |
| NRW |
Net Recoverable Weight |
| NS |
No Smoking |
| NSA |
Norme Sud Aviation |
| NSCM |
NATO Supply Code for Manufacturers |
| NSDW |
Non Specific Design Work |
| NSI |
Non Standard Item |
| NSIU |
Nose Static Interface Unit |
| NSM |
Network Server Module |
| NSS |
Network Server System |
| NTD |
Navigation and Tactical Display |
| NTF |
Non-Textile Floor covering |
| NTM |
Nondestructive Testing Manual |
| NTSC |
National Television System Committee |
| NTWK |
Network |
| NUM |
Numerical |
| NVG |
Night Vision Goggles |
| NVIS |
Night Vision Imaging System |
| NVM |
Non-Volatile Memory |
| NWS |
Nose Wheel Steering |
| O |
Open |
| O/P |
Output |
| O2 |
Oxygen |
| OAMS |
Onboard Asynchronous Messaging Service |
| OANC |
Onboard Airport Navigation Computer |
| OANS |
Onboard Airport Navigation System |
| OAT |
Outside Air Temperature |
| OBCE |
On-Board Control Equipment |
| OBCE-WW |
On-Board Control Equipment - WorldWide |
| OBCU |
OBOGS Control Unit |
| OBIGGS |
On Board Inert Gas Generation System |
| OBOGS |
On Board Oxygen Generation System |
| OBRM |
On Board Replaceable Module |
| OBS |
Omni Bearing Selector |
| OC |
Oceanic Clearance |
| OC |
Open Circuit |
| OC |
Overcurrent |
| OCCAR |
Organisation Conjointe de Coopération en Matière d'Armement |
| OCCPD |
Occupied |
| OCCPNT |
Occupant |
| OCED |
Operator-Customized ECAM Database |
| OCM |
Outflow Valve Control Module |
| OCSM |
Outflow Valve Control and Sensor Module |
| OCU |
Outflow Valve Control Unit |
| OD |
Outside Diameter |
| ODMS |
Oil Debris Monitoring System |
| ODR |
Operator Differences Requirement |
| ODR |
On-Demand Repository |
| ODSM |
Open world Data Storage Module |
| ODU |
Optical Display Unit |
| OEA |
Oxygen Enriched Air |
| OEW |
Operational Empty Weight |
| OF |
Overfrequency |
| OFDM |
Onboard Flight Data Monitoring |
| OFF/R |
Off Reset |
| OFIBI |
Oil Filter Impending Blockage Indicator |
| OFMV |
Oil Flow Management Valve |
| OFP |
Operational Flight Program |
| OFST |
Offset |
| OFV |
Outflow Valve |
| OFW |
Outer False Work |
| OGV |
Outlet Guide Vane |
| OH |
Opposite Hand |
| OHDS |
OverHeat Detection System |
| OHDU |
Overheat Detection Unit |
| OHSC |
Overhead Stowage Compartment |
| OHU |
Optical Head Unit |
| OIS |
Onboard Information System |
| OIT |
Oil Inlet Temperature |
| OIT |
Onboard Information Terminal |
| OK |
Correct |
| OM |
Outer Marker |
| OMD |
Operator Modifiable Data |
| OMS |
Onboard Maintenance System |
| OMT |
Onboard Maintenance Terminal |
| OMTS |
On-Board Mobile Telephony System |
| OOOI |
Out of the gate, Off the ground, On the ground, Into the gate |
| OOT |
Oil Outlet Temperature |
| OP |
Operational |
| OPER |
Operative/Operation/Operating |
| OPMS |
Oleo Pressure Monitoring System |
| OPNG |
Opening |
| OPP |
Opposite |
| OPS |
Operations |
| OPSOV |
Over-Pressure Shut Off Valve |
| OPT |
Optimum |
| OPT |
Optional |
| OPTS |
Oleo Pressure and Temperature Sensor |
| OPU |
Overspeed Protection Unit |
| OPU |
Overvoltage Protection Unit |
| OPV |
Overpressure Valve |
| ORT |
Owner Requirement Table |
| ORVD |
Overpressure Relief Valve with Dump Function |
| OS |
Operating System |
| OSCM |
Oxygen System Control and Monitoring |
| OSCU |
Oxygen System Control Unit |
| OSF |
Open world Server Function |
| OSFC |
Open world Server Function Cabinet |
| OSP |
Open Software Platform |
| OTSSU |
Outboard Transmission Speed Sensor Unit |
| OU |
Outlet Unit |
| OUT |
Outlet |
| OUTB |
Outbound |
| OUTBD |
Outboard |
| OUTFLW |
Outflow |
| OUTR |
Outer |
| OVBD |
Overboard |
| OVFL |
Overflow |
| OVHD |
Overhead |
| OVHT |
Overheat |
| OVLD |
Overload |
| OVPRESS |
Overpressure |
| OVRD |
Override |
| OVSP |
Overspeed |
| OVSTEER |
Oversteer |
| OVTEMP |
Overtemperature |
| OWD |
Open World Diode |
| OWD |
Overwing Door |
| OWS |
Open World Shell |
| OXY |
Oxygen |
| P |
Purple |
| P/B |
Pushbutton |
| P/BSW |
Pushbutton Switch |
| P/C |
Printed Circuit |
| P/C |
Premium Class |
| P/N |
Part Number |
| P/Y |
Premium Economy Class |
| PA |
Passenger Address |
| PADS |
Pneumatic Air Distribution System |
| PARAM |
Parameter |
| PARK |
Parking |
| PAS |
Pitch Attitude Sensor |
| PATS |
Passenger Air-to-Ground Telephone System |
| PAX |
Passenger |
| PBCU |
Propeller Brake Control Unit |
| PBD |
Place Bearing/Distance |
| PBE |
Protective Breathing Equipment |
| PBIT |
Power-Up Built-in Test |
| PBM |
Power Plant Build-up Manual |
| PBSELV |
Park Brake Selector Valve |
| PBSW |
Pushbutton Switch |
| PC |
Pack Controller |
| PC |
Personal Computer |
| PCB |
Printed Circuit Board |
| PCD |
Protection and Commutation Device |
| PCDM |
Primary Contactor Driver Module |
| PCDS |
Primary Contactor Driver System |
| PCE |
PreCooler Exchanger |
| PCEJPS |
Precooler Ejector Pressure Sensor |
| PCEJSOV |
Precooler Ejector Shut-Off Valve |
| PCM |
Power Conditioning Module |
| PCM |
Pulse Code Modulation |
| PCOS |
Power Cowl Opening System |
| PCPU |
Primary COS Power Unit |
| PCS |
Propulsion Control System |
| PCT |
Probe Compensator Temperature |
| PCTI |
Performance Critical Item |
| PCU |
Passenger Control Unit |
| PCU |
Power Control Unit |
| PCU |
Power Controller Unit |
| PD |
Principle Diagram |
| PDB |
Performance Database |
| PDCS |
Power Distribution Control System |
| PDFU |
Pedal Damping and Friction Unit |
| PDI |
Power and Data Interface |
| PDL |
Portable Data Loader |
| PDMC |
Power Distribution Maintenance Computer |
| PDMF |
Power Distribution Maintenance Function |
| PDMI |
Power Distribution Maintenance Interface |
| PDMIC |
Power Distribution Maintenance Interface Contactor |
| PDMMF |
Power Distribution Monitoring and Maintenance Function |
| PDMT |
Power Distribution Maintenance Terminal |
| PDO |
Power Door Opening |
| PDOS |
Power Door Opening System |
| PDT |
Probe Dual Temperature |
| PDU |
Power Drive Unit |
| PE |
HP Stage Air Pressure |
| PED |
Portable Electronic Device |
| PED |
Pedestal |
| PEDMU |
Primary Electrical Distribution Management Unit |
| PEF |
Pylon Extension Fairing |
| PEPDC |
Primary Electrical Power Distribution Center |
| PERF |
Performance |
| PERM |
Permanent |
| PERS |
Personal |
| PES |
Passenger Entertainment System |
| PESAR |
Passenger Entertainment System Audio Reproducer |
| PESC |
PES Controller |
| PESMMUX |
Passenger Entertainment System Main Mux |
| PF |
Pilot Flying |
| PF |
Power Factor |
| PFA |
PERMIT FOR ALTERNATIVE |
| PFC |
Primary Flight Control |
| PFCS |
Primary Flight Control System |
| PFD |
Primary Flight Display |
| PFDB |
Power Floor Disconnect Box |
| PFIS |
Passenger Flight Information System |
| PFM |
Pre-Flight Message |
| PFQ |
Preselected Fuel Quantity |
| PFR |
Post Flight Report |
| PFTU |
Pedal Feel and Trim Unit |
| PGB |
Propeller Gear Box |
| PH |
Phase |
| PHC |
Probe Heat Computer |
| PHD |
Protruding Head |
| PHMU |
Power Health Monitoring Unit |
| PHMU |
Prognostic and Health Monitoring Unit |
| PHV |
Pressure Holding Valve |
| PID |
Personal Identification Device |
| PIESD |
Passenger Information and Entertainment Services Domain |
| PIM |
Programming and Indication Module |
| PIM |
Passive InterModulation |
| PIN PROG |
Pin Programming |
| PIPC |
Power Plant Illustrated Parts Catalog |
| PIREP |
Pilot Report |
| PISA |
Passenger Interface and Supply Adapter |
| PIU |
Passenger Information Unit |
| PKI |
Public Key Infrastructure |
| PKK |
Power Plant Kit |
| PL |
Plate |
| PLA |
Power Light Adapter |
| PLC |
Powerline Communication |
| PLCRD |
Placard |
| PLSP |
Point Level Sensor Processor |
| PLU |
Power Locking Unit |
| PMA |
Permanent Magnet Alternator |
| PMAT |
Portable Multipurpose Access Terminal |
| PMC |
Power Management Control |
| PMC |
Power Management Controller |
| PMDB |
Production Management Data Base |
| PMG |
Permanent Magnet Generator |
| PMM |
Personalization Memory Module |
| PMP |
Pump |
| PMR |
Performance Maintenance Recorder |
| PMS |
Process and Material Specification |
| PMT |
PID Management Tool |
| PMU |
Power Management Unit |
| PMUX |
Power Plant Multiplexer |
| PN |
Part Number |
| PNEU |
Pneumatic |
| PNF |
Pilot Non Flying |
| PNL |
Panel |
| PNR |
Part Number |
| PNTL |
Pintle |
| PNU |
PNeUmatic |
| POB |
Pressure-Off Brake |
| POB |
Power-Off Brake |
| PODD |
Passenger Owned Devices Domain |
| PODTS |
Precooler Dual Temperature Sensor |
| POM |
Point of Measurement |
| POR |
Point of Regulation |
| PORT |
Portable |
| POS |
Position |
| POT |
Potentiometer |
| POXIP |
Passenger Oxygen Indication Panel |
| PPOS |
Present Position |
| PPU |
Position Pickoff Unit |
| PR |
Pressure |
| PRAM |
Prerecorded Announcement and Music |
| PRB |
Probe |
| PREAMP |
Preamplifier |
| PRECOOL |
Precooler |
| PRED |
Prediction |
| PRED |
Predictive |
| PRE-EMPT |
Pre-emptive |
| PREREC |
Prerecorded |
| PRES POS |
Present Position |
| PRESEL |
Preselection |
| PRESEL |
Preselector |
| PRESS |
Pressure |
| PRESS |
Pressurization |
| PRESS |
Pressurize |
| PREV |
Previous |
| PRI |
Priority |
| PRIM |
Primary |
| PRIM |
PRIMary System |
| PRIM |
PRIMary Computer |
| PRIV |
Private |
| PRM |
Person with Reduced Mobility |
| PROBIGGS |
Portable Removable On Board Inert Gas Generation System |
| PROBOGS |
Preconditioning for On Board Oxygen Generation System |
| PROC |
Procedure |
| PROCSR |
Processor |
| PROF |
Profile |
| PROG |
Program |
| PROG |
Programming |
| PROJ |
Projector |
| PROM |
Programmable Read Only Memory |
| PROP |
Propeller |
| PROT |
Protection |
| PROX |
Proximity |
| PRPHL |
Peripheral |
| PRR |
Power Ready Relay |
| PRSOV |
Pressure Regulating and Shut-Off Valve |
| PRSRZG |
Pressurizing |
| PRV |
Pressure Regulating Valve |
| PSA |
Passenger Service Adapter |
| PSCU |
Proximity Switch Control Unit |
| PSD |
Protected Switch Device |
| PSDU |
Power Supply Decoupling Unit |
| PSIC |
Proximity Sensor Interface Card |
| PSIU |
Passenger Service Information Unit |
| PSS |
Passenger Services System |
| PSU |
Passenger Service Unit |
| PSU |
Power Supply Unit |
| PT |
Point |
| PTC |
Positive Temperature Coefficient |
| PTP |
Programming and Test Panel |
| PTR |
Push to Reset |
| PTT |
Push-to-Test |
| PTT |
Push-to-Talk |
| PTU |
Power Transfer Unit |
| PU |
Parts Usage |
| PU |
Pick Up |
| PU |
Processing Unit |
| PURS |
Purser |
| PVI |
Paravisual Indicating |
| PVIS |
Passenger Visual Information System |
| PW |
Pratt & Whitney |
| PWCU |
Potable Water Control Unit |
| PWIP |
Potable Water Indication Panel |
| PWM |
Pulse Width Modulator |
| PWR |
Power |
| PWS |
Potable Water System |
| PWS |
Predictive WindShear |
| PWSP |
Potable Water Service Panel |
| PXE |
Pre-boot eXecution Environment |
| PYL |
Pylon |
| Q |
Pitch Rate |
| QAD |
Quick-Attach-Detach |
| QAM |
Quadrature Amplitude Modulation |
| QAR |
Quick Access Recorder |
| QAT |
Quadruple ARINC Transmitter |
| QCCU |
Quantity Calculation Control Unit |
| QD |
Quick Donning |
| QEC |
Quick Engine Change |
| QFRP |
Quartz Fiber Reinforced Plastic |
| QMU |
QAM Modulator Unit |
| QTY |
Quantity |
| R |
Red |
| R |
Right |
| R/C |
Rate of Climb |
| R/D |
Rate of Descent |
| R/I |
Radio/Inertial |
| R/I |
Removal/Installation |
| R/L |
Reading Light |
| R/T |
Radio Transmit |
| RA |
Radio Altimeter |
| RA |
Radio Altitude |
| RAA |
Ram Air Actuator |
| RAAS |
Runway Awareness and Advisory System |
| RAC |
Rotor Active Clearance |
| RACA |
Ram Air Channel Actuator |
| RACC |
Rotor Active Clearance Control |
| RACSB |
Rotor Active Clearance Start Bleed |
| RAD |
Radio |
| RAD |
Radome and Antenna Downconverter |
| RADIUS |
Remote Authentication Dial-In User Service |
| RADVR |
Random Access Digital Video Reproducer |
| RAI |
Ram Air Inlet |
| RAIMS |
Radio and Audio Integrating Management System |
| RALS |
Recording and Aircraft Locating System |
| RAM |
Random Access Memory |
| RAO |
Ram Air Outlet |
| RAS |
Ramp Actuation System |
| RAS/Wedge |
Ramp Aerial delivery System/Wedge |
| RAT |
Ram Air Turbine |
| RATC |
Remote Air Traffic Control |
| RB |
Resource BITE |
| RBA |
Right Bottom Aft |
| RBC |
Rear Bearing Chamber |
| RBCU |
Remote Braking Control Unit |
| RBF |
Right Bottom Forward |
| RBP |
Right Bottom Plug |
| RBPU |
Rudder and Brake Pedal Unit |
| RC |
Repetitive Chime |
| RCC |
Remote Charge Converter |
| RCC |
Remote Control Center |
| RCCB |
Remote Control Circuit Breaker |
| RCCBM |
RCCB Module |
| RCD |
RAAS Configuration DataBase |
| RCDC |
Ramp Cargo Door Controller |
| RCDR |
Recorder |
| RCF |
Right Center Fuselage |
| RCL |
Recall |
| RCP |
Reverse Current Protection |
| RCPT |
Receptacle |
| RCPTN |
Reception |
| RCS |
Radio Communication System |
| RCT |
Rear Center Tank |
| RCU |
Remote Control Unit |
| RCVR |
Receiver |
| RCVY |
Recovery |
| RCZ |
Rear Core Zone |
| RD |
Retro Drawing |
| RDC |
Remote Data Concentrator |
| RDL |
Resident Data Loader |
| RDU |
Receiver Decoder Unit |
| RDY |
Ready |
| READG |
Reading |
| RECIRC |
Recirculate |
| RECIRC |
Recirculation |
| RECONF |
Reconfiguration |
| RECT |
Rectifier |
| RED |
Reduction |
| REDCR |
Reducer |
| REDUND |
Redundancy |
| REF |
Reference |
| REFL |
Refuel |
| REFUEL |
Refueling |
| REG |
Regulator |
| REGUL |
Regulation |
| REIC |
Reconfigurable ETOPS Isolation Contactor |
| REL |
Release |
| REL |
Reluctance |
| REM |
Representative Model |
| REP |
Repository |
| RES |
Resistance |
| RET |
Retract |
| RETRD |
Retracted |
| REV |
Reverse |
| REV |
Revise |
| REV |
Revision |
| REW |
Recoverable Empty Weight |
| RF |
Radio Frequency |
| RFC |
Request for Change |
| RFI |
Radio Frequency Interference |
| RFI |
Request for Information |
| RFID |
Radio Frequency Identification |
| RFL |
Refueling |
| RFU |
Radio Frequency Unit |
| RFW |
Request for Work |
| RGAU |
Rate Gyro and Accelerometer Unit |
| RH |
Right Hand |
| RH |
Radio Height |
| RHEO |
Rheostat |
| RHL |
Rudder Hinge Line |
| RIU |
Recorder Interface Unit |
| RLA |
Reverser Lever Angle |
| RLC |
Reconfiguration Line Contactor |
| RLD |
Required Landing Distance |
| RLF |
Relief |
| R-LMF |
Right Side Local Maintenance Function |
| RLY |
Relay |
| RMC |
Removable Media Case |
| RMI |
Radio Magnetic Indicator |
| RMO |
Retrofit Modification Offer |
| RMP |
Radio and Audio Management Panel |
| RMP |
Radio Management Panel |
| RMT |
Remote |
| RNG |
Range |
| RNLG |
Reinforced Nose Landing Gear |
| RNP |
Required Navigation Performance |
| ROLR |
Roller |
| ROLS |
Remote Oil Level Sensor |
| ROM |
Read Only Memory |
| R-OMS |
Right Side Onboard Maintenance System |
| ROP |
Runway Overrun Protection |
| ROPS |
Runway Overrun Prevention System |
| ROT |
Runway Occupancy Time |
| ROTG |
Rotating |
| ROW |
Runway end Overrun Warning |
| RPCU |
Residual Pressure Control Unit |
| RPDR |
Reproducer |
| RPF |
Reporting Processing Function |
| RPLNT |
Repellent |
| RPS |
Remote Power Supply |
| RPSA |
Rotating Pressure Sensing Assembly |
| RPTG |
Repeating |
| RPTR |
Repeater |
| RPWL |
Residual Pressure Warning Light |
| RPWS |
Residual Pressure Warning Switch |
| RQRD |
Required |
| RR |
Rolls Royce |
| RRU |
Recorder Release Unit |
| RS |
Rear Spar |
| RS |
Restraint System |
| RSM |
Removable SIM Module |
| RSS |
Receiver Surveillance System |
| RST |
Reset |
| RSV |
Reserve |
| RSVR |
Reservoir |
| RTA |
Required Time of Arrival |
| RTA |
Right Top Aft |
| RTBC |
Refuel and Towing on Battery Contactor |
| RTC |
Reconfiguration Transfer Contactor |
| RTC |
Return To Cabin |
| RTD |
Resistance Temperature Device |
| RTE |
Route |
| RTF |
Right Top Forward |
| RTM |
Real Time Monitoring |
| RTN |
Return |
| RTNC |
Refuel and Towing on Normal Contactor |
| RTO |
Rejected TakeOff |
| RTOLW |
Regulatory TakeOff and Landing Weight |
| RTOW |
Regulatory TakeOff Weight |
| RTP |
Right Top Plug |
| RTR |
Router |
| RTRY |
Rotary |
| RTS |
Return to Seat |
| RTT |
Return To Tank |
| RTU |
Radar Transceiver Unit |
| RUD |
Rudder |
| RVCP |
Remote Video Control Panel |
| RVDT |
Rotary Variable Differential Transducer |
| RVR |
Runway Visual Range |
| RVS |
Refueling Video Surveillance |
| RVSM |
Reduced Vertical Separation Minimum |
| RVT |
Rotary Variable Transformer |
| RW |
Right Wing |
| RWDS |
Rearwards |
| RWR |
Radar Warning Receiver |
| RWS |
Retrieval Winch System |
| RWY |
Runway |
| RX |
Receive |
| S |
Minimum Slat Retract Speed (EFIS) |
| S |
South |
| S/C |
Step Climb |
| S/D |
Step Descent |
| S/MECH |
Shortening Mechanism |
| S/N |
Serial Number |
| S/W |
Software |
| SA |
Stress Analysis |
| SACU |
Stand Alone Compensator Unit |
| SACU |
Semi-Automatic Control Unit |
| SAD |
Stress Analysis Data |
| SAE |
Society of Automotive Engineers |
| SAF |
Safety |
| SAGB |
Step Aside GearBox |
| SAL |
System Address Label |
| SALSA |
Spot Array Light Supply Adapter |
| SAM |
Stress Analysis Manual |
| SAOHE |
Surface Air/Oil Heat Exchanger |
| SAR |
Smart ACMS Recorder |
| SAS |
Secondary Air System |
| SAT |
Static Air Temperature |
| SAT |
SATCOM |
| SATCOM |
Satellite Communication |
| SATURN |
Second-Generation Antijamming Tactical UHF Radio for NATO |
| SAU |
SATCOM Adapter Unit |
| SAV |
Starter Air Valve |
| SB |
Service Bulletin |
| SBAS |
Satellite Based Augmentation System |
| SBB |
Swift Broadband |
| SBIT |
Service Bulletin Information Trasmission |
| SC |
Single Chime |
| SCAV |
Scavenge |
| SCE |
Source |
| SCG |
System Configuration Guide |
| SCI |
Secure Communication Interface |
| SCM |
SDU Configuration Module |
| SCN |
Specification Change Notice |
| SCS |
Supplemental Cooling System |
| SCS |
Steering Control System |
| SCU |
Supplemental Control Unit |
| SCU |
System Control Unit |
| SD |
System Display |
| SDAC |
System Data Acquisition Concentrator |
| SDAC |
System Data Analog Converter |
| SDCF |
Smoke Detection Control Function |
| SDCU |
Smoke Detection Control Unit |
| SDF |
Smoke Detection Function |
| SDL |
Simple Data Loader |
| SDM |
Smart Diode Module |
| SDN |
System Description Note |
| SDOF |
Single Degree of Freedom |
| SDS |
Smoke Detection System |
| SDU |
Satellite Data Unit |
| SDW |
Specific Design Work |
| SE |
Simplified English |
| SE |
Section |
| SEAL |
Sealing |
| SEB |
Seat Electronic Box |
| SEC |
Secondary |
| SEC |
SECondary Computer |
| SEC |
Spoiler Elevator Computer |
| SECT |
Section |
| SEL |
Select |
| SEL |
Selected |
| SEL |
Selection |
| SEL |
Selector |
| SELCAL |
Selective Calling |
| SELV |
Selector Valve |
| SEPDC |
Secondary Electrical Power Distribution Center |
| SEQ |
Sequence |
| SEQ |
Sequential |
| SER |
Serial |
| SER |
Serial Number |
| SES |
Support Equipment Summary |
| SET |
Setting |
| SFAR |
Special Federal Aviation Regulation |
| SFB |
SAPHIR 400 Firing Bus |
| SFC |
Specific Fuel Consumption |
| SFCC |
Slat Flap Control Computer |
| SFE |
Seller Furnished Equipment |
| SFH |
Servo Fuel Heater |
| SG |
Starter Generator |
| SGCU |
Smart Galley Control Unit |
| SGCU |
Starter Generator Control Unit |
| SGSC |
Sheddable Ground Servicing Contactor |
| SGU |
Symbol Generator Unit |
| SH ABS |
Shock Absorber |
| SHCM |
System Heating Control Module |
| SHED |
Sheddable |
| SHED |
Shedding |
| SHF |
Super High Frequency |
| SHLD |
Shield |
| SHLD |
Shielding |
| SHR PN |
Shear Pin |
| SHT |
Short |
| SI |
Slip Indicator |
| SIC |
System Isolation Contactor |
| SICU |
System Interface Control Unit |
| SID |
Standard Instrument Departure |
| SIG |
Signal |
| SIL |
Speech Interference Level |
| SIL |
Service Information Letter |
| SIM |
Simulation |
| SIM |
Subscriber Identity Module |
| SIR |
Service Identification Request |
| SIRU |
Secure Interface Router Unit |
| SIS |
Standalone Identification System |
| SITR |
System Installation Technical Reference |
| SIU |
Server Interface Unit |
| SKT |
Socket |
| SLA |
Spot Light Adapter |
| SLC |
Starter Line Contactor |
| SLCA |
Streamlined Life Cycle Assessment |
| SLD |
Slide |
| SLD |
Sliding |
| SLT |
Slat |
| SM |
Standards Manual |
| SMC |
System Manager Controller |
| SMEL |
Seat-Mounted Emergency Light |
| SMK |
Smoke |
| SMKG |
Smoking |
| SMM |
System Management Module |
| SN |
Serial Number |
| SNGL |
Single |
| SNMP |
Simple Network Management Protocol |
| SNSG |
Sensing |
| SNSR |
Sensor |
| SO |
Shutoff |
| SOC |
Standard Operating Clearance |
| SOL |
Solenoid |
| SOMF |
Structural Overload Monitoring Function |
| SOV |
Shut-Off Valve |
| SPB |
Seat Power Box |
| SPC |
Smart PCMCIA Card |
| SPD |
Speed |
| SPDB |
Secondary Power Distribution Box |
| SPEC |
Specification |
| SPKR |
Speaker |
| SPL |
Sound Pressure Level |
| SPLR |
Spoiler |
| SPLY |
Supply |
| SPM |
Signal Processing Module |
| SPM |
Standard Practices Manual |
| SPP |
Software Pin Programming |
| SPP-BA |
SPP Broadcasting Application |
| SPPU |
Station Position Pick-off Unit |
| SPR |
Spar |
| SPRDR |
Spreader |
| SPS |
Seat Power Supply |
| SPSS |
Seat Power Supply System |
| SPST |
Single Pole Single Throw |
| SPU |
Starter Power Unit |
| SQ |
Squelch |
| SRF |
Servicing and aircraft condition parameters Reporting Function |
| SRI |
aircraft Structural Repair Identification |
| SRM |
Structural Repair Manual |
| SRPS |
Safe Redundant Power Supply |
| SRPSU |
Slide Release Power Supply Unit |
| SRPU |
Safe Redundant Power Unit |
| SRS |
Speed Reference System |
| SRT |
SATCOM Receiver Transmitter |
| SRU |
Shop Replaceable Unit |
| SSA |
Side Slip Angle |
| SSB |
Single Side Band |
| SSCVR |
Solid State Cockpit Voice Recorder |
| SSEC |
Static Source Error Correction |
| SSFDR |
Solid State Flight Data Recorder |
| SSH |
Secure SHell |
| SSID |
Service Set Identifier |
| SSM |
Sign Status Matrix |
| SSMM |
Solid State Mass Memory |
| SSP |
System Signal Processor |
| SSPC |
Solid State Power Controller |
| SSTDU |
Side Stick Transducer and Damper Unit |
| SSTU |
Side Stick Transducer Unit |
| SSU |
Side Stick Unit |
| STA |
Station |
| STAB |
Stabilizer |
| STAR |
Standard Terminal Arrival Route |
| STAT |
Static |
| STBY |
Standby |
| STD |
Standard |
| STE |
Secure Terminal Equipment |
| STELLA |
STair Electrical Light Load Adapter |
| STGR |
Stringer |
| STIVC |
Static Inverter Contactor |
| STL |
System Torque Limiter |
| STR |
SATURN |
| STR |
Stringer |
| STR |
Specific Tolerance Requirement |
| STRG |
Steering |
| STRK |
Stroke |
| STRM |
Secure open and Trip Resident Memory |
| STS |
Status |
| STU |
Secure Telephone Unit |
| STWG |
Stowage |
| SU |
Safety Unit |
| SUCT |
Suction |
| SUPPL |
Supplementary |
| SUPPR |
Suppressor |
| SURF |
Surface |
| SV |
Servovalve |
| SVA |
Stator Vane Actuator |
| SVCE |
Service |
| SVO |
Servo |
| SW |
Switch |
| SWLP |
SideWall Lock Panel |
| SWTG |
Switching |
| SyDPAP |
System Development and Process Assurance Plan |
| SYNC |
Synchro |
| SYNC |
Synchronize |
| SYNTHR |
Synthetizer |
| SYS |
System |
| T |
Trim |
| T |
Turn |
| T |
True |
| T.O |
TakeOff |
| T/C |
Top of Climb |
| T/D |
Top of Descent |
| T/F |
Track of a Fixed Waypoint |
| T/R |
Thrust Reverser |
| T/TISS |
Traffic and Terrain Integrated Surveillance System |
| T2C |
HP Compressor Inlet Temperature |
| T2CAS |
Traffic and Terrain Collision Avoidance System |
| T54 |
Low Pressure Turbine Inlet Temperature |
| TA |
Traffic Advisory |
| TAC |
Taxiing Aid Camera |
| TAC |
TACAN |
| TACAN |
Tactical Air Navigation |
| TACH |
Tachometer |
| TACS |
Taxiing Aid Camera System |
| TACT |
Tactical |
| TADD |
Trim Air Drive Device |
| TAS |
True Airspeed |
| TASE |
Training Areas of Special Emphasis |
| TAT |
Total Air Temperature |
| TAWS |
Terrain Awareness and Warning System |
| TB |
Terminal Block |
| TBC |
To Be Confirmed |
| TBH |
Tail Bearing Housing |
| TBO |
Time Between Overhauls |
| TBV |
Transient Bleed Valve |
| TC |
HP Turbine Case Pressure |
| TC |
Theoretical Contour |
| TC |
Thermocouple |
| TCA |
Throttle Control Assy |
| TCAF |
Turbine Cooling Air Front |
| TCAM |
Turbine Cooling Air Middle |
| TCAP |
TCAS Resolution Advisory Prevention |
| TCAR |
Turbine Cooling Air Rear |
| TCAS |
Traffic Alert and Collision Avoidance System |
| TCC |
Thrust Control Computer |
| TCC |
Turbine Case Cooling |
| TCC |
Turbine Clearance Control |
| TCG |
Time Corrected Gain |
| TCIU |
Telephone Communication Interface Unit |
| TCM |
Thrust Control Malfunction |
| TCPS |
Temperature Compensated Pressure Switch |
| TCS |
Temperature Control System |
| TCTL |
Tactile |
| TCU |
Throttle Control Unit |
| TCU |
Transport Cargo Unit |
| TDB |
Terrain DataBase |
| TDC |
Top Dead Center |
| TDS |
Technical Data Sheet |
| TE |
HP Stage Air Temperature |
| TE |
Trailing Edge |
| TEC |
Turbine Exhaust Case |
| TED |
Tool and Equipment Drawing |
| TEFO |
Total Engine Flame Out |
| TEI |
Tool and Equipment Index |
| TELECOM |
Telecommunications |
| TEM |
Tool and Equipment Manual |
| TEMP |
Temperature |
| TEO |
Engine Oil Temperature |
| TER |
Trailing Edge Rib |
| TFTS |
Terrestrial Flight Telephone System |
| TFU |
Technical Follow-up |
| T-GCAS |
Tactical Ground Collision Avoidance System |
| TGCU |
Terminal GPRS / UMTS Client Unit |
| TGT |
Target |
| TGT |
Turbine Gas Temperature |
| THD |
Total Harmonic Distortion |
| THERAP |
Therapeutic |
| THR |
Thrust |
| THRM |
Thermal |
| THRMST |
Thermostat |
| THROT |
Throttle |
| THROT PUSH |
Throttle Pusher |
| THS |
Trimmable Horizontal Stabilizer |
| THSA |
Trimmable Horizontal Stabilizer Actuator |
| TIC |
Turbine Impingement Cooling |
| TIT |
Turbine Inlet Temperature |
| TIU |
Terminal Interface Unit |
| TIV |
Temperature Isolation Valve |
| TK |
Tank |
| TKE |
Track Angle Error |
| TLA |
Throttle Lever Angle |
| TLC |
TR Line Contactor |
| TLCS |
Trolley Lift & Conveyance System |
| TLS |
Transcowl Locking System |
| TLS |
Trolley Lift System |
| TLU |
Travel Limitation Unit |
| TLV |
Tertiary Lock Valve |
| TM |
Torque Motor |
| TM |
Transportability Manual |
| TM |
Turbo Machinery |
| TMLB |
Technical and Maintenance LogBook |
| TMLLF |
Terrain Masking Low Level Flight |
| TMLLFC |
Terrain Masking Low Level Flight Computer |
| TMR |
Timer |
| TOD |
Time of Day |
| TOGA |
Takeoff/Go Around |
| TOGW |
Takeoff Gross Weight |
| TOIL |
Toilet |
| TOL |
Tolerance |
| TOMCONF |
Take-Off Multi Configuration |
| TOPA |
TakeOff Performance Application |
| TOPOC |
TakeOff & landing Performance Optimization Computer |
| TOS |
TakeOff Securing |
| TOT |
Total |
| TOW |
Takeoff Weight |
| TPIC |
Tire Pressure Indicating Computer |
| TPIS |
Tire Pressure Indicating System |
| TPR |
Turbofan Power Ratio |
| TPS |
Temporary Protection System |
| TPU |
Terminal Processor Unit |
| TPU |
Transceiver Processing Unit |
| TR |
Thrust Reverser |
| TR |
Transformer Rectifier |
| TR |
Transistor |
| T-R |
Transmitter-Receiver |
| TRA |
Throttle Resolver Angle |
| TRANS |
Transition |
| TRANSLG |
Translating |
| TRAS |
Thrust Reverser Actuation System |
| TRC |
Thrust Rating Computer |
| TRD |
Towed Radar Decoy |
| TRDV |
Thrust Reverser Directional Valve |
| TRF |
Turbine Rear Frame |
| TRGT |
Target |
| TRIG |
Trigger |
| TRK |
Track |
| TRLC |
TRU Line Contactor |
| TRLY |
Trolley |
| TRN |
Terrain Referenced Navigation |
| TROPO |
Tropopause |
| TRP |
Thrust Rating Panel |
| TRPU |
Thrust Reverser Power Unit |
| TRPV |
Thrust Reverser Pressurizing Valve |
| TRQE |
Torque |
| TRU |
Transformer/Rectifier Unit |
| TRV |
Travel |
| TS |
TCU Sensor |
| TSA |
Throttle Sensor Angle |
| TSAS |
Temperature Secondary Air System |
| TSD |
Trouble Shooting Data |
| TSF |
Trouble Shooting Function |
| TSFC |
Thrust Specific Fuel Consumption |
| TSM |
Trouble Shooting Manual |
| TSM |
Tactical Situation Management |
| TSP |
Tank Signalling Processor |
| TSPA |
Tank Signal Processor A |
| TSPB |
Tank Signal Processor B |
| TSSU |
Transmission Speed Sensor Unit |
| TSU |
Torque Sensor Unit |
| TT |
Trim Tank |
| T-TAD |
Tactical Terrain Awareness Display |
| TTL |
Transistor Transistor Logic |
| TTOL |
Taxi, Takeoff and Landing |
| TTS |
Trim Tank System |
| TU |
Tapping Unit |
| TUCD |
Thermostat Unit Control Device |
| TURB |
Turbine |
| TURB |
Turbulence |
| TURB |
Turbulent |
| TURBOT |
Turbine Overheat Detector |
| TV |
Television |
| TVA |
Tunable Vibration Absorber |
| TVACU |
Tunable Vibration Absorber Control Unit |
| TVAPS |
Tunable Vibration Absorber Power Supply |
| TVAS |
Tunable Vibration Absorber System |
| TVBC |
Turbine Vane and Blade Cooling |
| TWDC |
Tank Wall Data Concentrator |
| TWLU |
Terminal Wireless LAN Unit |
| TWP |
Tank Wall Processor |
| TX |
Transmit |
| TYP |
Typical |
| U/FLOOR |
Underfloor |
| U/S |
Unserviceable |
| UADF |
User Application Definition File |
| UD |
Upper Deck |
| UDCC |
Upper Deck Cargo Compartment |
| UDCD |
Upper Deck Cargo Door |
| UDP |
User Datagram Protocol |
| UEB |
Underseat Electronic Box |
| UERF |
Uncontained Engine Rotor Failure |
| UF |
Underfrequency |
| UHF |
Ultra High Frequency |
| UICDL |
User Interface Configuration Download List |
| UIL |
Upper Integrity Limit |
| ULA |
Universal Light Adapter |
| ULA M |
Universal Light Adapter Module |
| ULB |
Underwater Locator Beacon |
| ULD |
Unit Load Device |
| ULLI |
Understep LED Light |
| UMBRL |
Umbrella |
| UMS |
User Modifiable Software |
| UMTS |
Universal Mobile Telecommunications System |
| UNBAL |
Unbalance |
| UNBAL |
Unbalanced |
| UND |
Under |
| UNDERPRESS |
Underpressure |
| UNIV |
Universal |
| UNLK |
Unlock |
| UNLKD |
Unlocked |
| UPLK |
Uplock |
| UPLKD |
Uplocked |
| UPPR |
Upper |
| UPR |
Upper |
| USB |
Universal Serial Bus |
| USB |
Upper Sideband |
| UTC |
Universal Time Coordinated |
| UV |
Ultra-Violet |
| UV |
Under Voltage |
| UWBS |
Universal Wireless Backbone System |
| V |
Valve |
| V/S |
Vertical Speed |
| V/U |
Very and Ultra high frequency |
| V/UHF |
Very and Ultra High Frequency |
| VAC |
Voltage Alternating Current |
| VACS |
Vacuum Cleaner System |
| VACU |
Vacuum |
| VAFN |
Variable Area Fan Nozzle |
| VAR |
Variable |
| VAR |
Variation |
| VBV |
Variable Bleed Valve |
| VC |
Ventilation Controller |
| VCC |
Video Control Center |
| VCI |
Video Control Insert |
| VCM |
Video Camera Module |
| VCO |
Voltage Controlled Oscillator |
| VCP |
Video Control Panel |
| VCRU |
Vapor Cycle Refrigeration Unit |
| VCS |
Ventilation Control System |
| VCU |
Video Control Unit |
| VD |
Vertical Display |
| VDAR |
Virtual DAR |
| VDC |
Voltage Direct Current |
| VDEV |
Vertical Deviation |
| VDHM |
Variable Displacement Hydraulic Motor |
| VDL |
VHF Data Link |
| VDR |
VHF Data Radio |
| VDU |
Video Display Unit |
| VDU |
Video Distribution Unit |
| VE |
Virtual Equipment |
| VEL |
Velocity |
| VENT |
Ventilation |
| VERT |
Vertical |
| VFG |
Variable Frequency Generator |
| VFR |
Visual Flight Rules |
| VG |
Vertical Gyro |
| VG |
Ground Terminal Module |
| VGM |
Versatile Graphical Module |
| VHCU |
Versatile Heating Control Unit |
| VHDU |
Versatile Heating Data Unit |
| VHF |
Very High Frequency |
| VHV |
Very High Voltage |
| VIB |
Vibration |
| VIGV |
Variable Inlet Guide Vane |
| ViMS |
Video Management System |
| VIMU |
Video Multiplexer Unit |
| VL |
Virtual Link |
| VLF |
Very Low Frequency |
| VLV |
Valve |
| VM |
Voltmeter |
| VMU |
Video Modulator Unit |
| VN |
Grounding Point |
| VOD |
Video On Demand |
| VODDSU |
VOD Data Server Unit |
| VODMU |
VOD Modulator Unit |
| VODSU |
VOD Server Unit |
| VOL |
Volume |
| VOR |
VHF Omnidirectional Range |
| VORV |
Variable Oil Reduction Valve |
| VOX |
Voice Activation |
| VPU |
Video Processing Unit |
| VQAR |
Virtual QAR |
| VR |
Rotation Speed |
| VRU |
Video Reproducer Unit |
| VSB |
Vendor Service Bulletin |
| VSC |
Vacuum System Controller |
| VSCF |
Variable Speed Constant Frequency |
| VSEB |
Video Seat Electronic Box |
| VSI |
Vertical Speed Indicator |
| VSV |
Variable Stator Vane |
| VSVA |
Variable Stator Vane Actuator |
| VSWR |
Voltage Standing Wave Ratio |
| VTP |
Vertical Tail Plane |
| VTR |
Video Tape Reproducer |
| VTS |
Vacuum Toilet System |
| VU |
Virtual Unit |
| VV |
Velocity Vector |
| W |
West |
| W |
White |
| WABSIC |
Wheel And Brake System Integrated Component |
| WACS |
Wireless Airport Communication System |
| WAI |
Wing Anti-Ice |
| WAP |
Wireless Access Point |
| WARN |
Warning |
| WBA |
Weight and Balance Application |
| WBBC |
Weight and Balance Backup Computation |
| WBC |
Weight & Balance Computer |
| WBM |
Weight and Balance Manual |
| WBS |
Weight and Balance System |
| WD |
Warning Display |
| WD |
Wing Datum |
| WD |
Wiring Diagram |
| WDB |
Wall Disconnect Box |
| WDM |
Wiring Diagram Manual |
| WFF |
Wing-to-Fuselage Fairing |
| WFOV |
Wide Field of View |
| WG |
Wire Group |
| WG |
Wing |
| WGD |
Windshield Guidance Display |
| WGDC |
Windshield Guidance Display Computer |
| WGDS |
Windshield Guidance Display System |
| WGL |
Wireless Ground Link |
| WHC |
Window Heat Computer |
| WHL |
Wheel |
| WINDML |
Windmilling |
| WIP |
Wing Ice Protection |
| WIPCU |
Water Ice Protection Control Unit |
| WIPDU |
Water Ice Protection Data Unit |
| WIPS |
Wing Ice Protection System |
| WIS |
Wireless Intercommunication System |
| WLAN |
Wireless Local Area Network |
| WLC |
Wing Lower Cover |
| WLDP |
Warning Light Display Panel |
| WLG |
Wing Landing Gear |
| WLM |
Wireless LAN Manager |
| WLU |
Wireless LAN Unit |
| WMEL |
Wall Mounted Emergency Light |
| WOD |
Word Of the Day |
| WoffW |
Weight off Wheels |
| WOJ |
Weight On Jacks |
| WOS |
WOW Override Switch |
| WOW |
Weight On Wheels |
| WPT |
Waypoint |
| WPU |
Wireless Portable Unit |
| WRDC |
Wheel Remote Data Concentrator |
| WRG |
Wiring |
| WRK |
Work |
| WRK |
Working |
| WS |
Wireless System |
| WSC |
Window Shade Controller |
| WSCS |
Wheel Steering Control System |
| WSHLD |
Windshield |
| WSSG |
Warning System Symbol Generator |
| WT |
Weight |
| WTB |
Wing Tip Brake |
| WTR |
Water |
| WWS |
Water/Waste System |
| WX |
Weather Mode (ND) |
| WXR |
Weather Radar |
| X |
Cross |
| X |
Trans |
| X BLEED |
Crossbleed |
| X FEED |
Crossfeed |
| X LINE |
Crossline |
| X VALVE |
Cross Valve |
| XBAR |
Crossbar |
| XCHECK |
Crosscheck |
| XCVR |
Transceiver |
| XDCR |
Transducer |
| XFMR |
Transformer |
| XFR |
Transfer |
| XING |
Crossing |
| XLOAD |
Crossload |
| XLTR |
Translator |
| XMSN |
Transmission |
| XMTR |
Transmitter |
| XPDR |
Transponder |
| X-TALK |
Cross-talk |
| XWIND |
Crosswind |
| Y |
Yellow |
| Y/C |
Economy Class |
| Z |
Greenwich Mean Time |
| Z |
Zone |
| ZC |
Zone Controller |
| ZFCG |
Zero Fuel Center of Gravity |
| ZFW |
Zero Fuel Weight |