Abbreviation Term
3D Three Dimensional (Lat, Long, Alt)
4D
Four Dimensional (Lat, Long, Alt, Time)
A
Ampere
A
Alternate
A
Amber
A
Area
A
Air
A.ICE Anti-ice, Anti-icing
A.T.I.S
Airbus Technical Information System
A/BRK Autobrake Aircraft
A/C A/COLL Anti-Collision Analog/Digital
A/D Analog to Digital Converter (conversion)
A/DC Analog-to-Digital Converter
A/F
Auto Flight
A/G Air to Ground
A/L Airline
A/N Alphanumeric
A/N SIZE
Alpha Numeric Size
A/R
Audio Reproducer
A/S
Auto Stabilization
A/S Airspeed
A/SKID Anti-Skid
A/STAB
Auto Stabilizer
A/T
Adjustment/Test
A/THR A/XFMR Autothrust Autotransformer
AA
Arithmetical Average
AA
Airworthiness Authorities
AAA
Airworthiness Approval Attestation
AAAH
Airbus Approved Abbreviations Handbook
AAC Airline Administrative Communications Analog Air Data Computer
AADC
Analog Air Data Computer
AAL
Above Aerodrome Level
AAMG
Airbus Application Management Group
AAP Additional Attendant Panel
AAR Air-to-Air Refueling Abbreviation
ABCD
Airbus Collective Data Dictionary
ABCM
Alternate Brake Control Manifold
ABCU Alternate Braking Control Unit
ABD Airbus Directive and Procedure
ABDC Avionics Broadcast Data Collector
ABM
Abeam
ABM APU Build-up Manual
ABN
Abnormal
ABNORM Abnormal
ABRN Airborne
ABS Autobrake System
ABS VAL
Absolute Value
ABSELV Alternate Brake Selector Valve
ABSORB Absorber
ABV Above
AC Airplane Characteristics for Airport Planning
AC Alternating Current
AC
Advisory Circular
ACARS Aircraft Communication Addressing and Reporting System
ACAS
Airborne Collision Avoidance System
ACC
Area Control Centre
ACC Active Clearance Control
ACCEL Acceleration/Accelerate
ACCESS
Accessory
ACCLRM Accelerometer
ACCU Accumulator
ACCUR Accuracy
ACD
Airworthiness Certification Dossier
ACD
Airframe Certification Document
ACD Additional Control Device
ACDB
Aircraft Component Data Base
ACE
Altimeter Control Equipment
ACE
Airbus Concurrent Engineering
ACFT Aircraft
ACFU
Aircraft Check Follow Up
ACG
Aircraft Center of Gravity
ACGS Aircraft GSM Server
ACIA
Asynchronous Communications Interface Adaptor
ACJ
Advisory Circular-Joint
ACK Acknowledge
ACL
Aircraft Configuration List
ACM
Aircraft Conversion Manual
ACM
Abbreviated Component Maintenance Manual
ACM
Aircraft Configuration Matrix
ACM Air Cycle Machine
ACMB
Aircraft Configuration Management Board
ACMM Abbreviated Component Maintenance Manual
ACMM
Aircraft Configuration Meta Model
ACMP Airframe Condition Monitoring Procedure
ACMR Aircraft Configuration Management Rules
ACMS Aircraft Condition Monitoring System
ACMT
Aircraft Component Management Team
ACN Aircraft Classification Number
ACO
Airworthiness Certification Office
ACOB
Automatic Call Out Box
ACOC Air Cooled Oil Cooler
ACP
Altimeter Check Point
ACP Area Call Panel
ACP Audio Control Panel
ACQ Acquire
ACQN Acquisition
ACR Avionics Communication Router
ACRT
Additional Cross Reference Table
ACS
Access
ACS
Alternating Current Supply
ACSC Air Conditioning System Controller
ACT Additional Center Tank
ACT Active
ACT
Activity
ACTD
Actuated
ACTG Actuating
ACTIV Active
ACTN
Action
ACTR Actuator
ACTVN Activation
ACTVT Activate
ACU
Antenna Coupler Unit
ACU Air Cooling Unit
ACVR
Alternating Current Voltage Ratio
AD
Aerodrome
AD
Airplane Datum
AD
Airworthiness Directive
A-D
Airbus Deutschland
ADAM
Airbus Spares Distribution and Materials System
ADAU
Auxiliary Data Acquisition Unit
ADB Area Distribution Box
ADB Airport DataBase
ADB
Aeronautical DataBase
ADC Air Data Computer
ADC
Airbus Delivery Centre
ADCL
Airworthiness Directives Compliance List
ADCN Avionics Data Communication Network
ADCOMS
Advanced Configuration Management System
ADCSIP
Acceptance and Delivery Customer Satisfaction Improvement Programme
ADD Addition, Additional
ADD
Aircraft Description Data Base
ADD
Aircraft Design Declaration
ADD BY
Added By
ADF Automatic Direction Finder
ADG Air Driven Generator
ADI Attitude Director Indicator
ADIRS Air Data/Inertial Reference System
ADIRU Air Data/Inertial Reference Unit
ADJ
Adjust
ADJMT
Adjustment
ADL
Airborne Data Loader
ADL
Aircraft Data Loader
ADM Air Data Module
ADMZ Aircraft DeMilitarized Zone
ADO
Airbus Documentation Office
ADOPT
Airbus Design and Operational Philosophy in Training
ADPM Aircraft Deactivation Procedures Manual
ADPTN
Adaptation
ADPTR Adapter
ADR
Advisory Route
ADR Air Data Reference
ADRES
Aircraft Documentation Retrieval System
ADRS
Address
ADS Automatic Dependent Surveillance
ADS Air Data System
ADU
Align Display Unit
ADU Area Distribution Unit
ADV Advisory
A-E
Airbus Espana
AEB
Airline Engineering Bulletin
AECMA
The European Association of Aerospace Industries
AEDS
Axle Equipment Drive Shaft
AEEC
Airlines Electronic Engineering Committee
AERO
Aviation Routine Weather Report
AES Aircraft Earth Station
AESS Aircraft Environment Surveillance System
AESU Aircraft Environment Surveillance Unit
AEVC Avionics Equipment Ventilation Computer
AEX
Access Authorized
AF
DME Arc to Fixed Waypoint
AF
All Freighter
AF Audio Frequency
AF
Acceptance Flight
A-F
Airbus France
AFB
Antifriction Bearing
AFC
Automatic Frequency Control
AFCS
Automatic Flight Control System
AFDX Avionics Full Duplex Switched Ethernet
AFECU Automatic Fire Extinguishing Control Unit
AFFECTD Affected
AFFIRM Affirmative
AFIS
Airline In Flight Information System
AFL Auto Flush
AFM Aircraft Flight Manual
AFMC Auxiliary Fuel Management Computer
AFMR Airframer
AFN ATS Facilities Notification
AFR
Airframe
AFS Automatic Flight System
AFTN
Aeronautical Fixed Telecommunication Network
AFTR After
AFU
Artificial Feel Unit
AGB Accessory Gearbox
AGB Angle Gearbox
AGC Automatic Gain Control
AGC APU Generator Contactor
AGE Aircraft Ground Equipment
AGG
Airbus General Guide
AGL Above Ground Level
AGMT
Augment
AGP Alternate Gauging Processor
AGS Air Generation System
AGU Air Generation Unit
AGW Actual Gross Weight
AH
Ampere Hour
AHP
Anti-Hijacking Panel
AHRS
Attitude and Heading Reference System
AHRU
Attitude and Heading Reference Unit
AI
Anti-Icing
AIB
Airbus Industrie
AIBU Advanced Illumination Ballast Unit
AIC
Access Illustration Cards
AIC
Airbus Integrated Company
AICC
Aviation Industry CBT Committee
AICU Anti Ice Control Unit
AID
Aircraft Installation Delay
AIDA
Airbus Industrie Drawing Access
AIDA
Attestation Integrated Delta Aggregation
AIDS Aircraft Integrated Data System
AIG
Accident Investigation
AIL Aileron
AIM Aircraft Integrated Maintenance
AIM/CRM
Airbus Integrated Management/Cockpit Resource Management
AIM-FANS
Airbus Interoperable Modular-Future Air Navigation Sys
AIMI Avionics Information Management Interface
AIMS
Airbus Industrie Material Specification
AIMS
Airbus Inventory Management System
AIMS
Airbus Improvement Management System
AINA
Airbus North America
AINS Aircraft Information Network System
AIP Attendant Indication Panel
AIP
Aeronautical Information Publication
AIPS
Airbus Process Specification
AIQI
Airbus Industrie Quality Instruction
AIR
Aircraft Inspection Report
AIRCOND
Air Conditioning
AIRMAN
Aircraft Maintenance Analysis
AIS Audio Integrated System
AIS
Aeronautical Information Service
AISI
American Iron and Steel Institute
AITM
Airbus Test Method
AL
Airline
ALERFA
Alert Phase
ALF
Aft Looking Forward
ALHP
Airframe Life-History Program
ALIGN Alignment
ALIGND Aligned
ALLWD Allowed
ALNA Airline Network Architecture
ALPHA Angle-of-Attack
ALPHANUM
Alphanumerical
ALS
Approach Light System
ALSCU Auxiliary Level Sensing Control Unit
ALT Altitude
ALT ACQ
Altitude Acquire
ALT TO
Alternate To
ALTM Altimeter
ALTN Alternate, Alternative
ALTU Annunciator Light Test Unit
ALU
Arithmetic and Logic Unit
AM Amplitude Modulation
AM
Airbus Means and Methods Document
AMB Ambient
AMC
Acceptable Means of Compliance
AMDB Airport Mapping DataBase
AMI
Airline Modifiable Information
AMJ
Advisory Material-Joint
AMM Aircraft Maintenance Manual
AMM
Ammeter
AMP
Ampere
AMP
Amperage
AMPL Amplifier
AMS
Aircraft Modification Status
AMS
Aerospace Material Specification
AMS
Aeronautical Material Specifications
AMS Air-ground Message Server
AMTOSS
Aircraft Maintenance Task Oriented Support System
AMU Audio Management Unit
AN
Air Navigation
ANCE
Announce
AND
Aircraft Nose Down
ANI Analog Input
ANLG Analogic
ANN Annunciator
ANN LT
Annunciator Light
ANNCE Announce
ANNCMT Announcement
ANO Analog Output
ANPT
Aeronautical National Taper Pipe Threads
ANSA At Nearest Suitable Airport
ANSI American National Standards Institute
ANSU Aircraft Network Server Unit
ANT Antenna
ANU
Aircraft Nose Up
AO
Access Opening
AOA Angle Of Attack
AOAS
Angle of Attack Sensor
AOC Airline Operational Control
AOC
Air Operator's Certificate
AOD Audio on Demand
AOG Aircraft On Ground
AOHX Air/Oil Heat Exchanger
AOLS
Airbus On-Line Services
AOM Aircraft Operating Manual
AOMT Airbus Onboard Maintenance Tool
AOP
Airbus Operational Plan
AOT
All Operator Telex
AP
Airbus Procedure
AP Autopilot
AP
Airborne Printer
AP/FD Autopilot/Flight Director
APASHE
Aircraft Publication Automated Shipping Expedite
APC
Area Positive Control
API Application Programming Interface
APLC Aircraft Power Line Conditioner
APM ARINC Processing Module
APM
Airport Planning Manual
APM
Aircraft Performance Monitoring Program
APP Approach Control-Approach Control Office
APP Appearance
APPL Application
APPR Approach
APPROX Approximately
APPU Asymmetry Position Pick Off Unit
APQ
Airline Pre-Qualification
APS
Aircraft Prepared for Service
APS
Auxiliary Power Supply
APS Avionic Printing Specification
APS
Absolute Pressure Sensor
APU Auxiliary Power Unit
APU AFE APU Automatic Fire Extinguishing Control Unit
AQP
Advanced Qualification Program
AR As Required
AR
Audio Reproducer
ARC Air Refueling Computer
ARG
Arresting Gear or Hook
ARINC Aeronautical Radio Incorporated
ARM
Airworthiness Review Meeting
ARM Aircraft Recovery Manual
ARMD
Armed
ARMG
Arming
ARMT
Armament
ARN
Aircraft Registration Number
ARND
Around
ARO
After Receipt Order
ARP Aerospace Recommended Practice
ARP
Aerodrome Reference Point - Airport Reference Point
ARPT Airport
ARR
Arrival, Arriving
ARS
Airworthiness Review Sheet
ART
Active Repair Time
ARTCC
Air Route Traffic Control Centre
ARTCLD
Articulated
ARTF Artificial
ARU Audio Reproducer Unit
ARU Aircraft Router Unit
ARV Alternate Refill Valve
AS
Airspeed
AS
Airscoop
ASA All Speed Aileron
ASA Audio and Sign Adapter
ASAP
As soon as possible
ASCII American Standard Code for Information Interchange
ASCO
Airbus Service Company Inc.
ASD Accelerate Stop Distance
ASDC
Airline Service Data Collection
ASE Airborne Support Equipment
ASE
Airbus Supplied Equipment
ASF
Amperes per Square Foot
ASG
Airbus Security Group
ASI Airspeed Indicator
ASIC Application Specific Integrated Circuits
ASM
American Society for Metals
ASM Aircraft Schematics Manual
ASMA
Aircraft Systems Maintenance Aids
ASN Aerospatiale Norme (Standard)
ASP Audio Selector Panel
ASPSU Autonomous Standby Power Supply Unit
ASR
Airport Surveillance Radar
ASSY Assembly
ASYM Asymmetric(al)
AT
Autothrottle
AT Autothrust
ATA Air Transport Association of America
ATA Actual Time of Arrival
ATAM
Airbus Takeoff Analysis Module
ATB
ATA 100 Breakdown
ATC Air Traffic Control
ATC
Airbus Training Center
ATCA
Air Traffic Control Board
ATCDB
Aircraft Technical Characteristics Data Base
ATCH
Attach(ment)
ATCI Air Traffic Control and Information
ATCK
Attack
ATCRB Air Traffic Control Radar Beacon
ATCSS
Air Traffic Control Data Link Signalling
System
ATD
Aircraft Technical Definition
ATD Actual Time of Departure
ATE Automatic Test Equipment
ATEC
Automatic Test Equipment Complex
ATI Air Transport Indicator
ATIMS Air Traffic and Information Management System
ATIS Automatic Terminal Information Service
ATLAS Abbreviated Test Language for Avionics Systems
ATLAS
Abbreviated Test Language for All Systems
ATM
Aircraft Transportability Manual
ATM Air Traffic Management
ATM
Available Ton-Mile
ATMG
Airbus Technical Management Group
ATMS
Advanced Text Management System
ATN Aeronautical Telecommunications Network
ATO
Authorization to Offer
ATR Austin Trumbull Radio
ATRCCS Automatic Turbine Rotor Clearance Control System
ATS Air Traffic Service
ATS
Airbus Technical Specification
ATS Autothrottle System
ATS
Autothrust System
ATSU Air Traffic Service Unit
ATT Attitude
ATT
Attitude Reference
ATTEN
Attenuation
ATTND Attendant
ATZ
Aerodrome Traffic Zone
AUD
Audio
AUDSWTGSYS
Audio Switching System
AUDSWTGUNIT
Audio Switching Unit
A-UK
Airbus UK
AUTH
Authorize
AUTO Automatic
AUTOCAL
Autocalibration
AUTOLAND Automatic Landing
AUW All-Up Weight
AUX Auxiliary
AVAIL Available
AVAIL Availability
AVG
Average
AVIONICS
Aviation Electronics
AVNCS Avionics
AVOD
Audio/Video on Demand
AVRS
Audio/Video Recording System
AVS Avionics Ventilation System
AWACS
Advanced Warning (on) Aircraft Commercial Sales
AWG
American Wire Gage
AWL Aircraft Wiring List
AWLS
All Weather Landing System
AWM Aircraft Wiring Manual
AWS
American Welding Society
AWY Airway
AX
Access Authorized
AX Longitudinal Acceleration
AY Lateral Acceleration
AZ
Vertical Acceleration
AZ Azimuth
AZFW Actual Zero Fuel Weight
B Blue
B/B
Back-Beam
B/C Business Class
B/D
Bottom of Descent
BAABI
Basic Approved ATA Breakdown Index
BAF
Baffle
BAF BITE Access Function
BAFO
Best and Final Offer
BAG Bandwidth Allocation Gap
BAL
Basic Assembly Language
bar
10² kPa
BARC
Barometric Altitude Rate Computer
BARO Barometric
BAT Battery (Electrical)
BBAND Broadband
BBRG
Ball Bearing
BC
Baggage Container Train
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
BCU Brake Control Unit
BCWP
Budgeted Cost of Work Performed
BCWS
Budgeted Cost of Work Scheduled
BDD
BITE Description Document
BDIE
Base de Données Installation Electrique
BDLI
Bundesverband der Deutschen Luft-und Raumfahrt Industrie
BEA
Bureau d'Enquête Accident
BEL CRK
Bellcrank
BER
Beyond Economical Repair
BETW
Between
BEV
Bevel
BEW
Basic Empty Weight
BFD
Bi-Folding Door
BFDAS
Basic Flight Data Acquisition System
BFE Buyer Furnished Equipment
BFEMS
BFE Management System
BFO Beat Frequency Oscillator
BFR
Buffer
BG
Build Group (Assembly Group)
BGC
Build Group Component
BGM Boarding Music
BGS
Build Group Stack-Up
BH Block Hours
BHD
Bulkhead
BIST
Built-in Self Test
BITE Built-in Test Equipment
BIU BITE Interface Unit
BK
Black
BKFLW Backflow
BKUP Backup
BL Bleed
BLC
Basic Lines Catalog
BLES Brake Life Extension System
BLG Body Landing Gear
BLK Block
BLK Black
BLKT
Blanket
BLOW Blower
BLST Ballast
BLT
Bolt
BLV Bleed Valve
BLW
Below
A
Alternate
BLWG Blowing
BM
Beam
BMC BMI Bleed Monitoring Computer
BMS
BITE Monitoring Interface Bulletin Météo Spécial
BND
Bonded
BNDG
Bonding
BNDRY BNR Boundary Binary
BNR
Binary Words
BO
Body Odour
BO
Blocking Oscillator
BOH
Brake-Off Weight
BOT Bottom
BOT Begin of Tape
BP
Bottom Plug
BPTU
Brake Pedal Transmitter Unit
BR
Brown
BRC
Brace
BRD
Braid
BRDG
Bridge
BRG
BRK Brake
BRKNG Braking
BRKR Breaker
BRKS
Brakes
BRKT Bracket
BRT
Bright, Brightness
BSCS
Braking and Steering Control System
BSCU
Braking and Steering Control Unit Bushing
BSU Beam Steering Unit
BT
Bus Tie
BTA
Bogie Trim Actuator
BTC Bus Tie Contactor
BTCM Brake Temperature Compensation Module
BTL Bottle
BTMS Brake Temperature Monitoring System
BTMU
Brake Temperature Monitoring Unit
BTN
Button
BTR Bus Tie Relay
BTS Base Transceiver Station
BTS
Brake Temperature Sensor
BTU
British Thermal Unit
BU Battery Unit
BUS Busbar
BWS Body Wheel Steering
BYDU Back-Up Yaw Damper Unit
BYP Bypass
C Celsius, Centigrade
C Cyan
C Close
C
Clear
c
Equal Margin
C
Cold (Electric Point)
C
Comparator
C
Convertible
C of A
Certificate of Airworthiness
C/B Circuit Breaker
C/L Check List
C/M
Command/Monitor
C/M
Crew Member
C/O Change Over
C/S Call Sign
C/SSR
Cost/Schedule Status Report
CA
Constituent Assembly
CA Cable Assembly
CA
Cable
CA/CRL Certification Authority/Certificate Revocation List
CAA
Civil Aviation Authority
CAA
Central Aviation Archive
CAATS
Computer Assisted Aircraft Trouble Shooting
CAB Cabin
CAB PRESS
Cabin Pressurization
CAD
Computer Aided Design
CADB
Component for Attestation Data Base
CADETS
Computer Assisted Documentation Education Tutorial System
CAG
Circulation Aérienne Générale
CAGE
Commercial And Government Entity
CAI
Combustion Area Inspection
CAL Calibration, Calibrated
CALC
Cargo Acceptance and Load Control
CAM
Computer Aided Manufacturing
CAM Cabin Assignment Module
CAM
Customer Acceptance Manual
CAN
Canopy
CAN Controller Area Network
CANC
Cancel
CANC Cancellation
CANCD Cancelled
CANTIL
Cantilever
CAO
Cargo Aircraft Only
CAOA Corrected Angle Of Attack
CAOM Cabin Attendant Operating Manual
CAP
Capacitor
CAPLTY
Capability
CAPT Captain
CAR
Civil Aviation Requirements
CAR
Cargo
CARE
Continuing Airframe - Health Review and Evaluation
CARE
Common Airbus Requirements Engineering
CARP
Carpet
CAS
Computed Air Speed
CAS
Collision Avoidance System
CAS Calibrated Air Speed
CAS
Calculated Air Speed
CAT
Clear Air Turbulence
CAT Category
CATCH Complex Anomaly Tracking and Search
CAUT Caution
CAUT LT
Caution Light
CBAL
Counterbalance
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
CBO
Cycles between Overhaul
CBORE
Counterbore
CBR
California Bearing Ratio
CBS
Cost Breakdown Structure
CBSV
Cycles Between Scheduled Visits
CC Current Comparator
CCB
Configuration Control Board
CCC Crash Crew Chart
CCC
Component Change Card
CCC
Configuration Control Committee
CCD Cursor Control Device
CCG Cabin Configuration Guide
CCITT
Consultative Committee International Telegraphy & Teleph
CCMD
Configuration Conformity Management and Documentation
CCOM Cabin Crew Operating Manual
CCQ
Cross Crew Qualification
CCR Credit Card Reader
CCR
Customer Change Register
CCRC Cabin Crew Rest Compartment
CCRM Cabin Crew Rest Module
CCS Cabin Communications System
CCW Counter Clockwise
CD
Count Drag
CD
Cold Drawn
CD Control Display
CD Compact Disk
CDAM Centralized Data Acquisition Module
CDB
Configuration DataBase
CDBT
Component Design and Build Team
CDC Cargo Door Controller
CDDS
Component Documentation Data System
CDE
Consumption Data Exchange Card
CDIM
Component Data Instruction Manual
CDIS
Customization Definition Information System
CDL Configuration Deviation List
CDLCU Cockpit Door Locking Control Unit
CDLS CDP Cockpit Door Locking System Compressor Discharge Pressure
CD-ROM
Compact Disc - Read Only Memory
CDS
Cold Drawn Steel
CDS CDS CDSS
CDSU
Component Documentation Status Control and Display System Cockpit
Door Surveillance System Cockpit Door Surveillance Unit
CDT
Cabin Door Trainer
CDU Control and Display Unit
CDU Center Drive Unit
CD-WD
Component Data Working Document
CE
Central Entity
CE
Change Event
CECAM
Centralized Cabin Monitoring
CED Cooling Effect Detector
CEET
Cabin Emergency Evacuation Trainer
CEL CELLI Component Evolution List Ceiling Emergency LED Light
CEO
Chief Executive Officer
CEPT
Council of European Posts and Telegraphs
CER Contrôle Essais et Réception
CEV
Clutch Electro Valve
CEV Centre d'Essais en Vol
CF
Course to a Fixed Waypoint
CF
Configuration File
CFDIU Centralized Fault Display Interface Unit
CFDS Centralized Fault Display System
CFE
Customer Furnished Equipment
CFH
Cubic Feet per Hour
CFIT
Controlled Flight Into Terrain
CFM
Cubic Feet per Minute
CFM CFMI Cable Fabrication Manual CFM International
CFP
Computerized Flight Plan
CFR
Code of Federal Regulations
CFRP Carbon Fiber Reinforced Plastic
CFS
Cold Finished Steel
CFS Cabin File Server
CFVCU Cargo Fire Verification Control Unit
CFVS Cargo Fire Verification System
CG Center of Gravity
CGC
Customer Ground Check
CGCS Center of Gravity Control System
CGM
Computer Graphics Metafile
CH
Centre Hatrack
CH Character
CH
Charge
CHAM
Chamfer
CHAN Channel
CHAS
Chassis
CHG Change
CHK
Check
CHM
Chime
CHMBR Chamber
CHRG Charge
CHRO Chronometer
CI
Course to an Intercept
CI
Conversion Instruction
CI
Configuration Item
Ci
Curie
CI
Cast iron
CI Cost Index
CICS
Customer Information Control System
CICS/VS
Customer Information Control System/Virtual Storage
CIDS Cabin Intercommunication Data System
CIM
Continuous Image Microfilm
CIN Change Identification Number
CINS Cabin Information Network System
CIT Power Plant and APU Compressor Inlet Temperature
CIU Camera Interface Unit
CK Check
CKD
Checked
CKPT Cockpit
CKT Circuit
CL
Climb
CL
Clutch
CL Center Line
CL
Clip
CL Check List
CL/OP Closure/Opening
CLB Climb
CLCTR Collector
CLD
Closed
CLDB
Component Location Data Bank
CLG
Ceiling
CLG Centerline Landing Gear
CLK Clock
CLM Component Location Manual
CLN
Clinometer
CLNG Ceiling
CLOG Clogging
CLOGD Clogged
CLP
Clamp
CLPR Clapper
CLR Clear
CLR ALT
Clearance Altitude
CLRD Cleared
CLRNC Clearance
CLS Cargo Loading System Manual
CLS Cargo Loading System
CLSD Closed
CLSG Closing
CLTM
Component Location Training Manual
CLV
Clevis
CM Conversion Manual
CM
Call Maintenance
CM
Centimeters
CM
Collective Modification
CM
Configuration Management
CM Conversion Module
CMC Central Maintenance Computer
CMD Command
CMEU Cabin Passenger Management Memory Expansion Unit
CMF Central Maintenance Function
3D Three Dimensional (Lat, Long, Alt)
4D Four Dimensional (Lat, Long, Alt, Time)
A
Ampere
A
Alternate
CMFLR
Cam Follower
CMI
Computer Managed Instruction
CMIT
Component Management and Integration
Team
CML Consumable Material List
CMM Component Maintenance Manual
CMM Calibration Memory Module
CMMM
Component Maintenance Manual
Manufacturer
CMMV Component Maintenance Manual Vendor
C-MOS Complementary Metal Oxyde Semiconductor
CMP
Customer Maintenance Program
CMPLRY
Complementary
CMPLTD Completed
CMPNT
Component
CMPS CPLR
Compass Coupler
CMPTG
Computing
CMPTR Computer
CMRLR
Cam Roller
CMS Code Matière Société
CMS
Cabin Management System
CMS Central Maintenance System
CMS Component Maintenance Sheet
CMT Cabin Management Terminal
CMV Concentrator and Multiplexer for Video
CNA Common Nozzle Assembly
CNCT
Connect
CNCTD
Connected
CNCTN
Connection
CNCTR Connector
CNCTRC
Concentric
CNCV
Concave
CND
Conduit
CNSU Cabin Network Server Unit
CNTNR Container
CNTOR Contactor
CNTR
Counter
CNTRTR Concentrator
CO
Cut-Off
CO
Company
CO RTE Company Route
COAX Coaxial
COC Customer Originated Change
CoC
Centre of Competence
COC Cabin Operation Center
COCT Cabin Operations Consultation Tool
CODD
Contractual On Dock Date
CoE
Center of Excellence
COHO
Coherent Oscillator
COL
Column
COLLI
COntour LED LIght
COM Communication
COM
Common
COM
Company Organization Manual
COM
Command
CombL
Combustible Liquid
COMDL Coding Module
COML Commercial
COMP Compensator
COMP Compass
COMPSN Compensation
COMPT Compartment
COMPT TEMP
Compartment Temperature
COMPTR Comparator
COMTN
Commutation
COND Condition
COND Conditioned
COND Conditioning
CONDTN
Condition
CONDTR Conditioner
CONFIG Configuration
CONFIRMD Confirmed
CONSUMPT Consumption
CONT Continue, Continuous
CONT
Contour
CONT Controller
CONV Converter
COO
Chief Operating Officer
COOL Cooling
COOL Cooler
COOLG Cooling
COOLR Cooler
COORD
Coordinate
COORD Coordination
COPI
Copilot
Cor.M
Corrosive Material
CORA
Customer Order Administration
CORCTD
Corrected
CORR
Correct
CORR
Corrugate
CORR
Corrugation
COS
Cosine
COS Cowl Opening System
COT
Cotter
COTS Commercial Off-The-Shelf
COUNT Counter
COV
Cover
COWL Cowling
CP
Clock Pulse
CPC Cabin Pressure Controller
CPCP
Corrosion Prevention and Control program
CPCS Cabin Pressure Control System
CPCU Cabin Pressure Control Unit
CPD
Continuing Product Development
CPDLC Controller-Pilot DataLink Communications
CPF
Central Programme Function
CPIOM Core Processing Input/Output Module
CPL
Couple
CPLD
Coupled
CPLG Coupling
CPLR Coupler
CPMS Cabin and Passenger Management System
CPMU Cabin Passenger Management Unit
CPNY Company
CPRSR Compressor
CPT
Compartment
CPT
Capture
CPU Central Processing Unit
CQ
Customer Query
CR
Cruise
CR
Cold Rolled
CRC
Camera Ready Copy
CRC Cyclic Redundancy Check
CRC
Crew Rest Compartment
CRC Continuous Repetitive Chime
CRC Centralized Radio Control
CRC
Cyclic Redundancy Code
CRE
Corrosion-Resistant
CRES Corrosion-Resistant Steel
CRG Cargo
CRI Certification Review Item
CRK
Crank
CRL
Collar
CROSS
Center for Reliable Operational System Security
CROSSFEEDR Crossfeeder
CRQ
Customer Request
CRR
Component Reliability Report
CRS Course
CRS
Cold Rolled Steel
CRS
Cost Repercussion Sheet
CRSN
Corrosion
CRT Cathode Ray Tube
CRU Card Reader Unit
CRU Cabin Router Unit
CRZ Cruise
CS
Centistokes
CS
Cabin Cleaners Steps
CS
Call Switch
CS Center Spar
CSAS Cooled Service Air System
CSD Constant Speed Drive
CSDM
Concession Support Decision Manual
CSE
Course Set Error
CSF/L
Continuous Safe Flight/Landing
CSI
Cycles Since Installation
CSIP
Customer Satisfaction Improvement
Programme
CSK Countersink
CSKH
Countersunk Head
CSL Console
CSM
Computer Software Manual
CSM/G Constant Speed Motor/Generator
CSN
Catalog Sequence Number
CSPM
Customer Support Procedure Manual
CSS
Cockpit System Simulator
CST
Cabin Service Trainer
CSTG
Casting
CSTR Constraint
CSU Command Sensor Unit
CSV
Cycles Since Last Shop Visit
CT Current Transformer
CT
Center Tape
CTA
Control Area
CTDP
Cabin Trainer Data Packages
CTF
Central Test Facilities
CTF.P
Central Test Facility Response
CTF.Q
Central Test Facility Questions
CTK
Capacity Tonne Kilometre
CTK Center Tank
CTL Control
CTL Central
CTLR Controller
CTR Center
CTR
Control Zone
CTR
Contour
CTRD
Centered
CTSK
Countersunk
CTU Cabin Telecommunications Unit
CTWT
Counterweight
cu
Cubic
CU Control Unit
CUDU Current Unbalance Detection Unit
CUR Current
CV
Curriculum Vitae
CVE
Compliance Verification Engineer
CVL
Configuration Variation List
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
CWG
Cockpit Working Group
CWLU Cabin Wireless LAN Unit
CWS
Control Wheel Steering
CWS Cabin Work Station
CWSIU Combined Wheel Speed Interface Unit
CWY
Clearway
CY Cycle
CY
Calendar Year - Current Year
CYL Cylinder
D/A
Digital to Analog
D/D
Engine Out Drift Down Point
D/LNA Diplexer/Low Noise Amplifier
D/O
Description and Operation
DA Drift Angle
DABS
Discrete Address Beacon System
DAC Drawing Aperture Card
DAC Digital to Analog Converter
DADC Digital Air Data Computer
DADS
Digital Air Data System
DAF
Damping Augmentation Function
DAGS Dry Air Generation System
DAL
Development Assurance Level
DAMP Damping
DAMPG Damping
daN
Load (DecaNewton)
DAR Digital AIDS Recorder
DAR Digital ACMS Recorder
DAS/STC
Designated Alteration Station/Supplemental Type Certific
DAU Data Acquisition Unit
DB
Decibel
DB
Data Base
dB
Decibel
DB Database
dB(A)
A-Weighted Decibel
DBBS
Data Base Bulletin Service
DBC Data Bus Communication
DBD
Data Basis for Design
DBLR Doubler
DC Direct Current
DC
Domain Coordinator
DC
Direct Cost
DCD
Decode
DCD
Double Channel Duplex
DCD Data Control and Display
DCDR Decoder
DCDU Datalink Control and Display Unit
DCI
Design Change Instruction
DCL Digital Cabin Logbook
DCP Display Control Panel
DCR Dock on Crew Rest
DCR
Delivery Control Room
DCR
Design Change Request
DCRC Dock on Crew Rest Compartment
DCS
Designated Certification Specialist
DCS
Double Channel Simplex
DCS
Direct Current Supply
DCU Direction Control Unit
DCV Directional Control Valve
DCVR
Direct Current Voltage Ratio
DDA
Digital Differential Accumulation
DDCU
Dedicated Display and Control Unit
DDI
Design Drawing Instruction
DDI
Documentary Data Insert
DDM
Difference in Depth of Modulation
DDM Digital Data Module
DDP Declaration of Design and Performance
DDRMI Digital Distance and Radio Magnetic Indicator
DDS
Domain Display Switch
DDTS
Digital Data Technology Standards
DDV Direct Drive Valve
DEC
Declination
DECEL Decelerate
DECOMPRESS Decompression
DECR Decrease
DEDP Data Entry and Display Panel
DEF Definition
DEFDARS
Digital Expandable Flt Data Acquisition &
Recording Sys
DEFL
Deflect
DEFUEL Defueling
DEG Degree
DEGRADD Degraded
DEL
Delay Message
DEL Delete
DEL BY
Deleted by
DELTA P Differential Pressure
DEM
Digital Electronic Module
DEMOD
Demodulator
DEP
Data Entry Panel
DEP Departure
DEPLD
Deployed
DEPRESS Depressurization
DEPT
Department
DES Descent
DES
Digital Equipment Simulator
DES Descend
DEST Destination
DET Detection, Detector
DETECTD Detected
DETNG
Determining
DEU Decoder/Encoder Unit
DEV
Deviation
DEVN
Deviation
DEW
Delivery Empty Weight
DEX
Access Demanded
DF
Direction Finder
DFA
Delayed Flaps Approach
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
DFIDU Dual Function Interactive Display Unit
DFT
Drift
DG
Directional Gyro
DGAC
Direction Generale de l'Aviation Civile
DGI Digital Input
DGO Digital Output
DGTL
Digital
DH Decision Height
DI
Deicing
DI
Data Input
DIA Diameter
DIAPH
Diaphragm
DIBU
Door Illumination Ballast Unit
DIFF Differential
DIM
Dimming
DIM
Dimension
DIM Direction Input Module
DIMM Dimmable
DIP Dual In-line Package
DIPLXR Diplexer
DIR
Direct, Direction, Director
DIR Direction, Direct, Director
DIR TO
Direct to
DISC Disconnect, Disconnected
DISC Disconnection
DISCH Discharge, Discharged
DISCNTY Discontinuity
DISCTN
Disconnection
DIS-IN
Discrete Input
DISRMD
Disarmed
Distance
Distribute, Distribution, Distributor Ditching
DITS DIU Digital Information Transfer System Digital Interface Unit
DIVERTG Diverting
DL
Domain Leader
DL
Data Loader
Direct Lift Control
Data Loading Configuration Manager Data Loading and Configuration
System
DLOAD Data Loading
DLRB Data Loading Routing Box
DLS Data Loading Selector
DLS
Data Load System
DLY
Delay
DMA Direct Memory Access
DMC
Direct Maintenance Cost
DMC Display Management Computer
DMC
Design Modification Committee
DMD
Demand
DMD
Demand Data Sheet
DMDLTR Demodulator
DME Distance Measuring Equipment
DMM Data Memory Module.
DMP DMPR Display Management Processor Damper
DMU Data Management Unit
DIST DISTR
DITCH
DLC DLCM DLCS
DLK Data Link
DMZ DN
DeMilitarized Zone Down
DnCC
Develop new Cabin and Cargo
DNI Drawing Numerical Index
DNLK Downlock
DNLNK Downlink
DO
Data Output
DO
Design Office
DOA
Design Organisation Approval
DOC
Direct Operating Cost
DOC.DATA
Documentary Data
DOLLI Dome LED Light
DOM
Design Organisation Manual
DOM
Document Object Model
DOORLI
Door Light
DOW Dry Operating Weight
DP
Data Processing
DP
Differential Protection
DPCU Digital Passenger Control Unit
DPDT Double Pole/Double Throw
DPI Differential Pressure Indicator
DPM
Design Progress Meeting
DPRM
Delivery Planning Review Meeting
DQN
Design Query Note
DR Dead Reckoning
DR
Dispatch Reliability
DR Door
DRIP
Design Response Intended for Playback
DRL
Documentation Requirement List
DRM Duct Repair Manual
DRMI Distance Radio Magnetic Indicator
DRVG Driving
DRVN
Driven
DRVR Driver
DS
Downstream
DSAPP
Disappearance
DSB Door Sensor Block
DSCRM
Discriminator
DSCRT
Discrete
DSCS
Doors and Escape Slides Control System
DSDL Dedicated Serial Data Link
DSEB Digital Seat Electronic Box
DSENGD
Disengaged
DSG
Design Service Goal
DSI Discrete Input
DSIP Door/Slide Indication Panel
DSMCU Doors and Slides Management Control Unit
DSMS Doors and Slides Management System
DSO Discrete Output
DSPL Display
DSPLYD Displayed
DSSS
Direct Sequence Spread Spectrum
DSTRK
Desired Track
DSUG
Drawing Set User Guide
DTD Document Type Definition
DTG Distance to Go
DTMF Dual Tone Multiple Frequency
DTMS Damage Tolerance Monitoring System
DTMU Damage Tolerance Monitoring Unit
DU Display Unit
DUM
Dummy
DVD Digital Versatile Disk
DVD
Digital Video Disk
DVI Digital Visual Interface
DWG Drawing
DX
Access Demanded
DYNMTC
Dynamometric
E East
E/T
Electrical Trim
EABDC Enhanced Aircraft Broadcast Data Collector
EADI
Electronic Attitude Director Indicator
EADS
European Aeronautic Defence and Space Company
EAROM Electrically Alterable Read Only Memory
EAS
Equivalent Airspeed
EASA
European Aviation Safety Agency
EAT
Expected Approach Time
EBAS Engine Bleed Air System
EBCU Emergency Brake Control Unit
EBHA Electrical Backup Hydraulic Actuator
EBS Engine Build Specification
EBU CFMI, GE, PW
EC
Engine Control
ECAM Electronic Centralized Aircraft Monitoring
ECB Electronic Control Box
ECDB
Equipment Central Data Bank
ECLS Electrical Cargo Loading system
ECM Engine Condition Monitoring
ECM
Engineering Coordination Memo
ECM
Equipment Change Management
ECMS Electrical Contactor Management System
ECMU Electrical Contactor Management Unit
ECN Engineering Change Note
ECON Economy
ECON
Economic
ECP Ecam Control Panel
ECS
Electronic Cooling System
ECS Environmental Control System
ECSB
Embedded Computer System Bus
ECU Electronic Control Unit
ECUCV Electronic Control Unit Cooling Valve
ED
Edge Distance
EDB
ECAM Data Book
EDD
Engineering Delivery Documents
EDES
Equipment Definition Evolution Sheet
EDMC
Engineering Drawing Microfilm Card
EDMS
Engineering Documentation Management Services
EDP
Engine Driven Pump
EDP
Electronic Data Processing
EDS
Electronic Distribution of Software
EDTA
Ethylenediamine Tetraacetate
EE
Electrical and Electronic
EE
Electrical Equipment
EEC Engine Electronic Controller
EEC Electronic Engine Control
EEPROM Electrically Eraseable Programmable Read Only Memory
EFCC Electronic Flight Control Computer
EFCS Electrical Flight Control System
EFCU Electrical Flight Control Unit
EFDARS
Expandable Flight Data Acquisition and Recording Systems
EFF Effective,Effectivity
EFF/FFU Electronic Flight Folder/Flight Follow-Up
EFIS Electronic Flight Instrument System
EFIS CP EFIS Control Panel
EFIS SGU
EFIS Symbol Generator Unit
EFOB Estimated Fuel on Board
EG
For Example
EGIU Electrical Generation Interface Unit
EGMS Electrical Galley Management System
EGPWM Enhanced Ground Proximity Warning Module
EGPWS
Enhanced Ground Proximity Warning System
EHA Electro-Hydrostatic Actuator
EHAC Electro-Hydrostatic Actuator Contactor
EHCU Electromechanical Handforce Control Unit
EHS Electrical Heater System
EHSI
Electronic Horizontal Situation Indicator
EIC
Engineering Integration Centre
EIPM Engine Interface Power Management
EIPMU Engine Interface Power Management Unit
EIRD
Equipment Installation Requirement Dossier
EIS Electronic Instrument System
EIS
Entry Into Service
EIU Engine Interface Unit
EIVMU Engine Interface and Vibration Monitoring Unit
EL
Equipment List
ELA Electrical Load Analysis
ELAC Elevator Aileron Computer
ELAN Ethernet Local Area Network
ELAPS
Elapsed Time
ELC Electronic Library Computer
ELC Emergency Line Contactor
ELEC Electric, Electrical, Electricity
ELEK Electronic
ELEKS
Electronics
ELEV Elevation
ELEV Elevator
ELEVN Elevation
ELEVR Elevator
ELF Engineering support and data Link Function
ELM Electrical Load Management
ELMF Electrical Load Management Function
ELMU Electrical Load Management Unit
ELS Electronic Library System
ELS
Emergency Lighting System
ELT Emergency Locator Transmitter
ELV
Elevation
EM
Engine Manual
EM
ElectroMagnet
EMC Electromagnetic Compatibility
EMDB
Electrical Main Data Bank
EMER Emergency
EMI Electromagnetic Interference
EMISN Emission
EMLS
Emergency Lighting System
EMP
Empennage
EMS
Equipment Modification Sheet
EMU
Engine Maintenance Unit
EMU RR Trent 900
EMWS ElectroMechanical Window Shade
ENBL
Enable
ENCD
Encode
ENCDR Encoder
ENCL
Enclosure
END Endurance
ENG Engine
ENG OUT
Engine Out
ENGD
Engaged
ENGR
Engineer
ENM Electrical Network Management
ENMF Electrical Network Management Function
ENMS Electrical Network Management System
ENP
Estimated Normal Payload
ENRGZ
Energize
ENT
Entry
ENTR
Entrance
ENV
Envelope
ENVMOD Envelope Modulation
EO Engine Out
EO
Engineering Order
EO ACCEL ALT
Engine Out Acceleration Altitude
EOC
Engineering Order Change
EOP
End of Part
EOSID Engine Out Standard Instrument Departure
EOT End of Tape
EP Entry Panel
EPAC
Entity per Aircraft Change
EPC External Power Contactor
EPD Extended Principle Diagram
EPESC Enhanced Passenger Entertainment System Controller
EPGS Electrical Power Generation System
EPLD Electronically Programmable Logic Device
EPM
Engineering Program Manager
EPPT
Electronic Performance
EPR
Exhaust Pressure Ratio
EPR Engine Pressure Ratio
EPR
Equipment Problem Report
EPR.D EPR Descent
EPR.L EPR Latch
EPROM Erasable Programmable Read Only Memory
EPSU Emergency Power Supply Unit
EPU
Emergency Power Unit
EQIR
Engineering Query Investigation report
EQPT Equipment
ER
Error Report
ER
Elevator Rib
ER Extended Range
ER
Engine Run
ERECT
Erection
ERL
Economic Repair Life
ERMM En Route Moving Map
EROM
Electronic Readout Machine
ERP Enhanced Runaway Protection
ERR
Error
ERS
Erase
ERS
Erased
ERS
Embodiment Repercussion Sheet
ERU Engine Relay Unit
ESB
Evaluation Service Bulletin
ESB Electrical System BITE
ESBF Electrical System BITE Function
ESC Escape
ESD
Electro Sensitive Device
ESD
Electronic System Display
ESD ElectroStatic Discharge
ESDB
Element Standard Data Bank
ESDN Extended System/Structure Description Note
ESG
Evaluated Service Goal
ESLB ECAM System Logic Book
ESLD
ECAM System Logic Data
ESP Electrical Standard Practices
ESPM Electrical Standard Practices Manual
ESS Essential
EST Estimated
ESU Ethernet Switch Unit
ESWL
Equivalent Single Wheel Load
ET Elapsed Time
ETA Estimated Time of Arrival
ETACS External and Taxiing Aid Camera System
ETD Estimated Time of Departure
ETDS
Engineering Technical Data Service
ETE Estimated Time En Route
Etio.Ag.
Etiologic Agent
ETL
Engineering Team Leader
ETO Estimated Time Over
ETOPS Extended Range Twin Engined Aircraft Operations
ETP Equal Time Point
ETR
Engineering Template Repository
ETRAC Electronic Thrust Reverser Actuation Controller
ETRAS Electrical Thrust Reverser Actuation System
ETS
Equipment Technical Specification
ETT Estimated Time for Takeoff
EUPB Electronic Unit Protection Box
EV
Electro Valve
EVAC Evacuation
EVAC Evacuate
EVMU Engine Vibration Monitoring Unit
EWD Engine/Warning Display
EWS
Electronic Warning System
EWS Electrical Window Shades
EX Example
EXC Excitation, Excite
EXCD
Excited
EXCESS Excessive
EXCG
Exciting
EXCHG Exchange
EXCHGR Exchanger
EXCN
Excitation
EXH Exhaust
EXP Expansion
Expl.
Explosive
EXSTG Existing
EXT
Extend, Extension
EXT Exterior, External
EXTC
Extract
EXTCD
Extracted
EXTCG
Extracting
EXTG
Extending
EXTIG
Extinguishing
EXTIN
Extinction
EXTING Extinguishing
EXTING Extinguish
EXTIR
Extinguisher
EXTN Extension
EXTR
Extractor
EXTR
Extrusion
EXTRACT Extraction, Extractor
EZ
Electrical Zero
F Fuel
F Fahrenheit
F
Minimum Flap Retract Speed (EFIS)
F/C First Class
F/CTL Flight Controls
F/E
Flight Engineer
F/O First Officer
F/S
Fast/Slow
F/U
Follow-Up
F/W
Failure Warning
FA Course from a Fixed Waypoint to an Altitude Termination
FAA
Federal Aviation Administration
FAC Flight Augmentation Computer
FACS
Flight Augmentation Computer System
FADEC Full Authority Digital Engine Control
FAF Final Approach Fix
FAI
First Article Inspection
FAIL Failed, Failure
FAIR
Fairing
FAL
Final Assembly Line
FALH
Final Assembly Line Holder
FANS Future Air Navigation System
FAOM
Flight Attendant Operating Manual
FAP Forward Attendant Panel
FAP Flight Attendant Panel
FAR Federal Aviation Regulations
FAS Flight Augmentation System
FAS
Fatigue Approval Sheet
FAV Fan Air Valve
FAWP
Final Approach Waypoint
FBB Fasten Bed Belt
FBS
Fixed Base Simulator
FBW
Fly-by-wire
FC
Freight Container Train
FC
Flight Cycle
FC Fully Closed
FC Course from a Fixed Waypoint to a Changeover Point
FCC Flight Control Computer
FCCS
Flight Control Computer System
FCCU
Flight Control Computer Unit
FCD
Full Color Display
FCD55
Full Color Display 5 inch x 5 inch
FCDC Flight Control Data Concentrator
FCGU Flight Control and Guidance Unit
FCMC Fuel Control and Monitoring Computer
FCMS Fuel Control Monitoring System
FCO
Fulfill Customer Order
FCOM Flight Crew Operating Manual
FCP
Full Change Process
FCPC Flight Control Primary Computer
FCPI
Flight Control Position Indicator
FCR
Flight Crew Report
FCRC Flight Crew Rest Compartment
FCSC Flight Control Secondary Computer
FCST
Forecast
FCTN
Function
FCU
Flush Control Unit
FCU Flight Control Unit
FCU Fuel Control Unit
FCV Flow Control Valve
FD Flight Director
FD Fuselage Datum
FD Course from a Fixed Waypoint to a DME Distance
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
FDD Floppy Disk Drive
FDD
Functional Description Document
FDE Flight Deck Effect
FDEP Flight Data Entry Panel
FDIAF Flight Data Interface/Acquisition Function
FDIMU Flight Data Interface and Management Unit
FDIU Flight Data Interface Unit
FDR Flight Data Recorder
FDRPL
Flight Data Recording Parameter Library
FDRS Flight Data Recording System
FDS
Fault Detection Specification
FDSU
Flight Data Storage Unit
FDU Fire Detection Unit
FE Flight Envelope
FEC
Flight Envelope Computer
FEDR Feeder
FEGV Fan Exit Guide Vane
FES Fire Extinguishing System
FET
Field Effect Transistor
FEW
Fleet Empty Weight
FF Fuel Flow
FF
Ferry Flight
FFAR
First Flight Article Review
FFCC
Forward Facing Crew Cockpit Configuration
FFCC
Forward Facing Crew Cockpit Concept
FFCCV Forward Flange Compressor Casing Vibration
FFCCV Fan Frame Compressor Case Vertical
FFCM Free Fall Control Module
FFL
Flip Flop Latch
FFP
Fixed Firm Price
FFS
Full Flight Simulator
FFS
Full Feasibility Study
FG Flight Guidance
F-G/S FLS Glide Slope
FGE Flight Guidance and Envelope
FGES Flight Guidance and Envelope System
FGN
Foreign
FGS
Flight Guidance System
FH Flight Hours
FHA
Functional Hazard Analysis
FHSS
Frequency Hopping Spread Spectrum
FIDS Fault Isolation and Detection System
FIFO First Input/First Output
FIG Figure
FIL
Filament
FIL
Fillet
FIL H
Fillister Head
FILG Filling
FIM Fault Isolation Manual
FIN Functional Item Number
FIR
Full Indicator Reading
FIS Flight Information Services
FIX Fixed
FL
Flood
FL
Flow
FL Flight Level
FL
Fluid
FL
Floor
Fla.G
Flammable Compressed Gas
Fla.L
Flammable Liquid
Fla.S
Flammable Solid
FLC
Feel and Limitation Computer
FLD Field
FLDK
Flight Deck
FLEX Flexible
FLG
Flange
FLH
Flat Head
FLIP
Flight Plan Computation Program
FLLT
Flashing Light
FLMPRF
Flameproof
F-LOC FLS Localizer
FLP Flap
FLP
Flight Line Planning
FLS FMS Landing System
FLS
Field Loadable Software
FLSA
Fuel Level Sensing Amplifier
FLSCU Fuel Level Sensing Control Unit
FLT Flight
FLT CTL
Flight Control
FLTR Filter
FLXTO Flexible Take-Off
FM Flight Management
FM Flight Manual
FM Frequency Modulation
FM
Fan Marker
FM Course from a Fixed Waypoint with a Manual Termination
FMA Flight Mode Annunciator
FMC Flight Management Computer
FMCS Flight Management Computer System (FMC and CDU)
FMCU
Flight Management Computer Unit
FMD
Failure Message Description
FMEA Failure Mode Effect Analysis
FMES
Failure Mode and Effects Summary
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
FMS Flight Management System (FMCS and AFS sensors)
FMS
Fuel Manifold Staging
FMU Fuel Metering Unit
FMV Fuel Metering Valve
FNA
Final Approach
FNCP Flight Navigation Control Panel
FNSG Flight Navigation Symbol Generator
FO Fully Open
FO
Flight Order
FOB Fuel On Board
FOC Fuel/Oil Cooler
FOCT Flight Operations Consultation Tool
FOD
Fuel Over Destination
FOD Foreign Object Damage
FOD
Flight Operation Domain
FOM
Flight Operations Manual
FOM
Flight Operations Monitoring
FOQA
Flight Operations Quality Assurance
FOR DET
For Detail
FOS Fuel Operator Station
FOT
FAL Operational Test Meeting
FOVE Flight Operations Versatile Environment
FPA Flight Path Angle
FPEEPMS Floor Proximity Emergency Escape Path Marking System
FPH Floor Panel Heating
FPL
Flight Plan
F-PLN Flight Plan
FPM
Feet per Minute
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
FQI
Fuel Quantity Indicating/-ion/-or
FQIC Fuel Quantity Indication Computer
FQMS Fuel Quantity and Management System
FR Frame
FRD
Functional Requirement Document
FREQ Frequency
FREX
Support Repercussion Sheet
FRM Fault Reporting Manual
FRQ
Frequency
FRS Flammability Reduction System
FRT
Front
FRU Frequency Reference Unit
FRV Fuel Return Valve
FS Front Spar
FS
Fuselage Station
FSA FlySmart with Airbus
FSB Fasten Seat Belts
FSCM Federal Supply Code for Manufacturers
FSN Fleet Serial Number
FST
Fire/Smoke/Toxicity
FSTNR
Fastener
ft
Feet, Foot
ft/mn
Feet per Minute
FTA
Flight Test Analysis
FTB
For the time being
FTD
Flight Training Device
FTE
Flight Test Engineer
FTG Fitting
FTI Flight Test Installation
FTIS Fuel Tank Inerting System
FTK
Freight Tonne Kilometre
FTK
Fuel Tank
FTMS
Flight Test Management System
FTP
File Transfer Protocol
FTR
Flight Test Request
FTRNG
Feathering
FTS
Frame Time Select
FTSP Floor Temperature Setting Panel
FTU Force Transducer Unit
FU
Feedback Unit
FU Fuel Used
FUSLG Fuselage
FV
Flux Valve
FW Failure Warning
FW
Firewall
FWC Flight Warning Computer
FWD Forward
FWL Firewall
FWS Flight Warning System
FWSD
Flight Warning and System Display
FY
Fiscal Year
G
Galley
G
Grid
g
Earth Acceleration (Symbol)
G Green
G
Gyro
g
Gram
G/A
Ground-to-Air
G/G
Ground Guidance
G/S Glide Slope
GA Go-Around
GA
General Application
GAD General Assembly Drawing
GAHMM
Global Aircraft Health Monitoring and Management
GAIR General Assembly Inspection Report
gal
Gallon
GALV
Galvanize
GALY Galley
GAMMA-A
Slope
GAMMA-T
Potential Slope
GAPCU Ground and Auxiliary Power Control Unit
GATE
Glossary of Airbus Terms and Expressions
GATT
General Agreement on Tariffs and Trade
GCA
Ground-Controlled Approach System
GCP
General Conditions of Purchase
GCR Generator Control Relay
GCU Generator Control Unit
GDE Guide
GDNC Guidance
GDO Ground Door Opening
GDS GSE Data Sheet
GE General Electric
GEM Ground Equipment Manual
GEN Generator
GENL
General
GES Ground Earth Station
GFI Ground Fault Interruption
GFTM
General Familiarization Training Manual
GGPCU Generator and Ground Power Control Unit
GIC
General Instruction Card
GIDOCA
Gestion Informatique de la Documentation Avion
GIE
Groupement d'Intérêt Economique
GIM
General Introduction Manual
GIPSY
General Integrated Publication System
GLASU Galley Light Attendant Service Unit
GLC Generator Line Contactor
GLM
General List of Modifications
GLR Generator Line Relay
GLS GNSS Landing System
GLT Ground Leak Test
GMC
General Modification Committee
GMR
Ground Movement Radar
GMT Greenwich Mean Time
GMTBF
Guaranteed Mean Time Between Failure
GNC Galley Network Controller
GND Ground
GNLU GNSS Navigation and Landing Unit
GNSS Global Navigation Satellite System
GP
Glide Path
GPCU Ground Power Control Unit
GPM General Processing Module
GPS Global Positioning System
GPSSU Global Positioning System Sensor Unit
GPU Ground Power Unit
GPWC Ground Proximity Warning Computer
GPWS Ground Proximity Warning System
GR
Gear
GR
Goods Received
GRC
Glass Reinforced Composite
GRFC
Global RFC
GRP Geographic Reference Point
GRP
Ground/Geographical Reference Point
GRP Glass-Reinforced Plastic
GRP
Ground Reference Point
GRU Ground Refrigeration Unit
GRV
Groove
GRVTY Gravity
GS Ground Speed
GSB Ground Service Bus
GSE Ground Support Equipment
GSHLD Glareshield
GSM
General Structure Manual
GSM Global System for Mobile Communication
GSP Ground Service Panel
GTA
General Terms Agreement
GTHRG
Gathering
GTI Ground Test Instructions
GTR
Ground Test Requirements
GUI
Graphic Interface Unit
GW Gross Weight
GWDU Galley Waste Disposal Unit
GWR General Working Rules
GY
Grey
GYRO Gyroscope
H
Hot (Electrical Point)
H
Runway Thickness
h
Hour
h
Height
H NAV
Horizontal Navigation
H/W Hardware
HA Holding Pattern to an Altitude Termination
HADC
Hybrid Air Data Computer
HARN Harness
HAS
Heading and Attitude System
HB
Brinnell Hardness Test Value
hbar
Stress (Hectobar)
HCS Humidification Control System
HCU Hydraulic Control Unit
HCU Head Up Combiner Unit
HD
Head
HD
Hold
HDDA Hard Disk Drive Array
HDG Heading
HDG/S Heading Selected
HDL Handle
HDLG Handling
HDM HSDU Data Module
HDST Headset
HDWHL Handwheel
HEATG Heating
HEGS Hydraulic Electrical Generating System
HES Head-End Switch
HESU Head-End Server Unit
HEX
Hexadecimal
HF Holding Pattern to a Fixed Waypoint
HF High Frequency
HFDR High Frequency Data Radio
HFEC High Frequency Eddy Current
HGA High Gain Antenna
HHL
Horizontal Hinge Line
HI High
HIBU
Hybrid Illumination Ballast Unit
HID High Intensity Discharge
HIDS Host Intrusion Detection System
HIL
Hold Item List
HK
Knoop Hardness Test Value
HL High Level
HLAC
High Level AC Voltage
HLCL
Helical
HLD Hold
HLD High Power Amplifier/Low Noise Amplifier/Diplexer
HLDC
High Level DC Voltage
HLDR Holder
HLTY Healthy
HM Holding Pattern with a Manual Termination
HMC Hydromechanical Control
HMI Human-Machine Interface
HMU Hydromechanical Unit
HMU Hydromechanical Metering Unit
HNG
Hinge
HO
HandOver
HoE
Head of Engineering
HOLD
Holding
HOR Hold Open Rod
HORIZ
Horizontal
HOT High Oil Temperature
HP High Pressure
Hpa
Hecto Pascal
HPA High Power Amplifier
HPC
Rear Compressor Rotor and Stator
Assembly
HPC High Pressure Compressor
HPR High Power Relay
HPT High Pressure Turbine
HPT
Rear Compressor Drive Turbine Rotor
Assembly
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
High Pressure Valve
HPV HP Bleed Valve
HR
Hour
HR
Hot Rolled
HR(X)
Rockwell Hardness Test Value
HR/XXX)
Rockwell Superficial Hardness Test Value
HRP Horizontal Reference Plane
HRS
Hours
HRS
Hot Rolled Steel
HS High Speed
HSDU High Speed Data Unit
HSG
Housing
HSI Horizontal Situation Indicator
HSI
Hot Section Inspection
HSMU Hydraulic System Monitoring Unit
HSS
High Speed Steel
HT
Heat
HT TR
Heat Treat
HTD
Heated
HTG Heating
HTML
Hyper Text Mark-up Language
HTP
Horizontal Tail Plane
HTR Heater
HTTP
HyperText Transfer Protocol
HUD Head Up Display
HUDC Head Up Display Computer
HUMIDIF Humidification
HV
Vickers Hardness Test Value
HV High Voltage
HVDF
High and Very High Frequency Direction -
Finding Station
HVPS High Voltage Power Supply
HWBPT
Hardware Breakpoint
HYD Hydraulic
HZ
Hertz
I
Invoice Card
I
Inertial
I/I
Inspection/Interval
I/O Input/Output
I/P Intercept Profile
I/P Intercept Point
I/P Input
IAE International Aero Engines
IAF Initial Approach Fix
IAS Indicated Airspeed
IATA
International Air Transport Association
IATP
International Air Transport Pool
IAW
In Accordance with
IAWP
Initial Approach Waypoint
IBIT Initiated BITE
IBLC Inter-Bus Line Contactor
IBN
Identification Beacon
IBU
Integrated Ballast Unit
IC
Integrated Circuit
IC
Invoice Control Card
ICAO
International Civil Aviation Organisation
ICARE
Illustration, Constraint, Activity, Rule, Entity
ICC
Integrated Change Control
ICCAIA
Inter Co-ordinating Council of Aerospace Industries Asso
ICD Interface Control Document
ICE
In Circuit Emulation
ICP Integrated Control Panel
ICU Isolation Control Unit
ICY Interchangeability
ID Inside Diameter
ID PL
Identification Plate
IDBT
Integrated Design and Build Team
IDC
Instrument Display Catalog
IDENT Identification, Identifier, Identify
IDG Integrated Drive Generator
IDP
Integrated Data Processing
IDU Interactive Display Unit
IEC
International Electrotechnical Commission
IEEE
Institute of Electrical and Electronic Engineers
IES
Industrial Evaluation Sheet
IETF
Internet Engineering Task Force
IF
Intermediate Frequency
IF Initial Fix
IFA
International Federation of Airworthiness
IFA
Integrated Final Assembly
IFE In-Flight Entertainment
IFEC In-Flight Entertainment Center
IFES
In-Flight Entertainment System
IFP
In-Flight Performance Computation Program
IFPA InFlight Performance Application
IFR Instrument Flight Rules
IFSD
In-Flight Shut Down
IFTB
In flight Turn back
IGB Inlet Gear Box
IGGS Inert Gas Generation System
IGN Ignition
IIPD
Illustrated Initial Provisioning Document
ILLUM Illumination
ILLUMD
Illuminated
ILS Instrument Landing System (LOC and G/S)
IM Inner Marker
IMA Integrated Modular Avionics
IMC
Indirect Maintenance Cost
IMM Immediate
IMPACT
Improvement Manufacturer Program for Airbus Customer Training
IMR Interlock Monitoring Relay
IMU Inertial Measurement Unit
in
Inch
IN
Inch
IN HG
Inches of Mercury
INA
Initial Approach
INB Inbound
INBD Inboard
INCLG
Including
INCR
Increase
INCR Increment
IND Indicator
INDG Indicating
INFO Information
INHI
Inhibit
INHIB Inhibit, Inhibited, Inhibition
INIT Initial(ization)
IN-LBS
Inch-pounds
INOP Inoperative
INP
Input
INR Inner
INRTL Inertial
INS Inertial Navigation System
INSP
Inspection
INST Instrument
INST Instinctive
INSTL Installation
INSTLLD
Installed
INSTM
Instrumentation
INSUL Insulate, Insulation, Insulator
INT
Interrupt
INT
Intersection
INT Interior For lights
INTCON
Interconnection
INTCP Intercept
INTEG Integral
INTEN
Intensity
INTERCOM Intercommunication
INTFC Interface
INTG
Integral
INTGT
Integrate, Integrating
INTL Internal
INTLK Interlock
INTMD Intermediate
INTMT Intermittent
INTPH Interphone
INTR
Interior
INTRG Interrogate, Interrogator
INTRPT Interrupt
INU
Inertial Navigation Unit
INV Inverter
INWP
Intermediate Waypoint
IOC
Indirect Operating Cost
IOE
Initial Operating Experience
IOM Input/Output Module
IOR
Immediate Operational Requirement
IP Intermediate Pressure
IP
Initial Provisioning
IP
Invoice Packing Card
IP
Internet Protocol
IPC
Intermediate Pressure Bleed Check Valve
IPC Illustrated Parts Catalog
IPCT
Initial Provisioning Coordination Team
IPCU Ice Protection Control Unit
IPD
Initial Provisioning Data
IPD
Illustrated Provisioning Document
IPDU Ice Protection Data Unit
IPL
Illustrated Parts List
IPO
Initial Public stock Offering
IPPU Instrumentation Position Pick-off Unit
IPRAM Integrated Prerecorded Announcement Module
IPS
Incorrect Phase Sequence
IPT
Inadvertent Power Transfer
IPV
Indicator Para Visual
IR Inertial Reference
IRAN
Inspection and Repair As Necessary
IRDC Interface Remote Data Concentrator
IRP Integrated Refuel Panel
IRQ
Interrupt Request
IRR
Internal Rate of Return
Irr.M
Irritating Material
IRS Inertial Reference System
IRS
Inspection Report System
IRU
Inertial Reference Unit
ISA
Inertial Sensor Assembly
ISA International Standard Atmosphere
ISAMI
Improvement of Structure Analysis through
Multi-disciplinary Integration
ISB
Inter-System Bus
ISDN
Integrated Services Data Network
ISDU
Inertial Sensor Display Unit (IRS)
ISG
Instrument Symbol Generator Unit
ISIS Integrated Standby Instrument System
ISM Illumination Sensor Module
ISO International Standardization Organisation
ISOL Isolation
ISP
In-Service Problem
ISP Integrated Static Probe
ISPSS In-Seat Power Supply System
ISPSU
In-Seat Power Supply Unit
ISPU
In-Seat Power Supply Unit
ISRO
In-Service Reportable Occurrence
ISS
Inertial Sensor System
ISU
Inertial Sensor Unit
ISWL
Isolated Single Wheel Load
IT
Interruption
ITP
Intention To Proceed
ITS
Internal Technical Specification
IV Isolation Valve
IVASEB Integrated Video and Audio Seat Electronic Box
IVCP
Integrated Value Creation Project
IVS Inertial Vertical Speed
JAA
Joint Aviation Authorities
JAM Jammed, Jamming
JAMG
Jamming
JAR Joint Aviation Requirements
JB
Junction Box
JCT
Junction
JEMTOSS
Jet Engine Maintenance Task Oriented
Support System
JEP Jeppesen
JFGW Jettison Final Gross Weight
JIC
Job Instruction Card
JID Jeppesen Inflight Database
JITX Jeppesen Integrated Tool Kit X
JK
Jack
JOEB
Joint Operation Evaluation Board
JOG
Joggle
JTSN Jettison
JUNCTN Junction
K
Subgrade Reaction Modulus
K
Degrees Kelvin
KA
Knowledge Acquisition
KB/s
Kilo Bits per Second
KBD KCCU Keyboard
KE
Keyboard and Cursor Control Unit Knowledge Engineering
KeV
Thousand Electron Volts
KFS Kaspersky File System
kg
Kilogram
kg/m³
Kilograms/Cubic Meter
KHZ
Kilohertz
KIAS
Knots Indicated Airspeed
KM
Knowledge Management
kPa
Kilo Pascal
KPI
Key Performance Indicator
KRUG
Krueger
KT
Knot(s)
KU Keyboard Unit
KV
Kilo Volt
KVA
Kilovolt Ampere
kW
Kilowatt
L Length
L
Litre or Liter
L
Radius of Relative Stiffness
L Left
L ECAM DU
Left ECAM Display Unit
L/D
Lift/Drag
L/G Landing Gear
L/HIRF
Lightning/High Intensity Radiated Fields
LA
Linear Accelerometer
LAF
Load Alleviation Function
LAG
Lagging
LAILA LAvatory Interface and Light Adapter
LAM
Laminate
LAMM
Lights, Audio and Miscellaneous Module
LAN Local Area Network
LAND
Landing
LAP
List of Applicable Publications
LAT LAT Lateral Latitude
LAU
Linear Accelerometer Unit
LAV Lavatory
lb
Pound
LB
Pounds
LBA
Luftfahrt Bundes Amt
LBA Logical Bus Application
lbf/in²
Pounds force per square inch
LB-FT
Pound - Force - Foot (Torque)
LB-IN
Pound - Inch
LBP Left Bottom Plug
LC
Labour Cost
LC Line Contactor
LCC
Life Cycle Cost
LCD Liquid Crystal Display
LCDT Load Compressor Discharge Temperature
LCH Latch Latching
LCIT Load Compressor Inlet Temperature
LCL
Line Check List (Maintenance)
LCN LCP Load Classification Number Local Control Panel
LCSD
Line Check Support Data
LCTR Locator
LD
Left Display
LD Lower Deck
LD
Load
LD CAB Lower Deck Cabin
LD GALY Lower Deck Galley
LD LAV Lower Deck Lavatory
LDA
Localizer-type Directional Aid
LDC
Local Domain Coordinator
LDC Local Door Controller
LDCC Lower Deck Cargo Compartment
LDF
Lower Deck Facilities
LDG
Landing
LDG GR
Landing Gear
LDI
Landing Direction Indicator
LDMCR LDPA Lower Deck Mobile Crew Rest LanDing Performance Application
LE
Log Entry
LE Leading Edge
LED Light Emitting Diode
LEHGS Local Electro-Hydraulic Gene+B2201:B2238ration System
LEL
Lower Explosive Limit
LEO Little Earth Orbit
LEP
List of Effective Pages
LER Leading Edge Rib
LF
Low Frequency
LFR
Low Frequency Radio Range
LGA Low Gain Antenna
LGCIS Landing Gear Control Indication System
LGCIU Landing Gear Control and Interface Unit
LGCM Light Green Communication Manager
LGERS Landing Gear Extension and Retraction System
LGMS Landing Gear Management System
LGND
Legend
LGWSS Landing Gear Well Surveillance System
LH Left Hand
LIB Loudspeaker and Indicator Box
LIM Limit, Limitation, Limiting, Limiter
LIMG
Limiting
LIPPLE
Lowest Intelligible Phone Power Level
LIQD Liquid
LIS Localizer Inertial Smoothing
LISA
Light Interface Standardization Adapter
LKD Locked
LKG Locking
LKR
Locker
LKSHFT Lockshaft
LL
Low Level
LL Latitude/longitude
LL1
Waypoint from Waypoint List Abbreviated
LLAC
Low Level AC Voltage
LLDC
Low Level Direct Current
LLDC
Low Level DC Voltage
LLI
Long Lead Time Item
LLL
Low Level Light
LLS
Left Line Select Key
LLS
Low-Level Solid Radioactive Material
LLS
Liquid Level Sensor
LMC
Least Material Condition
LMC
Last Minute Change
LMES Loss of Main Electrical Supply
LMM
Compass Locator at Middle Marker
LMP Left Middle Plug
LMP
Line Maintenance Part
LMS Leakage Measurement System
LMT
Local Mean Time
LNA
Label Not Available
LNG Long
LNR Linear
LO Low
LO
Local Oscillator
LO PR
Low Pressure
LOC Localizer
LOC
List of Overhaulable Components
LOCKG Locking
LODD
Last acceptable On Dock Date
LOG
Logic
LOGO
Logogram
LOM
Compass Locator at Outer Marker
LONG
Longitudinal
LONG Longitude
LONGL Longitudinal
LONGN Longeron
LOP Low Oil Pressure
LOPA
Layout Per Aircraft
LORAN
Long Range Aid to Air Navigation
LOS
Lavatory Occupied Sign
LP Low Pressure
LP VALVE
Low Pressure Valve
LPC Low Pressure Compressor
LPC
Low Compressor Rotor and Stator Assembly
LPC
Less Paper in the Cockpit
LPE
Laissez-Passer Exceptionnel
LPFEV
Long Power Failure Event
LPO
Landings per Overhaul
LPT Low Pressure Turbine
A
Alternate
LPT
Front Compressor Drive Turbine Rotor
Assembly
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
LR
Long Range
LRE List of Radioactive and Hazardous Elements
LRI Line Replaceable Item
LRM Line Replaceable Module
LROPS Long Range Operations
LRRA
Low Range Radio Altimeter
LRU Line Replaceable Unit
LS
Line Select Key
LS Loudspeaker
LS Low Speed
LS Landing System
LSA
Low Speed Aileron
LSA
Low Specific Activity Radioactive Material
LSAP
Loadable Software Aircraft Parts
LSB Least Significant Bit
LSC
Least Significant Character
LSC Load Signature Certificate
LSI Large Scale Integrated/Integration/Integrator
LSP
Low Speed
LSP
Loadable Software Part
LSR Load Shedding Relay
LSR
Last Significant Bit
LSU
Lavatory Service Unit
LT Light
LT
Teleloading
LTD Limited
LTD PLT Lighted Plate
LTG Lighting
LTK
Load Tonne Kilometre
LTM Livestock Transportation Manual
LTO
Landing and TakeOff
LTP Left Top Plug
LTR
Lab Test Request
LTS
Lights
LTS
Load and Trim Sheet Software
LUAR
Laboratory Unit Acceptance Review
LV Low Voltage
LVDT Linear Variable Differential Transducer
LVL Level
LVL/CH
Level Change
LVR
Louver
LVR Lever
LVT Linear Voltage Transducer
LW Landing Weight
LWR Lower
LWSA Lavatory Water Supply Assy
L-x
Lavatory - X
M Maneuvering Speed (EFIS)
M
Magenta
m
Meter
M
Mode
M
Mach Number
M
Mach
M/L Mood Lighting
m³
Cubic Meter
MA
Milli-Ampere
MA
Maintenance Annunciator
MAA
Maximum Authorized IFR Altitude
MAAP
Members and Associated Partners
MABH
Minimum Approach Breakoff Height
MAC Mean Aerodynamic Chord
MAC
Maintenance Action Classification
MACT Module Application Configuration Table
MADAR
Malfunction Detection Analysis and Recording Subsystem
MAF Maintenance Access Function
MAG Magnetic
MAG
Magazine
MAG DEC Magnetic Declination
MAG VAR
Magnetic Variation
Mag.M
Magnetized Material
MAGN
Magnetron
MAIDS
Multipurpose Automatic Inspection and Diagnostic System
MAIN MUX Main Multiplexer
MAINT Maintenance
MALS
Medium Intensity Approach Light System
MALSR
Medium Intensity Approach Light System with Runway Align
MAN Manual
MAP
Missed Approach Segment
MAP
Ground Mapping
MAP
Master Annunciator Panel
MAP
Mise au point
MAPSP
Master Attendant Passenger Service Panel
MAS
Milli-Ampere/Seconds
MAS
Modification Approval Sheet
MASI
Mach Airspeed Indicator
MAT Multi-purpose Access Terminal
MAT
Maintenance Access Terminal
MAWP
Missed Approach Waypoint
MAX Maximum
MAX CLB
Maximum Climb
MAX DES
Maximum Descent
MAX END
Maximum Endurance
MB
Millibars
mbar
Millibar
MC
Master Change
MC
Material Cost
MCA
Minimum Crossing Altitude
MCBF
Mean Cycles between Failures
MCC
Modification Customer Chart
MCC
Multi Crew Cooperation
MCD Movable Class Divider
MCDU Multipurpose Control & Display Unit
MCE Motor Control Electronic
MCi
Millicurie
MCL Maximum Climb
MCPU Motor Control and Protection Unit
MCR
Maximum Cruise
MCR
Manufacturer Change Request
MCS
MultiChannel Aviation Satellite
Communication System
MCS Mission Computer Subsystem
MCT Maximum Continuous Thrust
MCU Master Control Unit
MCU Modular Concept Unit
MCUR Mean Cycle Between Unscheduled Removals
MCVL
Manual Configuration Variation List
MCW
Modulated Continuous Wave
MD Main Deck
MDA
Minimum Decision Altitude
MDA Minimum Descent Altitude
MDAU
Modular Data Acquisition Unit
MDCC Main Deck Cargo Compartment
MDCD Main Deck Cargo Door
MDDU Multipurpose Disk Drive Unit
MDF
Medium Frequency Direction Finding Station
MDH
Minimum Descent Height
MDL Module
MDM
Material Data Meeting
MDR Multiregional DBS (Digital Broadcast System) Receiver
MDU
Multiplier Divider Unit
MDU Manual Drive Unit
MEA
Minimum En Route IFR Altitude
MEAS Measurement
MEASRG
Measuring
MEC Main Engine Control
MECH Mechanic, Mechanical, Mechanism
MED Medium
MEDB
Model/Engine DataBase
MEL
Minimum Equipment List
MEM
Memory
MEO Middle Earth Orbit
MEP Main Executive Program
MES Main Engine Start
MET Meteorological
MEV
Main Electro Valve
MEV
Million Electron-Volts
MEW Manufacturer's Empty Weight
MF
Medium Frequencies
MFA MFD MFG Memorized Fault Annunciator MultiFunction Display Manufacturing
MFP
Mixed Fission Products
MFP MFP MFR Maintenance Facility Planning MultiFunction Probe Manufacturer
MFR IDENT
Manufacturer Identification
MFS MultiFunction Sensor
MFT
Multi Function Team
MFTW
Maximum Design Fuel Transfer Weight
MFW
Maximum Design Flight Weight
MGB Main Gear Box
MGMT Management
MGT
Management
MHSU
Magnetic Heading Sensor Unit
MHZ
Megahertz
MI MIB MIC Magnetic Indicator Management Information Base Microphone
MICBAC MID Micro-System Bus Access Channel Middle
MID
Modification Information Document
MIDU Multi-Input Interactive Display Unit
MILA
MIni Light Adapter
mile/h
Miles per Hour
MIN Minimum
min
Minute
MIN FUEL
Minimum Fuel
MIN TIME
Minimum Time
MIP
Maintenance Information Printer
MIP Master Interphone Panel
MIPO
Manually Issued Purchase Order
MIPS
Maintenance Information and Planning System
MISC Miscellaneous
MKGS
Markings
MKR Marker (radio) Beacon
ml
Milliliter
MLA Maneuver Load Alleviation
MLC Mood Lighting Controller
MLD
Molded
MLFAP Mood Lighting Flight Attendant Panel
MLG Main Landing Gear
MLI Magnetic Level Indicator
MLIH Magnetic Level Indicator Housing
MLS Microwave Landing System
MLW Maximum Design Landing Weight
MM Middle Marker
mm
Millimeter
MM
Maintenance Manual
mm²
Square Millimeter
mm³
Cubic Millimeter
MMC
Maximum Material Condition
MMDB
Mechanical Main Data Bank
MMEL Master Minimum Equipment List
MMH/FH
Maintenance Man Hours per Flight Hour
MMI Manual Magnetic Indicator
MMO Mach Max Operating Speed
MMO Maximum Operating Mach
MMR Multi-Mode Receiver
Mn
Mach Number
MNFOLD Manifold
MNPS
Minimum Navigation Performance Specification
MOCA
Minimum Obstruction Clearance Altitude
MOD
Modulator
MOD Modification
MOD/V
Modulating Valve
MODLTR Modulator
MOKA
Methodology and software tools Oriented to KBE Applications
MOM
Maintenance Organization Manual
MON Monitor, Monitoring, Monitored
MONG
Monitoring
MORA Minimum Off Route Altitude
MORV Mixer Overpressure Relief Valve
MOS Metal Oxyde Semiconductor
MOT Motor, Motorized
MOU
Memorandum of Understanding
MP
Maintenance Practices
MP Modification Proposal
MP
Maintenance Procedure
MP
Main Processor
MPA
Maximum Power Assurance
MPB
Micro Processor Bipolar
MPD Maintenance Planning Document
MPDS
Maintenance Planning Data Support
MPL
Maximum Permitted Life
MPR
Multipurpose Register
MPS
Multiplex Power Supply
MPS
Maximum Performance Specifications
MPU Modem Processor Unit
MPU
Magnetic Pickup
MQPB
Minimum Quantity Price Break
mr/hr
Milliroentgens per Hour
MRA
Minimum Reception Altitude
MRB Maintenance Review Board
MRB
Materials Review Board
MRBD
Maintenance Review Board Document
mrem/hr
Millirems per hour
MRIU
Maintenance & Recording Interface Unit
MRS
Malfunction Reporting Systems
MRS
Maintenance, Reliability, Supportability
MRTT
Multi Role Tanker Transport
MRW Maximum Ramp Weight
MS
Military Standard
MS
Maintenance Schedule
MSA Minimum Safe Altitude
MSB Most Significant Bit
MSC
Maintenance Steering Committee
MSC
Airbus Materiel Support Centre
MSCN
Manufacturer Specification Change Notice
MSD
Mass Storage Device
MSG Message
MSG Maintenance Steering Group
MSI
Medium Scale Integrated
MSI Maintenance Significant Item
MSL Mean Sea Level
MSL
Maintenance Significant Item List
MSM Monitoring System Module
MSN Manufacturer Serial Number
MSTR Master
MSU Media Server Unit
MSU Mode Selector Unit (IRS)
MSU
Magnetic Sensor Unit
MSU Motor Switching Unit
MSW Microswitch
MT
Mount
MTBD Mean Time Between Defects
MTBF Mean Time Between Failures
MTBI
Mean Time Between Inspection
MTBIFS
Mean Time Between In Flight Shut-down
MTBPR
Mean Time Between Premature Removals
MTBR Mean Time Between Removals
MTBT
Mean Time Between Trouble
MTBUR Mean Time Between Unscheduled Removals
MTE
Manual Test Equipment
MTG Mounting
MTGC
Mounting Center
MTI Multi Tank Indicator
MTN
Motion
MTO Maximum Take-Off
MTO
Météo
MTOGW Maximum Takeoff Gross Weight
MTOP
Maintenance Task Operating Plan
MTOW Maximum Design Takeoff Weight
MTP Maintenance and Test Panel (AFS)
MTR
Meter
MTRM
Mid Term Planning Meeting
MTS
Maintenance Training Simulator
MTTF Mean Time to Failure
MTTR Mean Time to Repair
MTTUR Mean Time to Unscheduled Removal
MTUR
Mean Time Between Unscheduled Removals
MTW Maximum Design Taxi Weight
MTXW
Maximum Taxi Weight
MU Management Unit
MUX Multiplex, Multiplexer
MV
Multivibrator
MVT Movement
MWARN
Master Warning
MWC
Master Warning Computer
MWE
Manufacturer's Weight Empty
MWG
Maintenance Working Group
MWP
Master Warning Panel
MWS
Master Warning System
MXR Mixer
MZFCG
Maximum Zero Fuel Center of Gravity
MZFW Maximum Design Zero Fuel Weight
n
Load Factor
N
Newton
N
Normal
N
Neon
N North
N MOS
N-Channel Metal Oxide Semiconductor
N MOS Negative Metal Oxide Semiconductor
N.O.R
Normal Operating Range
N/A Not Applicable
N/P
Next Page
N/W Nose Wheel
N/WS Nose Wheel Steering
N1 Low Pressure Rotor Speed
N1 Engine Fan Speed
N1.D N1 Descent
N1.L N1 Latch
N2 High Pressure Rotor Speed
NAA
National Aviation Authority
NAC Nacelle
NAC Nacelle Air Cooling
NAC STA
Nacelle Station
NACA
National Advisory Committee for Aeronautics
NAI Nacelle Anti-Icing
NAS Navy and Army Standard
NASA National Aeronautics and Space Administration
NatCo
National Company
NATS North American Telephone System
NAV Navigation
NAVAID Navigation Aid
NBCM
Normal Brake Control Manifold
NBF Network BITE Function
NBPT No Break Power Transfer
NBS
National Bureau of Standards
NBSELV Normal Brake Selector Valve
NC Normally Closed
NCC
Nacelle Compartment Cooling
NCD No Computed Data
NCH
Noise Compensated Headset
NCR NSS Communication Router
NCU
Navigation Computer Unit
NCU NSS Control Unit
NCV Nacelle Cooling Valve
ND Navigation Display
ND
Navigation Database
NDB
Navigation Data Base
NDB
Non-Directional Radio Beacon
NDB Non-Directional Beacon
NDM Noise Definition Manual
NDT Non-Destructive Test
NEG Negative
NFC
Not Fully Closed
NFO
Not Fully Open
NFOV Narrow Field of View
NHA Next Higher Assembly
NLA
Non-Listed Assembly
NLCP
Noise Level Calculation Program
NLG Nose Landing Gear
NM
Nautical Mile
Nm
Moment (Newtonmeter)
NMI Non Maskable Interrupt
NO Normal Operation
NO
Normal Operation in SSM
NO Normally Open
No Number
NonflaG
Non-Flammable Compressor Gas
NOPT
No Procedure Turn Required
NORM Normal
NORM ALIGN
Normal Alignment
NOTAM
Notice to Airmen
NOVOLRAM
Non-Volatile Random Access Memory
NOVOLRAM Non-volatile Random Access Memory
NP
Non Procurable
NPN
Negative-Positive-Negative
NPT
National Taper Pipe (Thread)
NPV
Net Present Value
NRC
Non-Recurring Cost
NRP
Navigation Reference Point
NRZ
Non Return To Zero
NS No Smoking
NSA Norme Sud Aviation
NSCM NATO Supply Code for Manufacturers
NSDW Non Specific Design Work
NSIU Nose Static Interface Unit
NSS Network Server System
NSU
Network Server Unit
NTM Nondestructive Testing Manual
NTO
No Technical Objection
NTSC National Television System Committee
NTWK Network
NUA
Normal Unlock Actuator
NUM Numerical
NVM Non-Volatile Memory
NVM
Non Volatile Memory
NW
Nose Wheel
O Open
O
Orange
O/C
Open Circuit
O/P Output
O2 Oxygen (Symbol)
OADMT
Overall Aircraft Design Management Team
OAMS Onboard Asynchronous Messaging Service
OANC OANS
OASI
Onboard Airport Navigation Computer Onboard Airport Navigation System
Operation and Service Instruction Manual
OAT Outside Air Temperature
OBCE On-Board Control Equipment
OBCEww On-Board Control Equipment worldwide
OBOGS On Board Oxygen Generation System
OBRM
On Board Replaceable Module
OBS
Omni Bearing Selector
OBS
Organization Breakdown Structure
OBSV
Observation
OBSVR
Observer
OC
On Condition
OC OC Open Circuit
OC
Overcurrent Order Card
OC Oceanic Clearance
OCCPD
Occupied
OCCPNT Occupant
OCL
Obstacle Clearance Limit
OCM Outflow valve Control Module
OCM
Out of Control Months
OCS
Obstacle Clearance Surface
OCS
Overall Customer Satisfaction
OCSM Outflow valve Control and Sensor Module
OD ODU Outside Diameter Optical Display Unit
OEB
Operating Engineering Bulletin
OEM
Original Equipment Manufacturer
Operational Empty Weight Overfrequency
Onboard Flight Data Monitoring Off Reset
OFFR
Off/Reset
OFMV Oil Flow Management Valve
OFST Offset
OFV Outflow Valve
OG
Operational Group
OGV Outlet Guide Vane
OH Opposite Hand
OHDS OverHeat Detection System
OHDU Overheat Detection Unit
OHP
Overhead Panel
OHSC Overhead Stowage Compartment
OHU Optical Head Unit
OI
Operational Interruption
OIS Onboard Information System
OIT Oil Inlet Temperature
OIT
Operator Information Telex
OIT Onboard Information Terminal
OJT
On Job Training
OK Correct
OLIVER
Output Level Intended for Very Excellent
Reproduction
OLMS
Operational Loads Monitoring System
OLW
Operational Landing Weight
OM
Overhaul Manual
OM Outer Marker
OMM
Overhaul Manual Manufacturer
OMS Onboard Maintenance System
OMT Onboard Maintenance Terminal
OMTBF
Observed Mean Time between Failure
OMTS On-Board Mobile Telephony System
OMV
Overhaul Manual Vendor
ONS
Omega Navigation System
OOT Oil Outlet Temperature
OP
Operational
OEW OF OFDM
OFF/R
OP
Opalescent
OPAL
Order Processing Automated Line
OPC
Operational Program Configuration
OPER Operative/Operation/Operating
OPMS Oleo Pressure Monitoring System
OPNG Opening
OPP Opposite
OPS Operations
OPS
Operational Program Software
OPT Optional
OPT Optimum
OPTL
Optional
OPTS Oleo Pressure and Temperature Sensor
OPU Overspeed Protection Unit
OPV Overpressure Valve
OR
Operational Reliability
ORF
Orifice
Org Per
Organic Peroxide
ORM
Onboard Replaceable Module
ORT Owner Requirement Table
ORVD
Overpressure Relief Valve with Dump Function
ORZ
Omni Range Zero
OS Operating System
OSC
Oscillator
OSCU Oxygen System Control Unit
OSG
Overspeed Safety Governor
OSS
Option Selectable Software
OTD
On Time Delivery
OTH
On Time Handover
OTOW
Operational Take-Off Weight
OU Outlet Unit
OUT Outlet
OUT
Output
OUTB Outbound
OUTBD Outboard
OUTFLW Outflow
OUTR Outer
OV
Over
OVBD Overboard
OVF
Over Frequency
OVFL Overflow
OVHD Overhead
OVHT Overheat
OVLD Overload
OVPRESS Overpressure
OVRD Override
OVSP Overspeed
OVSTEER Oversteer
OVV
Overvoltage
OW
Outer Wing
OWD Open World Diode
OWE
Operating Weight Empty
OXY Oxygen
Oxy M
Oxidizing Material
OZ
Ounce
P Purple
P
Roll Rate
P
Pressure
P(-+ OFF)
Polarity (minus, plus, off)
P.ALT
Profile Altitude
P.CLB
Profile Climb
P.DES
Profile Descent
P.EPR
Profile EPR
P.MACH
Profile Mach
P.N1
Profile N1
P.SPD
Profile Speed
P/B Pushbutton
P/BSW Pushbutton Switch
P/C Printed Circuit
P/L
Payload
P/P ROM
Preprocessor ROM
PA Passenger Address
PA
Public Address
Pa
Pascal
PA AMP
Passenger Address Amplifier
PAD
Partner Agreement Document
PADS Pneumatic Air Distribution System
PAL
Programmable Array Logic
PAR
Precision Approach Radar
PARAM Parameter
PARK Parking
PAS Pitch Attitude Sensor
PATCC
Production Aircraft Test Completion Certificate
PATM
Production Aircraft Test Manual
PATS Passenger Air-to-Ground Telephone System
PAX Passenger
PB
Policy Board
Pb
Pressure Ambient
PBE Protective Breathing Equipment
PBIT Power-Up Built-in Test
PBM Power Plant Build-up Manual
PBS
Product Breakdown Structure
PBSELV Park Brake Selector Valve
PBSW Pushbutton Switch
PC Pack Controller
PC
Packing Card
PC Personal Computer
PCA
Positive Control Airspace
PCA
Portland Cement Association
PCB Printed Circuit Board
PCD
Performance Compliance Document
PCDM Primary Contactor Driver Module
PCDS Primary Contactor Driver System
PCE
Personal Consumption Expenditures
PCF
Passenger Cum Freighter
PCM Power Conditioning Module
PCM Pulse Code Modulation
PCOS Power Cowl Opening System
PCPU Primary COS Power Unit
PCT
Percent
PCT Probe Compensator Temperature
PCU Passenger Control Unit
PCU Power Control Unit
PCU Power Controller Unit
PD Principle Diagram
PD
Pitch Diameter
PDC
Procurement Data Card
PDC
Panel Display Catalog
PDCS Power Distribution Control System
PDDC
Provisioning Descriptive Data Card
PDF
Portable Document Format
PDL Portable Data Loader
PDLCU
Privacy Door Lock Control Unit
PDLS
Privacy Door Lock System
PDM
Post Delivery Modification Material
PDM
Product Data Management
PDM
Privacy Door Module
PDMC Power Distribution Maintenance Computer
PDMI Power Distribution Maintenance Interface
PDO PW (A330)
PDRC
Procurement Data Reference Card
PED Pedestal
PED Portable Electronic Device
PEDMU Primary Electrical Distribution Management Unit
PEF Pylon Extension Fairing
PEM
Performance Engineers Manual
PEP
Performance Engineers Program
PEPDC Primary Electrical Power Distribution Center
PERC
Percussion
PERF Performance
PERM Permanent
PES Passenger Entertainment (System)
PES
Production Engineering Specification
PES
Passenger Entertainment System
PESAR Passenger Entertainment System Audio Reproducer
PESC PES Controller
PESMMUX Passenger Entertainment System Main Mux
PF Pilot Flying
PF PFD Power Factor
PFEV
Primary Flight Display Power Failure Event
PFF
Pre-First Flight
PFIN
Power Failure Interrupt
PFIS PFQ Passenger Flight Information System Preselected Fuel Quantity
PFR
Post Flight Report
PFS
Pre-Feasibility Study
PFTU Pedal Feel and Trim Unit
PG
Page
PG BUS
Program Bus
PH Phase
pH
Acidity or Alkalinity
PHA
Preliminary Hazard Analysis
PHC Probe Heat Computer
phi
Bank Angle
phi N
Nominal Bank Angle
PHR
Pounds per Hour
PI
Procedure Turn to an Intercept
PIA
Programmable Interface Adapter
PIA
Peripheral Interface Adapter
PIH
Pressure Interstage Hydraulic (PW eng)
PIM
Programming and Indication Module
PIN PROG PIPC Pin Programming
PIR
Power Plant Illustrated Parts Catalog Pressure Interstage Return
Pilot Report
Passenger Interface and Supply Adapter
PIU Passenger Information Unit
PIX
Picture
PK
Pink
PL
Plug
PL Plate
PLA Power Light Adapter
PLATF
Platform
PLCRD Placard
PLS
Pulse
PLT
Pilot
PLYWD
Plywood
PM
Phase Modulation
PIREP PISA
PM
Pounds per Minute
PMA
Parts Manufacturing Approval
PMA Permanent Magnet Alternator
PMAT Portable Multipurpose Access Terminal
PMC
Power Management Control, Controller
PMC
Process Material Control
PMC Power Management Control,controller
PMDB Production Management Data Base
PMG Permanent Magnet Generator
PMITS
Project Management Information
Technology System
PMM Personalization Memory Module
PMO
Project Management Office
PMP
Performance Monitoring Program
PMP Pump
PMP
Primary Maintenance Process
PMR Performance Maintenance Recorder
PMS Process and Material Specification
PMU Power Management Unit
PMUX
Propulsion Multiplexer
PMUX Power Plant Multiplexer
PN Part Number
PNEU Pneumatic
PNF Pilot Non Flying
PNL Panel
PNP
Positive-Negative-Positive
PNR Part Number
PO
Purchase Order
PO
Pickoff
POB Pressure-Off Brake
POM
Production Organisation Manual
POR Point of Regulation
POS Position
POST
Power on Self Test
POT Potentiometer
POXIP Passenger Oxygen Indication Panel
PPB
Provisioning Parts Breakdown
PPBU
Power Plant Build Up
PPC
Phosphor Protection Circuit
PPDC
Provisioning Procurement Data Card
PPDES
Product Performance Data Exchange
Specifications
PPE
Proofreading Process Evidence
PPI
Plan Position Indicator
PPIPC
Power Plant IPC
PPM
Performance Programs Manual
PPM
Pulse Position Modulation
PPM
Parts per Million
PPOS Present Position
PPU Position Pickoff Unit
PQAS
Program Quality Assurance System
PR Pressure
PR
Power Ready Relay
PR
Progress Meeting
PR
Regulated Pressure (downstream of bleed valve)
PRAM Prerecorded Announcement and Music
PRB Probe
PRCSG
Processing
PRCSR
Processor
PREAMP Preamplifier
PRECOOL Precooler
PRED Prediction
PRE-EMPT Pre-emptive
PREREC Prerecorded
PRES POS Present Position
PRESEL Preselection, Preselector
PRESS Pressure, Pressurization, Pressurize
PREV Previous
PRF
Interrogation Rate
PRGM
Program
PRI Priority
PRIM Primary
PRIM PRIMary System
PRIMES
Product Related Information Management Enterprise System
PRL
Parallel
PROC Procedure
PROC T
Procedure Turn
PROF Profile
PROG
Progress
PROG Program, Programming
PROJ Projector
PROM Programmable Read Only Memory
PROS
Present Position
PROT Protection
PROX Proximity
PRPHL Peripheral
PRR Power Ready Relay
PRSRZ
Pressurize
PRSRZG Pressurizing
PRV Pressure Regulating Valve
PS
Process Solution
PSCU Proximity Switch Control Unit
PSDU Power Supply Decoupling Unit
PSI Pound per Square Inch
PSIA
Pounds per Square Inch Absolute
PSIC Proximity Sensor Interface Card
PSIG
Pounds per Square Inch Gage
PSIU Passenger Service Information Unit
PSNR
Positioner
PSPM
Product Support Procedures Manual
PSQM
Propulsion System Quality Management
PSS Passenger Services System
PSSA
Preliminary System Safety Assessment
PSTN
Public Switch Telephone Network
PSU Passenger Service Unit
PSU
Power Supply Unit
PSUD
Passenger Service Unit Decoder
PSV
Planned Shop Visit
PT Point
PT
Switching Pressure of HP Valve
PT CODE
Part Code
PTC Positive Temperature Coefficient
PTDC
Provisioning Technical Data Card
PTM
Performance Training Manual
PTP
Programming and Test Panel
PTR Push to Reset
PTR
Printer
PTS
Purchaser Technical Specification
PTT PTT Push to Test Push-to-Talk
PTT
Push-to-Test
PTU Power Transfer Unit
PTU
Power Transformer Unit
PU Pick Up
PU
Panel Unit
PU PU PURS Parts Usage Processing Unit Purser
PVC
Polyvinyl Chloride
PVD
Para Visual Director
PVI PVIS Paravisual Indicating
PW
Passenger Visual Information System Pratt and Whitney
PW Pratt & Whitney
PWCU P Potable Water Control Unit
PWIP Potable Water Indication Panel
PWM
Pulse Width Modulator
PWR Power
PWS Predictive WindShear
PWS
Potable Water System
PWSP Potable Water Service
PYL
Panel Pylon
QA
Quality Assurance
QAD Quick-Attach-Detach
QAM Quadrature Amplitude Modulation
QAR Quick Access Recorder
QAT Quadruple ARINC Transmitter
QC
Quick Change
QC
Quality Control
QD Quick Donning
QDB
Quality Directors Board
QDR
Magnetic Heading to a Station
QEI
Quality Event Information
QF
Quality Task Force
QIG
Quality Improvement Group
QIR
Quality Improvement Request
QLB
Quality Log Book
QMS
Quality Management System
QMU QAM Modulator Unit
QPL
Qualified Products List
QRH
Quick Reference Handbook
QSR
Quarterly Service Reports
QSR
Quality Survey Report
qt
Imperial quart or United States quart
QT
Quart (US)
QTE
True Heading to a Station
QTY Quantity
QTZ
Quartz
QUJ
True Radial from a Station
R Red
R Radius
R
Release
R
Rankine
R
Reset
R
Resistor
R
Yaw Rate
R Right
R&D
Research and Development
R/A/G
Red/Amber/Green
R/AD
Retro/Adaptation Drawing
R/C Rate of Climb
R/D Rate of Descent
R/H
Radar Height
R/hr
Roentgens per Hour
R/I Radio/Inertial
R/I
Removal/Installation
R/L Reading Light
r/min
Revolutions per Minute
R/T
Receiver Transmitter Unit
R/T Radio Transmit
RA
Resolution Advisory
RA
Redundancy Assurance
RA Radio Altimeter, Radio Altitude
RAAS Runway Awareness and Advisory System
RAC
Rules of the Air and Air Traffic Control
RAC Rotor Active Clearance
RACC Rotor Active Clearance Control
RACON
Radar Beacon
RACSB Rotor Active Clearance Start Bleed
RAD Radio
RAD
Random Access Device
RAD
Roll Anticipation Distance
RADCON
Radar Data Converter
RadM
Radioactive Material
RADVR Random Access Digital Video Reproducer
RAG
Repair Assessment Guidelines
RAI Ram Air Inlet
RAIL
Runway Alignment Indicator Light System
RAIMS Radio and Audio Integrating Management System
RALTU
Reprogrammable Annunciator Light Test Unit
RAM Random Access Memory
RAPCON
Radar Approach Control
RAS
Repair Design Approval Sheet
RASC
Reservoir Air Supply Cooler
RASCI
Responsible, Accountable, Support, Consulted, Informed
RAT Ram Air Turbine
RAT
Ram Air Temperature
RATC Remote Air Traffic Control
RAX
Random Access Transfer Memory
RBN
Radio Beacon
RBP Right Bottom Plug
RC
Reference Chord
RC Repetitive Chime
RC
Recurring Cost
RCC Remote Control Center
RCC Remote Charge Converter
RCCB Remote Control Circuit Breaker
RCCBM RCCB Module
RCCU
Remote Calibration Control Unit
RCDG
Recording
RCDR Recorder
RCL Recall
RCLM
Runway Center Line Marking
RCLS
Runway Center Line Light System
RCP Reverse Current Protection
RCPT Receptacle
RCPTN Reception
RCSM
Resident Customer Support Manager
RCT Rear Center Tank
RCVR Receiver
RCVY Recovery
RD Retro Drawing
RD
Right Display
RDC Remote Data Concentrator
RDDMI
Radio Dual Distance Magnetic Indicator
RDNG
Reading
RDY Ready
READG Reading
RECIRC Recirculate, Recirculation
RECOG
Recognition
RECONF Reconfiguration
RECT Rectifier
RED Reduction
REDCR Reducer
REDUND Redundancy
REF Reference
REF ALIGN
Reference Alignment
REFLNG
Refueling
REFR
Refrigerator
REFUEL Refueling
REG Regulator
REG
Register
REGUL Regulation
REIL
Runway End Identification Lights
REL Reluctance
REL Release
rem/hr
Rems per Hour
REP
Reporting Point
REP Repository
REPL BY
Replaced by
RES Resistance
RET Retract
RET
Return
RETR
Retract
RETRD Retracted
RETRG
Retracting
RETRN
Retraction
REV Reverse
REV Revise, Revision
RF Radio Frequency
RFA
Request for Amendment
RFC Request for Change
RFC
Request For Comments For comments from IETF
RFI Request for Information
RFI Radio Frequency Interference
RFP
Request for Proposal
RFR
Request for Revision
RFS
Request for Service
RFS
Regardless of Feature Size
RFS
Reason for Selection
RFTI
Request For Technical Information
RFU Radio Frequency Unit
RFW Request for Work
RFX
Generic term for an RFI, RFTI or RFP
RGLRD
Regulated
RGLTG
Regulating
RGLTN
Regulation
RGTR
Register
RH Right Hand
RHEO Rheostat
RHL Rudder Hinge Line
RJB
Radio Junction Box
RK
Rack
RLA Reverser Lever Angle
RLG
Ring Laser Gyro
R-LMF Right Side Local Maintenance Function
RLS
Remote Light Sensor
RLS
Right Line Select Key
RLSED
Released
RLTD
Related
RLY Relay
RM
Radio Magnetic
RMCU
Remote Magnetic Compensation Unit
RMI Radio Magnetic Indicator
RMO
Retrofit Modification Order
RMO
Request for Modification Order
RMO Retrofit Modification Offer
RMP
Right Middle Plug
RMP Radio Management Panel
RMP Radio and Audio Management Panel
RMS
Root Mean Square
RMT Remote
RMU
Radio Management Unit
RNAV
Area Navigation
RNG Range
RNI
Radio Navigation Indicator
RoI
Return on Investment
ROLR Roller
ROLS Remote Oil Level Sensor
ROM Read Only Memory
R-OMS Right Side Onboard Maintenance System
ROTG Rotating
RPCU Residual Pressure Control Unit
RPDR Reproducer
RPF Reporting Processing Function
RPG
Report Program General
RPLNT Repellent
RPM Revolution per Minute
RPSA Rotating Pressure Sensing Assembly
RPTG
Reporting
RPTG Repeating
RPTR Repeater
RPU
Receiver Processor Unit
RQ
Recommended Quantity
RQRD Required
RR
Low or Medium Range Frequency Radio Range Station
RR
Rudder Rib
RR Rolls Royce
RS
Repeating Stroke
RS
Rear Spar
RSA
Request for Service Allowance
RSP
Responder Beacon
RSPL
Recommended Spare Parts List
RSR
Route Surveillance Radar
RSS
Root Sum Square
RSS Receiver Surveillance System
RST Reset
RSU
Raster Shading Unit
RSV Reserve
RSVR Reservoir
RTA
Receiver Transmitter ARINC
RTC
Real Time Clock
RTCA
Radio Technical Commission for Aeronautics
RTE Route
RTF
Radio Telephony
RTF
Rich Text Format
RTG
Rating
RTK
Revenue Tonne Kilomètre
RTL
Rudder Travel Limiting
RTLU
Rudder Travel Limiting Unit
RTM Real Time Monitoring
RTN Return
RTNR
Retainer
RTO Rejected TakeOff
RTOLW
Runway Takeoff and Landing Weight
RTOW
Runway Takeoff Weight
RTR
Right Top Plug Router
RTRSW
Rotary Switch
RTRY Rotary
RTS RTT Return to Seat Return To Tank
RTU
Rate of Turn Unit
RTU Radar Transceiver Unit
RUD Rudder
RVCP Remote Video Control Panel
RVDT
Rotary Variable Differential Transducer
RVR
Runway Visual Range
RVS
Reverse
RVSM Reduced Vertical Separation Minimum
RVSN
Reversion
RVT
Rivet
RVT Rotary Variable Transformer
RWDS
RWK
RWY Runway
RZ
Return to Zero
S S South
s
Minimum Slat Retract Speed (EFIS) Second
S/C S/D Step Climb Step Descent
S/H
Sample and Hold
S/MECH Shortening Mechanism
S/R
Safety/Reliability
S/W SA Software Stress Analysis
SA
Single Aisle
SACU Stand Alone Compensator Unit
SAD
Spares Advance Data
SAD Stress Analysis Data
SADF
Spares Advance Data Form
SAE Society of Automotive Engineers
SAF Safety
SAFD
Safetied
SAL System Address Label
SALS
Short Approach Light System
SALSA Spot Array Light Supply Adapter
SAM Stress Analysis Manual
SAR Smart Access Recorder
SAS
Static Strength Approval Sheet
SAT Static Air Temperature
SATCOM Satellite Communication
SAV Starter Air Valve
SB Service Bulletin
SBB Swift Broadband
SBD
Single Blade Door
SBDB
Service Bulletin Data Base
SBEW
Standard Basic Empty Weight
SBI
Service Bulletin Index
SBL
Symbol
Rearwards Rework
SBS
Service Bulletin Effectivity Schedule
SC
Source Code
SC
Scale
SC Single Chime
SCAV Scavenge
SCCS
Sub-Contract Control Sheet
SCE Source
SCE
Showing Compliance Engineer
SCFM
Standard Cubic Feet Minute of Gaseous Airflow
SCG System Configuration Guide
SCH
Schematic
SCI Secure Communication Interface
SCL
Software Configuration Library
SCL
Software Control Library
SCN Specification Change Notice
SCO
Section Control
SCO
Section Controller
SCR
Screw
SCR
Specification Change Request
SCS
Single Channel Simplex
SCS Supplemental Cooling System
SCU Supplemental Control Unit
SCU System Control Unit
SCUP
Scupper
SD
System Drain
SD System Display
SDAC System Data Analog Converter
SDAC System Data Acquisition Concentrator
SDAU
Special Data Acquisition Unit
SDB
Signals Data Base
SDCU Smoke Detection Control Unit
SDD
System Description Document
SDF Smoke Detection Function
SDG
Spares Data Guide
SDI
Source Data Identifier
SDI
Source/Destination Identifier
SDN System Description Note
SDOF Single Degree of Freedom
SDP
Steering Disconnect Panel
SDTM
Structure Description Training Manual
SDU
Seat Display Unit
SDU Satellite Data Unit
SDW Specific Design Work
SE Simplified English
SE
Section
SEAL Sealing
SEB Seat Electronic Box
SEB
Service Evaluation Bulletin
SEC Spoiler Elevator Computer
SEC Secondary
SEC SECondary Computer
SECT Section
SEG
Segment
SEL Select, Selected, Selector, Selection
SELCAL Selective Calling System
SELV Selector Valve
SENS
Sensitivity
SEP
Separator
SEPDC Secondary Electrical Power Distribution Center
SEQ Sequence, Sequential
SER Serial Number
SER Serial
SER/PRL
Serial to Parallel
SERNO
Serial Number
SES Support Equipment Summary
SES
Supplier Equipment Specification
SET Setting
SF
Spot Face
SFC Specific Fuel Consumption
SFCC Slat Flap Control Computer
SFCC
Sideways Facing Crew Cockpit
SFCC
Sideways Facing Crew Configuration
SFE Seller Furnished Equipment
SFPI
Slats/Flaps Position Indicator
SFPM
Surface Feet per Minute
SG
Stroke Generator
SGCU Smart Galley Control Unit
SGML
Standard Generalized Markup Language
SGP
Stroke Generator Processor
SGU Symbol Generator Unit
SH
Sheet
SH ABS Shock Absorber
SHADE
Schedules Airbus Data Exchange
SHCM System Heating Control Module
SHDBL
Sheddable
SHED Sheddable, Shedding
SHKR
Shaker
SHLD Shield, Shielding
SHN
Scratch Hardness Number
SHPNG
Shipping
SHR PN Shear Pin
SHRD
Shroud
SHT Short
SI
Systeme International
SI Slip Indicator
SIAP
Structural Inspection Adjustment Program
SIC System Isolation Contactor
SID Standard Instrument Departure
SID
System Interface Definition
SIDP
System Installation Design Principles
SIE
Surface Industrielle Etendue
SIF
Selective Identification Feature
SIF
Spares Information File
SIG Signal
SIL
Service Information Letter
SIL Speech Interference Level
SIL
Software Information Library
SIM Simulation
SIN
Sine
SIR Service Identification Request
SIRD
System Installation Requirement Dossier
SIRU Secure Interface Router Unit
SIS
Spares Investment Study
SIS Standalone Identification System
SIU Server Interface Unit
SIV
Standard Item Variations
SJC
Standard Job Card
SKT Socket
SL
Service Letter
SL
Sea Level
SLA Small Light Adapter
SLD Slide, Sliding
SLI
System Level Integration
SLL
Shelf Life Limitation
SLMC
Service Life Limits and Maintenance Checks
SLP
Space Limited Payload
SLS
Side Lobe Suppression
SLS
Shop Loadable Software
SLT Slat
SLV
Sleeve
SM Standards Manual
SMA
Single Motor Actuator
SMART
Standard Modular Avionics Repair and Test
SMC System Manager Controller
SME
Subject Matter Expert
SMEL
Seat-Mounted Emergency Light
SMK Smoke
SML
SB Modification Crossreference List
SMO
Stabilized Master Oscillator
SN Serial Number
SNGL Single
SNIF
Sensitivity for Normal Interface
SNMP Simple Network Management Protocol
SNSG Sensing
SNSR Sensor
SO Shutoff
SOL Solenoid
SOP
Standard Operating Procedure
SOR
Statement of Requirements
SOS
Sell or Scrap
SOTM
System Operation Training Manual
SOV
Shut-off Valve
SOV Shut-Off Valve
SOW
Statement of Work
SP
Sampling
SP
Space
SPAD
Scratchpad
SPASE
Single Point Audio System Earth
SPATIAL
System for Acquisition and Processing of ARINC and Logic
SPC
Spare Parts Classification
SPD Speed
SPD/M
Speed-Mach
SPDB Secondary Power Distribution Box
SPE
Seller Purchased Equipment
SPE
Supplier Purchased Equipment
SPEC Specification
SPF
Specific Pathogen Free
SPFK
Specific
SPKR Speaker
SPL Sound Pressure Level
SPLC
Splice
SPLR Spoiler
SPLY Supply
SPM Signal Processing Module
SPMC
Service Process Material Control
SPMG
Shorted Permanent Magnet Generator
SPOP
Service Process Operation Procedure
SPP Software Pin Programming
SPPF
Software Pin Programming Function
SPR
Service and Performance Report
SPRDR Spreader
SPRT
Support
SPS
Service Process Solution
SPS/B
Superseded by
SPSA
Supplier Product Support Agreement
SPST Single Pole Single Throw
SQ Squelch
SQ-FT
Square-Feet
SQW
Square Wave
SR
Senior
SRD
Shorted Rotating Diode
SRD
System Requirement Document
SRE
Surveillance Radar Element of GCA
SRF Servicing and aircraft condition parameters Reporting Function
SRKL
Structural Repair Kit List
SRKM
Structural Repair Kit Manual
SRM Structural Repair Manual
SRP
Safety / Reliability Plan
SRPS Safe Redundant Power Supply
SRPSU Slide Release Power Supply Unit
SRS Speed Reference System
SRU Shop Replaceable Unit
SS
Sky/Shading
SSA
System Safety Assessment
SSA Side Slip Angle
SSA
System Safety Analysis
SSALS
Simplified Short Approach Light System
SSALSR
Simplified Short Approach Light System
Runway Alignment
SSB Single Side Band
SSC
Single Stroke Chime
SSC
Supplier Support Conditions
SSCVR Solid State Cockpit Voice Recorder
SSEC Static Source Error Correction
SSFDR Solid State Flight Data Recorder
SSG
Single Stroke Gong
SSI
Structural Significant Item
SSID
Supplemental Structural Inspection Document
SSM Sign Status Matrix
SSM
Solid State Memory
SSMM Solid State Mass Memory
SSP
System Specification
SSP
Significant In-Service Problems
SSPC Solid State Power Controller
SSR
Secondary Surveillance Radar
SSTDU Side Stick Transducer and Damper Unit
SSTU Side Stick Transducer Unit
STA
Straight-in-Approach
STA Station
STAB Stabilizer
STAR Standard Terminal Arrival Route
STARTG
Starting
STAT Static
STBY Standby
STC
Supplemental Type Certificate
STD
Standard Data Sheet
STDY
Steady
STELLA STair Electrical Light Lead Adapter
STG
Stage
STGR Stringer
STIF
Stiffener
STL
Steel
STL WARN
Stall Warning
STOM
System Operation Training Manual
STRG Steering
STRK Stroke
STRL
Structural
STRM
Short Term Review Meeting
STRM Secure open and Trip Resident Memory
STRUCT
Structure
STS
Spares Technical Specification
STS
Alignment Status
STS Status
STWG
Short-Term Working Group
STWG Stowage
STYPPLE
Sensitive Typical Phone Power Level
SUBMUX
Submultiplexer
SUCNL ACTN
Successional Action
SUCT Suction
SUM
Summing
SUPPL Supplementary
SUPPR
Suppressor
SUPSD BY
Superseded by
SURF Surface
SURV
Surveillance
SV Servovalve
SVA Stator Vane Actuator
SVCE Service
SVMTR
Servomotor
SVO Servo
SW Switch
SWRD
System Wiring Requirements Dossier
SWRD-A
System Wiring Requirements Dossier maturity A
SWRD-B
System Wiring Requirements Dossier maturity B
SWRD-C
System Wiring Requirements Dossier maturity C
SWTG Switching
SWY
Stopway
SyA
Systems Architect
SyCDR
System Critical Design Review
SyCID
System Configuration Index Document
SyCMP
System Configuration Management Plan
SyCP
System Certification Plan
SyCR
System Certification Review
SyD
System Designer
SyDAL
System Development Assurance Level
SyDAS
System Development Accomplishment Summary
SYM
Symmetry
SYN REF
Synchro Reference
SYNC Synchro, Synchronise
SYNTHR Synthetizer
SYNTHR
Synthesizer
SYS System
t
Rivet Spacing
T TRUE
T Turn
T Trim
T
Time
t
Equivalent Runway Thickness
t
Tonne
T
Thickness
T/C Top of Climb
T/C
Type Certificate
T/D Top of Descent
T/F Track of a Fixed Waypoint
T/R Thrust Reverser
T2C HP Compressor Inlet Temperature
T2CAS Traffic and Terrain Collision Avoidance System
T54 Low Pressure Turbine Inlet Temperature
TA
Traffic Advisory
TA
Twin Aisle
TAB
Tabulation and Interpolation Program
TAB
Test and Bite Panel
TAC Taxiing Aid Camera
TAC
Technical Acceptance Completion
TACAN Ultra-high Frequency Tactical Air Navigation Aid
TACH Tachometer
TACS Taxiing Aid Camera System
TACT Tactical
TADB
Terrain/Airport DataBase
TADD Trim Air Drive Device
TAP
Transient Acoustic Propagation
TAR
Terminal Area Surveillance Radar
TAS True Airspeed
TAT Total Air Temperature
TAWS Terrain Awareness and Warning System
TB Terminal Block
TBC To Be Confirmed
TBO Time Between Overhauls
TBSV
Time Between Scheduled Visits
TBU
Time Base Unit
TBV Transient Bleed Valve
TC Thermocouple
TC
Takeoff Charts
TC Theoretical Contour
TC HP Turbine Case Pressure
TCA Throttle Control Assy
TCAS Traffic Alert and Collision Avoidance System
TCC Turbine Clearance Control
TCC Thrust Control Computer
TCC Turbine Case Cooling
TCCS
Thrust Control Computer System
TCFN
Two's Complement Fractional Notation
TCIU Telephone Communication Interface Unit
TCM
Technical Coordination Meeting
TCM Thrust Control Malfunction
TCP
Takeoff Charts Computation Program
TCP
Transmission Control Protocol
TCQ
Time, Cost and Quality
TCS Temperature Control System
TCU Throttle Control Unit
TD
Time Delay
TD
Technical Dossier
TD
Technical Disposition
TDC
Time Delay Closing
TDCR
Type Design Change Request
TDD Technical Design Directive
TDO
Time Delay Opening
TDP
Touchdown Point
TDS Technical Data Sheet
TDSC
Technical Data Steering Committee
TDU
Time Display Unit
TDU
Technical Description Unit
TDY
Temporary Duty
TDZL
Touchdown Zone Lights
TE HP Stage Air Temperature
TE Trailing Edge
TEC Turbine Exhaust Case
TED Tool and Equipment Drawing
TEDB
Tool and Equipment Data Bank
TEFO Total Engine Flame Out
TEI Tool and Equipment Index
TEL
Telephone
TELECOM Telecommunications
TEM Illustrated Tool and Equipment Manual
TEMP Temperature
TEMP
Test and Evaluation Master Plan
TEO Engine Oil Temperature
TER
Technical Event Report
TEST SIG
Test Signal
TF
Task Force
TFR
Trouble and Failure Report
TFR
Transfer
TFTS Terrestrial Flight Telephone System
TFU Technical Follow-up
TGB
Transfer Gearbox
TGL
Touch-and-Go Landing
TGT Target
THD
Thread
THERAP Therapeutic
THMS
Thermistor
THR Thrust
THRM Thermal
THRMST Thermostat
THROT Throttle
THROT PUSH Throttle Pusher
THS Trimmable Horizontal Stabilizer
TI
Technical Instruction
TI
Technical Information
TI
Track to an Interrupt
TIA
Type Inspection Authorization
TIC Turbine Impingement Cooling
TICC
Technical Information and Communication Committee
TID
Technical Information Document
TID
Technical Impact Difference
TIFF
Tagged Information File Format
TIR
Technical Incident Report
TIR
Type Inspection Report
TIT Turbine Inlet Temperature
TK
Ground Track Angle
TK Tank
TKE Track Angle Error
TKE
Track Error
TL
Tooling List
TL
Transmittal Letter
TLA Throttle Lever Angle
TLAR
Top Level Aircraft Requirement
TLB
Technical Log Book
TLC
Takeoff and Landing Chart Computation Program
TLCS Trolley Lift & Conveyance System
TLMC
Time Limits and Maintenance Checks
TLS Transcowl Locking System
TLS Trolley Lift System
TLSRD
Top Level System Requirement Document
TLU Travel Limitation Unit
TLV Tertiary Lock Valve
TM
Terminal Module
TM Torque Motor
TM Transportability Manual
TMA
Terminal Control Area
TMA
Twin Motor Actuator
TMC
Target Must Cost
TMG
Timing
TMLB Technical and Maintenance LogBook
TMR Timer
TN
Technical Note
TO Takeoff
TO/APPR
Takeoff/Approach
TOC
Table of Contents
TOD
Takeoff Distance
TOGA Takeoff/Go Around
TOGW Takeoff Gross Weight
TOIL Toilet
TOL Tolerance
TOPA TakeOff Performance Application
TOR
Takeoff Run
TOT Total
TOT
Transfer of Title
TOW Takeoff Weight
TOW
Towing
TP
Top Plug
TP
Test Point
T-P
Turn Point
TPA
Technical Publications Agreement
TPCI
Technical Publications Combined Index
TPG
Technical Publications Guide
TPGG
Technical Publications General Guide
TPIB
Technical Publications Illustration Bank
TPIC
Tire Pressure Indicating Computer
TPIS
Tire Pressure Indicating System
TPMM
Technical Publications Management Meeting
TPOP
Technical Publications Output Planning
TPPP
Technical Publications Production Planning
TPRD
Technical Publications Reference Document
TPS Temporary Protection System
TPSP
Third Party Software Provider
TPU Terminal Processor Unit
TPWD
Technical Publications Work Sharing Document
TR Temporary Revision
TR
Regulated Temperature (Downstream of precooler)
TR Transformer Rectifier
TR Thrust Reverser
TR
Turn Radius
TR
Truss
TR Transistor
T-R Transmitter-Receiver
TRA
Test Report Analysis
TRACON
Terminal Radar Control
TRANS Transition
TRANSF
Transfer
TRC Thrust Rating Computer
TRGT Target
TRIG Trigger
TRK
Track
TRK Track (angle)
TRLY Trolley
TROPO Tropopause
TRP Thrust Rate Panel - Thrust Rating Panel
TRQE Torque
TRQR
Torquer
TRS
Technical Repercussion Sheet
TRT
Turn Round Time
TRTO
Type Rating Training Organisation
TRU
TRUE
TRU
Transformer Rectifier Unit
TRV Travel
TS
Trim Sheet
TSD
Trouble Shooting Data
TSDB
Trouble Shooting Data Base
TSF Trouble Shooting Function
TSH
Trouble Shooting Handbook
TSI
Time Since Installation
TSLSV
Time Since Last Shop Visit
TSM Trouble Shooting Manual
TSO
Time Since Overhaul
TSO
Technical Service Order (FAA)
TSO
Technical Standard Order
TSP Tank Signalling Processor
TSPA Tank Signal Processor A
TSPB Tank Signal Processor B
TST
Test
TT Trim Tank
TT
Switching Temperature of HP Valve
TT
Total Time
TTG
Time to Go
TTL Transistor Transistor Logic
TTR
Technical Trouble Report
TTS Trim Tank System
TU Tapping Unit
TURB Turbulence, Turbulent
TURB Turbine
TV Television
TVBC Turbine Vane and Blade Cooling
TVC
Turbine Vane Cooling
TVOR
Short Range VOR
TVOR
Very High Frequency Terminal Omnirange Station
TW
Twisted
TWLU Terminal Wireless LAN Unit
TWR
Tower
TWY
Taxiway
TX Transmission (TCAS to Transponder)
TYP Typical
TYPPLE
Typical Phone Power Level
Ú
Pitch Attitude
U/FLOOR Underfloor
U/S Unserviceable
UAC
Upper Area Control Centre
UADF User Application Definition File
UART
Universal Asynchronous Receiver Transmitter
UCS
User Certifiable Software
UD Upper Deck
UD
Document Unit ("Unité Documentaire")
UDC
Upper Deck Cargo
UDCC Upper Deck Cargo Compartment
UDCD Upper Deck Cargo Door
UDL
Unit Detail Listing
UDP User Datagram Protocol
UEB Underseat Electronic Box
UF Underfrequency
UHF Ultra High Frequency
UICDL User Interface Configuration Download List
ULB
Underwater Locator Beacon
ULD Unit Load Device
ULLI
Understep LED Light
ULM
Ultra Low Maintenance
UMS User Modifiable Software
UNBAL Unbalance, Unbalanced
UNCPLG
Uncoupling
UNCRCTD
Uncorrected
UND Under
UNIV Universal
UNLK Unlock
UNLKD Unlocked, Unlocking
UNSD
Unused
UPLK Uplock
UPPR Upper
UPR Upper
UR
Utilization Rate
US
United States
US
Under Speed
US
Upstream
USB Universal Serial Bus
USB
Upper Side Band
UTA
Upper Control Area
UTC Universal Time Coordinated
UUT
Unit Under Test
UV Under Voltage
UV Ultra-Violet
UVEROM
Ultra Violet Erasable Read Only Memory
UWBS Universal Wireless Backbone System
UWY
Upper Airway
V
Violet
V
Volt, Voltage
V Valve
V&V
Verification & Validation
V/L
VOR/LOC
V/L
VOR/Localizer
V/S V1 V1 V2 Vertical Speed
V2min
Critical Engine Failure Speed Decision Speed
Takeoff Safety Speed
Minimum Takeoff Safety Speed
V3 V4 Flap Retraction Speed Slat Retraction Speed
VA
Design Maneuvering Speed
VA
Heading with an Altitude Termination
VAC Voltage Alternating Current
VACBI
Video and Computer-Based Instruction
VACU Vacuum
VALDN
Validation
VAP
Visual Approach Procedure
VAR Variable, Variation
VAR
Visual-Aural Radio Range
VAR LEV HTY
Variable Lever Healthy
VASIS
Visual Approach Slope Indicator System
VB
Design Speed for Maximum Gust Intensity
VBV Variable Bleed Valve
VC
Design Cruising Speed
VC Ventilation Controller
Vc
Calibrated Airspeed
VCU Video Control Unit
VD
Heading to a DME Distance
VD
Design Diving Speed
VDAR Virtual DAR
VDC Voltage Direct Current
VDEV Vertical Deviation
VDF
Very High Frequency Direction Finding Station
VDFMDF
Demonstrated Flight Diving Speed
VDOS
Vendor Documentation On-line Service
VDR VHF Data Radio
VDU Video Display Unit
VEADB
Video on demand Enhanced Area Distribution Box
VEL Velocity
VENT Ventilation
VERT Vertical
VERT REV
Vertical Revise
VF
Design Flap Speed
VFCMFC
Maximum Speed for Stability Characteristics
VFE
Maximum Flap Extended Speed
VFEN
Predictive VFE at next flap/slat position
VFG Variable Frequency Generator
VFR Visual Flight Rules
VFTO
Final Takeoff Speed
VG
Vertical Gyro
VH
Maximum Speed in Level Flight with Maximum Continuous Po
VHCU Versatile Heating Control Unit
VHDU Versatile Heating Data Unit
VHF Very High Frequency
VHV Very High Voltage
VI
Heading to an Intercept
VIB Vibration
VIM
Vendor Information Manual
VIMU Video Multiplexer Unit
VL Virtual Link
VL CAPT
VOR/LOC Capture
VLE
Maximum Landing Gear Extended Speed
VLF Very Low Frequency
VLLDC
Very Low Level DC Voltage
VLO
Maximum Landing Gear Operating Speed
VLOF
Lift-off Speed
VLS Lower Selectable Speed
VLV Valve
Vm
Minimum Recommended Maneuvering Speed
Vm
Recommended Maneuvering Speed
VM
Maneuvering Speed
VM Voltmeter
VM
Heading with a Manual Termination
VMAN
Maneuvering Speed
Vmax
Maximum Operating Speed
VMAX
Maximun Allowable Airspeed
VMC
Minimum Control Speed with One Engine Inoperative
VMC
Visual Meteorological Conditions
VMCA
Minimum Control Airspeed
VMCG
Minimum Control Speed Ground
Vmin
Minimum Operating Speed
VMO
Maximum Operating Speed
VMOMMO
Maximum Operating Limit Speed
VMS
Minimum Selectable Speed
VMU Video Modulator Unit
VMU
Minimum Unstick Speed
VNE
Never-Exceed Speed
VNO
Maximum Structural Cruising Speed
VOD Video On Demand
VODDSU VOD Data Server Unit
VODMU VOD Modulator Unit
VODSU VOD Server Unit
VOL Volume
VOR
Very High Frequency Omnibearing Range
VOR VHF Omnidirectional Range
VOR
Very High Frequency Omnirange Station
VOR
Very High Frequency Omnidirectional and Radio Range
VOR.D VOR-DME
VORTAC Visual Omni-Range Tactical Air Navigation
VOT
Voter
VPSA
Vendor Product Support Agreement
VQAR Virtual QAR
VR Rotation Speed
VR
Voltage Regulator
VREF Landing Reference Speed
VR-HDG
Heading to a Radial
VRMS Volt Root Mean Square
VRU Video Reproducer Unit
VS
Min Steady Flt Spd at which Airplane is Controllable
VS
Stalling Speed at which Airplane is Controllable
VS
Stall Speed
VS1
Stalling Speed obtained in a specified Configuration
VS1
Min Steady Flt Spd obtained in a Specified Configuration
VSB
Vendor Service Bulletin
VSBN
Vendor Service Bulletin Number
VSBT
Vendor Service Bulletin Title
VSC Vacuum System Controller
VSCF Variable Speed Constant Frequency
VSCU
Video System Control Unit
VSD
Vertical Situation Display
VSEB Video Seat Electronic Box
VSEL
Autothrottle Selected - Approach Speed
VSI Vertical Speed Indicator
VSO
Stalling Speed or Minimum Steady Flight Speed in the Lan
VSS Stick Shaker Speed
VSV Variable Stator Vane
VSVA Variable Stator Vane Actuator
VSW Stall Warning Speed
VSWR Voltage Standing Wave Ratio
VT
Vertical Tail
VTOSS
Takeoff Safety Speed for Category A Rotorcraft
VTP
Vertical Tail Plane
VTR Video Tape Reproducer
VTS Vacuum Toilet System
VV Velocity Vector
VWM
Vendor Warranty Manual
VX
Speed of Best Angle of Climb
VY
Speed for Best Rate of Climb
W White
W
Wire
W
Weight
W
Watt
W West
W/V
Wind Direction and Speed
W3C
World Wide Web Consortium
WA
Wind Angle
WABSIC Wheel And Brake System Integrated Component
WACS Wireless Airport Communication System
WAI Wing Anti-Ice
WARN Warning
WASG
World Airlines and Suppliers Guide
WATOG
World Airlines Technical Operations
Glossary
WB
Wide Body
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
WBS
Work Breakdown Structure
WC
Wording Change
WCR
Weight and Balance Compliance Report
WD Warning Display
WD Wing Datum
WD Wiring Diagram
WDB Wall Disconnect Box
WDI
Wind Direction Indicator
WDM
Wiring Diagram Manual
WDO
Window
WEL
Wall Emergency Light
WFOV Wide Field of View
WG Wing
WG
Wave Guide
WG
Working Group
WGD WGDC Windshield Guidance Display Windshield Guidance Display Computer
WGDS WHC
WHL WIPCU
WIPDU
Windshield Guidance Display System Window Heat Computer
WIRC
Wheel
Water Ice Protection Control Unit Water Ice Protection Data Unit Warning -
Inhibition - Recall - Clear
WLDP WLG WLM Warning Light Display Panel Wing Landing Gear Wireless LAN Manager
WLP
Weight Limited Payload
WM
Wattmeter
WM
Wiring Manual
WMAXOP
Maximum Operational Speed
WO
Wash-out
WOR
Wear Out Rate
WOW Weight On Wheels
WP
Work Package
WPT Waypoint
WR
Weather Radar
WR
Weighing Report
WRG WRK Wiring
WS
Work, Working Wind Speed
WSCP
Warning and System Control Panel
WSCS Wheel Steering Control System
WSDP
Warning and System Display
WSHLD Windshield
WSR
Weekly Service Report
X FEED Crossfeed
X LINE Crossline
X VALVE Cross Valve
XARM
Cross Arm
XBAR Crossbar
XCHECK Crosscheck
XCVR Transceiver
XDCR Transducer
XFMR Transformer
XFR Transfer
XING Crossing
XLOAD Crossload
XLTR Translator
XML
Extensible Mark-up Language
XMSN Transmission
XMTR Transmitter
XPDR Transponder
XPNDR
Transponder
XREF
Crossreference
XSEC
Extra Section
XT
Reception (Transponder to TCAS)
XTAL
Crystal
X-TALK Cross-talk
XTK
Cross Track Deviation
XTK
Cross Track Error
XTK
Cross Track Distance
XWIND Crosswind
Y Yellow
Y/C Economy Class
YC
Tourist Class
YCF
Economy Class-Front
YCL
Economy Class Front
YCR
Economy Class-Rear
YE
Year
YES
Yankee Escape System
YTPPP
Yearly Technical Publications Processing Planning
Z Zone
Z Greenwich Mean Time
ZC Zone Controller
ZFCG Zero Fuel Center of Gravity
ZFW Zero Fuel Weight
Zp Pressure Altitude
Zpi
Indicated Pressure Altitude
$
Dollar, Hexadecimal Address
%
Percent (Symbol)
¢P
Differential Pressure
°C
Degrees Centigrade
°C
Degrees Celsius
°F
Degrees Fahrenheit
°K
Degrees Kelvin
°R
Degrees Rankine
