ABBREVATION SIGNIFICATION -------------------------------------------------------------------------------COMPT Compartment
 COMPTR Comparator
 COND Conditioned, Conditioning
 CONFIG Configuration
 CONT Controller
 CONV Converter
 COOL Cooling, Cooler
 COS Cosine
 CPC Cabin Pressure Controller
 CPLR Coupler
 CPMS Cabin and Passenger Management System
 CPMU Cabin Passenger Management Unit
 CPRSR Compressor
 CPU Central Processing Unit
 CRC Continuous Repetitive Chime
 CRG Cargo
 CRS Course
 CRT Cathode Ray Tube
 CRZ Cruise
 CSD Constant Speed Drive
 CSM/G Constant Speed Motor/Generator
 CSTR Constraint
 CSU Command Sensor Unit
 CT Current Transformer
 CTL Central
 EFF : ALL
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ABBREVATION SIGNIFICATION -------------------------------------------------------------------------------CTL Control
 CTR Center
 CU Control Unit
 CUDU Current Unbalance Detection Unit
 CUR Current
 CVR Cockpit Voice Recorder
 CVT Center Vent Tube
 CW Clockwise
 D/D Engine Out Drift Down Point
 D/O Description and Operation
 DA Drift Angle
 DAC Digital to Analog Converter
 DAR Digital ACMS Recorder
 DC Direct Current
 DDRMI Digital Distance and Radio Magnetic Indicator
 DEC Declination
 DECEL Decelerate
 DECR Decrease
 DEF Definition
 DELTA P Differential Pressure
 DES Descent
 DEST Destination
 DET Detection, Detector
 DEU Decoder/Encoder Unit
 DEV Deviation
 EFF : ALL
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ABBREVATION SIGNIFICATION -------------------------------------------------------------------------------DFDR Digital Flight Data Recorder
 DFDRS Digital Flight Data Recording System
 DGI Digital Input
 DGO Digital Output
 DH Decision Height
 DIA Diameter
 DIFF Differential
 DIM Dimming, Dimension
 DIR Direction, Direct, Director
 DISC Disconnect, Disconnected
 DIST Distance
 DMA Direct Memory Access
 DMC Display Management Computer
 DME Distance Measuring Equipment
 DMU Data Management Unit
 DN Down
 DNLK Downlock
 DPDT Double Pole/Double Throw
 DPI Differential Pressure Indicator
 DR Dead Reckoning
 DRVR Driver
 DSCRT Discrete
 DSDL Dedicated Serial Data Link
 DSI Discrete Input
 DSO Discrete Output
 EFF : ALL
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ABBREVATION SIGNIFICATION -------------------------------------------------------------------------------DSPL Display
 DTG Distance to Go
 DTMF Dual Tone Multiple Frequency
 DU Display Unit
 E East
 ECAM Electronic Centralized Aircraft Monitoring
 ECB Electronic Control Box (APU)
 ECM Engine Condition Monitoring
 ECMU Electrical Contactor Management Unit
 ECON Economy
 ECP Ecam Control Panel
 ECS Environmental Control System
 ECU Electronic Control Unit
 EEC Electronic Engine Control
 EEPROM Electrically Eraseable Programmable Read Only Memory
 EFCS Electrical Flight Control System
 EFF Effective, Effectivity
 EFIS Electronic Flight Instrument System
 EGIU Electrical Generation Interface Unit
 EGT Exhaust Gas Temperature
 EIS Electronic Instrument System
 EIU Engine Interface Unit
 EIVMU Engine Interface and Vibration Monitoring Unit
 ELEC Electric, Electrical, Electricity
 ELEV Elevation, Elevator
 EFF : ALL
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ABBREVATION SIGNIFICATION -------------------------------------------------------------------------------EMER Emergency
 EMI Electromagnetic Interference
　
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