DCM Detachable Configuration Module
DCU Data Collection Unit
DEL Delete
DEOS Digital Engine Operating System (MAU)
DET Detector
DETR Detector
DF Directional Finder
DG Directional Gyro
DGR Degraded
DH Decision Height
DICP Display Instrument Control Panel (Display Controller) (same
as DC)
DIM Dimmer / Dimmed / Dimming
DIR Direct / Direct to
DME Distance Measuring Equipment
DMG Digital Map Generator
DN Down
DOP Dilution of Precision
DR Dead Reckoning
DSCWD Discrete Worth (EEC)
DTK Desired Trak
DU Display Unit
EAPS Engine Air Particle Separator
EASA European Aviation Safety Agency
ECL Engine Control Lever
ECP Engine Control Panel
ECS Environmental Control System
ECU Engine Control Unit
EDS Electronic Display System
EEC Electronic Engine Control
EGPWS Enhanced Ground Proximity Warning System
ELEC Electric / Electrical
ELT Emergency Locator System
EMERG Emergency
EMS Emergency Medical Service
ENAC Ente Nazionale Aviazione Civile
ENBL Enable / Enabled
ENG Engine
EPU Estimated Position Uncertainty
ESS Essential
ET Elapsed Time
ETA Estimated Time of Arrival
ETE Estimated Time En-route
EXT External
EXTG Extinguish / Extinguisher
EXTN External
FAA Federal Aviation Administration
FAF Final Approach Fix
FCOC Fuel Cooled Oil Cooler
F/C Flight Control
FCP Fuel Control Panel
FCU Fuel Computer Unit