EIU  Engine Interface Unit 
EIVMU  Engine Interface and Vibration Monitoring Unit 
EL  Equipment List 
EL  Electric 
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  Elevator 
ELEV  Elevation 
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  Engine Monitoring Unit 
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 
EO THR RED SPD  Engine Out Thrust Reduction Speed 
EOC  Engineering Order Change 
EOP  End of Part 
EOSID  Engine Out Standard Instrument Departure 
EOT  End of Tape 
EP  Entry Panel