TM 1-1520-238-10
B-6
Change 9
Appendix B – Abbreviations and Terms (cont)
ENS
Environment Control System
ESS
Essential
ETE
End-to-End (FD/LS On-Command Test)
EXT
Extend, External, Extinguisher
EXTGH
Extinguisher
EXT LTS
External Lights
EXT-RET
Extend, Retract
EXT TK
External Tank, Auxiliary Fuel Tank
F
FAB
Fixed Action Button
FAB
Forward Avionics Bay
FAT
Free Air Temperature
FC
Flight Controls
FCC (AC)
Fire Control Computer
FCP
Fire Control Panel
FCS
Fire Control System
FD/LS
Fault Detection and Location System
FFAR
Folding-fin Aerial Rocket
FIRE BTL
Fire Bottle
FLIR
Forward Looking Infrared
FLPN
Flight Planning
FLT
Flight
FLT INST
Flight Instrument (lighting)
FLTR
Filter
FM
Frequency Modulation
FOC
Focus
