貝爾直升機(jī) Bell Helicopter

ADF — Automatic direction finder
AIR COND — Air conditioner
A/F — Airframe
ALT — Altimeter
ANTI COLL LT — Anticollision light
ATT — Attitude
AUTO — Automatic
AUX — Auxiliary
BATT — Battery
BIT — Built in test
BL — Buttock line
BLO — Blower
BRT — Bright
°C — Degrees Celsius
CAUT — Caution
CAUT LT — Caution lights
CG — Center of gravity
CKPT — Cockpit
CM — Centimeter (s)
COMM — Communication
CONT — Control

dBA — Decibel, “A” type filter
DC — Direct current