case-heading operation

attitude-and-heading reference system / attitude and heading reference system (AHRS)

case (cartridge case)

ammunition case, ammo case

cartridge-case deflector (cartridge case deflector)

clandestine operation; covert operation

humanitarian operation; humanitarian relief operation (HUMRO)

PZ operation (pick-up zone operation)

noncombatant evacuation operation (NEO); non-combat evacuation operation

aircraft heading

compass heading

attack heading

strapdown attitude heading reference system

heading programmer

landing heading

runway heading

attitude-and-heading reference system (AHRS)

reciprocal heading

reciprocal heading index

true heading (TH)

heading and attitude reference system

replacement attitude and heading reference system

great circle heading

grid heading

gyromagnetic heading

heading alignment

heading clearance

heading selector

interception of runway heading

magnetic heading

magnetic heading deviation

ramp heading

heading indicator