live - low-
- longitudinally unstable aircraft
- look-ahead capability
- look-down coverage
- look-down mode
- look-down shoot-down capability
- look-down shoot-down tactics
- look-down, shoot-down capable aircraft
- look-down/shoot-down threat
- look-into-turn capability
- look-up mode
- loom system
- loop
- loop bandwidth
- loop closure
- loop entry
- loop frequency response
- loop maneuver
- loop performance
- loop separation parameter
- loop shape
- loop structure
- loop transfer function
- loop transfer recovery
- looping reversal
- loopshaping methodology
- loose formation
- loose ground
- looseness
- loss
- loss exchange ratio
- loss factor
- loss in damping
- loss in frequency
- loss of orientation
- loss of tail-rotor effectiveness encounter
- loss of vision
- lot-by-lot competition
- louver
- louvre
- low damping
