ешелон, ешелон польоту; висота ешелону польоту
depot maintenance (beyond O and I level activities, performed in an industrial-type facility) / D-level maintenance
surveyor's level (surveying level, tbc)
assigned flight level
level flight
level flight noise requirements
level flight time (LFT)
low-level flight
maximum speed of level flight
minimum speed of level flight
minimum usable flight level
level-flight envelope
in-flight level calibration
flight restriction zone / flight restricted zone (FRZ)
alert level
barrel bore wear level
base level assessment
counter IED operational / strategic level
cross-level
division level
division-corps-joint-command level
gun’s axis inclination level
High Level Planning Group (OSCE HLPG)
High Level Steering Group
high-level strategic guidance
intelligence staff officer (brigade, battalion & armored cavalry units level) (S2)
laser level
level of ambition (LoA)
level of command
level of war
level point
level readiness
level to / with the ground