низька хмарність (більша за 5 -8 октантів)
operational ceiling (service ceiling)
static ceiling (the highest altitude at which the helicopter is capable of hovering in standard atmosphere) / hover ceiling
low-RCS target / low-radar-cross-section target
low flying aircraft / low-flying aircraft
low-flying, low-speed drone
absolute ceiling (AC)
ceiling (aeronautics)
service ceiling
ceiling lining
ceiling
ceiling altitude
zero ceiling
hover ceiling
static ceiling
minimum ceiling
operating ceiling
unlimited ceiling
smoke ceiling
ceiling in rank
ceiling height
manpower ceiling
personnel ceiling
maximum ceiling
anti-low-flying aircraft missile
blasting explosive (normal-, high-, low strength)
high altitude-low opening (HALO)
high- and low-altitude surveillance
high-altitude low-opening parachute technique (HALO)
law of war (LOW)
lie low
low
low altitude parachute extraction system (LAPES)