вихідний рівень висоти; нуль висоти
datum plane
vertical datum note
plane of rotation / tip path plane
plane-to-plane communication
tip path plane / plane of rotation
vertical plane
blade flapping (the vertical movement in its plane of rotation because of differences in lift between the advancing and retreating blades)
instantaneous vertical speed indicator / instantaneous vertical-speed indicator (IVSI)
data (мн. від datum)
datum dan buoy
horizontal datum
horizontal datum note
correction obtained by datum point ranging
datum point on ground
sidereal datum
major datum point
datum time
datum
datum point
attack plane
diving plane
float-type plane
ground plane antenna
lifting plane (lifting surface area)
pilotless reconnaissance plane
plane survey
plane table
spotter plane
doomsday plane / doomsday aircraft
adaptive focal plane array
ditch a plane
focal-plane array sensor