artillery observation plane
літак-коректувальник артилерійського вогню
літак-коректувальник артилерійського вогню
plane of rotation / tip path plane
tip path plane / plane of rotation
observation point / observation post (OP)
forward observer (FO), forward observation officer; (artillery) observer / spotter
forward artillery observation point
anti-aircraft artillery observation aircraft
artillery forward observation officer
artillery group observation post
artillery groupment observation post