відсутність відповіді (напр. на певній радіочастоті)
negative contact
negative enemy contact
negative contact (in cloud)
contact, to obtain contact
infrared / negative ultraviolet (IR/NUV) seeking
negative electrical charge
negative report
battery negative post
negative dihedral
negative dihedral effect
negative dihedral situation
negative dihedral wing
negative source
negative stability
negative vertical acceleration
negative
negative sensor
air contact
contact
contact along the front
contact area
contact burst
contact countries
contact detachment
contact flight
contact line
contact mine
contact point
contact shot
contact with the enemy
contact zone
contact-free war