helicopter modification

air combat capable helicopter / air-to-air capable helicopter

ambulance helicopter / medical evacuation (MEDEVAC) helicopter

medical evacuation (MEDEVAC) helicopter / ambulance helicopter

equipment modification

equipment modification list

retrofit modification kit

modification program

certification modification

approved modification of aircraft

authorized modification

modification

orbit modification

assault helicopter company / troop

assault support helicopter battalion

attack helicopter (atk hel)

attack helicopter troop

cargo helicopter

heavy-lift helicopter

helicopter / (розм.) heli / helo / chopper (H; hel)

helicopter amphibious assault ship

helicopter carrier

helicopter hoist

helicopter landing deck

helicopter operations

helicopter transportable

landing platform (helicopter)

military helicopter

shipborne helicopter

transport helicopter (trans hel)

utility helicopter

Sea King helicopter

helicopter refuelling area