Engine (TEI)
Transmission, rotor, gearboxes, drive shaft, rotor blades (TAI, ALP Aviation, TAI-KORDSA)
Tail boom, fins and skids, crowlings (TAI)
Structurals, Cockpit, Cabin, Fuel Tanks, Fuselage (TAI)
Landing gears (TAAC in near?)
Flight systems (TAI)
Cockpit interfaces, control surfaces...