C-23 SherpaC 23 Sherpa Army airplane model. The C 23B Sherpa aircraft is a light military transport aircraft, designed to operate efficiently, even under the most arduous conditions, in a wide range of mission configurations. The large square section hold, with excellent access at both ends, offers ready flexibility to perform ordnance movement, troop &, vehicle transport, airborne airdrop missions, medical evacuation and is suitable for conversion to other