Helicopter Sikorsky H-34A Choctaw Serial 58-672 Register 56-4304 used by US Army Aviation Army. Built 1957. Aircraft history and location Aircraft History 56-4304 US Army Aviation 1957-09-13del US ARMY as H-34A, 56-4304, 13Sep57 soc D Troop, 3rd Squad, 12th Cavalry, Jan64. Send Updates Use APP to upload photo @ (optional) When Now? / / Send