Helicopter Sikorsky H-34A Choctaw Serial 58-1025 Register 57-1767 used by US Army Aviation Army. Aircraft history and location Aircraft History 57-1767 US Army Aviation del US ARMY as H-34A, 57-1767, unk to MASDC as XJ0055 Mar 22, 1972. To civil registry as N91206. Send Updates Use APP to upload photo @ (optional) When Now? / / Send