Helicopter Sikorsky H-19A Chickasaw Serial 55-156 Register 51-3885 used by US Air Force USAF. Built 1952. Aircraft history and location Aircraft History 51-3885 US Air Force 1952-06-04Sikorsky S-55 c/n 55-156, ff:? del USAF as H-19A, 51-3885, 04Jun52. 1953-12-30 w/o 30dec53 in Korea Send Updates Use APP to upload photo @ (optional) When Now? / / Send