Helicopter Sikorsky H-19A Chickasaw Serial 55-092 Register 51-3854 used by US Air Force USAF. Built 1952. Aircraft history and location Aircraft History 51-3854 US Air Force 1952-01-25Sikorsky S-55 c/n 55-092, ff:? del USAF as H-19A, 51-3854, 25Jan52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send