Helicopter Sikorsky H-19B Chickasaw Serial 55-590 Register 52-7514 used by US Air Force USAF. Built 1953. Aircraft history and location Aircraft History 52-7514 US Air Force 1953-11-26Sikorsky S-55 c/n 55-590, ff:? del USAF as H-19B, 52-7514, 26Nov53. Send Updates Use APP to upload photo @ (optional) When Now? / / Send