Helicopter Sikorsky H-19A Chickasaw Serial 55-169 Register N109D 51-3890 used by US Air Force USAF. Built 1952. Aircraft history and location Aircraft History 51-3890 US Air Force 1952-06-24Sikorsky S-55 c/n 55-169, ff:? del USAF as H-19A, 51-3890, 24Jun52. N109D - ex 51-3890 Send Updates Use APP to upload photo @ (optional) When Now? / / Send