Helicopter Sikorsky H-19B Chickasaw Serial 55-751 Register 53-4415 used by US Air Force USAF. Built 1954. Aircraft history and location Aircraft History 53-4415 US Air Force 1954-07-30Sikorsky S-55 c/n 55-751, ff:? del USAF as H-19B, 53-4415, 30Jul54. Send Updates Use APP to upload photo @ (optional) When Now? / / Send
