Helicopter Sikorsky H-19B Chickasaw Serial 55-346 Register 51-3906 used by US Air Force USAF. Built 1953. Aircraft history and location Aircraft History 51-3906 US Air Force 1953-03-16Sikorsky S-55 c/n 55-346, ff:? del USAF as H-19B, 51-3906, 16Mar53. Send Updates Use APP to upload photo @ (optional) When Now? / / Send
