Helicopter Sikorsky H-19A Chickasaw Serial 55-093 Register N107DA 51-3855 used by US Air Force USAF. Built 1952. Aircraft history and location Aircraft History 51-3855 US Air Force 1952-08-07Sikorsky S-55 c/n 55-093, ff:? del USAF as H-19A, 51-3855, 07Aug52. N107DA - ex 51-3855 Send Updates Use APP to upload photo @ (optional) When Now? / / Send