Helicopter Sikorsky H-19D Chickasaw Serial 55-983 Register 55-3227 used by US Army Aviation Army. Built 1956. Aircraft history and location Aircraft History 55-3227 US Army Aviation 1956-07-27Sikorsky S-55 c/n 55-983, ff:? del US Army as H-19D, 55-3227, 27Jul56. Send Updates Use APP to upload photo @ (optional) When Now? / / Send