Helicopter Sikorsky H-19D Chickasaw Serial 55-934 Register 55-3200 used by US Army Aviation Army. Built 1956. Aircraft history and location Aircraft History 55-3200 US Army Aviation 1956-02-29Sikorsky S-55 c/n 55-934, ff:? del US Army as H-19D, 55-3200, 29Feb56. Send Updates Use APP to upload photo @ (optional) When Now? / / Send