Helicopter Sikorsky H-19D Chickasaw Serial 55-817 Register 54-1413 used by US Army Aviation Army. Built 1954. Aircraft history and location Aircraft History 54-1413 US Army Aviation 1954-12-06Sikorsky S-55 c/n 55-817, ff:? del US Army as H-19D, 54-1413, 06Dec54. Send Updates Use APP to upload photo @ (optional) When Now? / / Send