Helicopter Sikorsky H-19D Chickasaw Serial 55-819 Register 54-1415 used by US Army Aviation Army. Built 1954. Aircraft history and location Aircraft History 54-1415 US Army Aviation 1954-12-05Sikorsky S-55 c/n 55-819, ff:? del US Army as H-19D, 54-1415, 05Dec54. Send Updates Use APP to upload photo @ (optional) When Now? / / Send