Helicopter Sikorsky H-19D Chickasaw Serial 55-915 Register 55-3189 used by US Army Aviation Army. Built 1955. Aircraft history and location Aircraft History 55-3189 US Army Aviation 1955-12-13Sikorsky S-55 c/n 55-915, ff:? del US Army as H-19D, 55-3189, 13Dec55. Send Updates Use APP to upload photo @ (optional) When Now? / / Send