Helicopter Sikorsky H-19D Chickasaw Serial 55-832 Register 54-1418 used by US Army Aviation Army. Built 1955. Aircraft history and location Aircraft History 54-1418 US Army Aviation 1955-01-24Sikorsky S-55 c/n 55-832, ff:? del US Army as H-19D, 54-1418, 24Jan55. Send Updates Use APP to upload photo @ (optional) When Now? / / Send