Helicopter Sikorsky H-19D Chickasaw Serial 55-1187 Register 57-1626 used by US Army Aviation Army. Built 1958. Aircraft history and location Aircraft History 57-1626 US Army Aviation 1958-03-28Sikorsky S-55 c/n 55-1187, ff:? del US Army as H-19D, 57-1626, 28Mar58. Send Updates Use APP to upload photo @ (optional) When Now? / / Send