Helicopter Sikorsky H-19C Chickasaw Serial 55-221 Register 51-14268 used by US Army Aviation Army. Built 1952. Aircraft history and location Aircraft History 51-14268 US Army Aviation 1952-10-03Sikorsky S-55 c/n 55-221, ff:? del as H-19C, 51-14268, 03Oct52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send