Helicopter Sikorsky H-19C Chickasaw Serial 55-266 Register 51-14288 used by US Army Aviation Army. Built 1952. Aircraft history and location Aircraft History 51-14288 US Army Aviation 1952-11-05Sikorsky S-55 c/n 55-266, ff:? del as H-19C, 51-14288, 05Nov52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send