Helicopter Sikorsky H-19C Chickasaw Serial 55-268 Register 51-14290 used by US Army Aviation Army. Built 1952. Aircraft history and location Aircraft History 51-14290 US Army Aviation 1952-11-06Sikorsky S-55 c/n 55-268, ff:? del as H-19C, 51-14290, 06Nov52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send