Helicopter Sikorsky H-19C Chickasaw Serial 55-246 Register 51-14281 used by US Army Aviation Army. Built 1952. Aircraft history and location Aircraft History 51-14281 US Army Aviation 1952-10-30Sikorsky S-55 c/n 55-246, ff:? del as H-19C, 51-14281, 30Oct52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send