Helicopter Sikorsky H-19C Chickasaw Serial 55-226 Register 51-14273 used by US Army Aviation Army. Built 1952. Aircraft history and location Aircraft History 51-14273 US Army Aviation 1952-10-17Sikorsky S-55 c/n 55-226, ff:? del as H-19C, 51-14273, 17Oct52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send