Helicopter Sikorsky H-19C Chickasaw Serial 55-276 Register 51-14297 used by US Army Aviation Army. Built 1952. Aircraft history and location Aircraft History 51-14297 US Army Aviation 1952-12-08Sikorsky S-55 c/n 55-276, ff:? del as H-19C, 51-14297, 08Dec52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send