Helicopter Sikorsky H-19C Chickasaw Serial 55-303 Register 51-14309 used by US Army Aviation Army. Built 1952. Aircraft history and location Aircraft History 51-14309 US Army Aviation 1952-12-30Sikorsky S-55 c/n 55-303, ff:? del as H-19C, 51-14309, 30Dec52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send