Helicopter Sikorsky H-19C Chickasaw Serial 55-193 Register 51-14252 used by US Army Aviation Army. Built 1952. Aircraft history and location Aircraft History 51-14252 US Army Aviation 1952-08-11Sikorsky S-55 c/n 55-193, ff:? del as H-19C, 51-14252, 11Aug52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send