Helicopter Sikorsky H-19C Chickasaw Serial 55-240 Register 51-14275 used by US Army Aviation Army. Built 1952. Aircraft history and location Aircraft History 51-14275 US Army Aviation 1952-10-22Sikorsky S-55 c/n 55-240, ff:? del as H-19C, 51-14275, 22Oct52. preserved Ft Eustis Send Updates Use APP to upload photo @ (optional) When Now? / / Send