Helicopter Sikorsky HRS-1 Serial 55-035 Register 127800 used by US Marine Corps USMC. Built 1951. Aircraft history and location Aircraft History 127800 US Marine Corps 1951-06-02Sikorsky S-55 c/n 55-035, ff:? del USMC as HRS-1, 127800, 02Jun51 1957-07-06 soc 06jul57 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
