Helicopter Sikorsky HRS-1 Serial 55-055 Register 127819 used by US Marine Corps USMC. Built 1951. Aircraft history and location Aircraft History 127819 US Marine Corps 1951-09-05Sikorsky S-55 c/n 55-055, ff:? del USMC as HRS-1, 127819, 05Sep51 1957-02-28 soc 28feb57 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
