Helicopter Sikorsky HRS-1 Serial 55-052 Register 127816 used by US Marine Corps USMC. Built 1951. Aircraft history and location Aircraft History 127816 US Marine Corps 1951-08-16Sikorsky S-55 c/n 55-052, ff:? del USMC as HRS-1, 127816, 16Aug51 1957-04-10 soc 10apr57 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
