Helicopter Sikorsky HRS-1 Serial 55-041 Register 127806 used by US Marine Corps USMC. Built 1951. Aircraft history and location Aircraft History 127806 US Marine Corps 1951-07-03Sikorsky S-55 c/n 55-041, ff:? del USMC as HRS-1, 127806, 03Jul51 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
