Helicopter Sikorsky HRS-1 Serial 55-067 Register 127829 used by US Marine Corps USMC. Built 1951. Aircraft history and location Aircraft History 127829 US Marine Corps 1951-09-26Sikorsky S-55 c/n 55-067, ff:? del USMC as HRS-1, 127829, 26Sep51 w/o 1951 within 15 days after del. 1951-10-17w/o 17oct51 Send Updates Use APP to upload photo @ (optional) When Now? / / Send