Helicopter Sikorsky HR2S-1 Serial 56-011 Register 140315 used by US Marine Corps USMC. Built 1957. Aircraft history and location Aircraft History 140315 US Marine Corps 1957-01-17Sikorsky S-56, c/n 56-011, ff:? del US Marine Corps as HR2S-1, 140315, 17Jan57 soc & scr unk. 1964-02-28 soc 28feb64 Send Updates Use APP to upload photo @ (optional) When Now? / / Send