Helicopter Sikorsky HR2S-1 Serial 56-081 Register 145856 used by US Marine Corps USMC. Built 1958. Aircraft history and location Aircraft History 145856 US Marine Corps 1958-04-10Sikorsky S-56, c/n 56-081, ff:? del USMC as HR2S-1, 145856, 10Apr58 wfu & soc unk. Send Updates Use APP to upload photo @ (optional) When Now? / / Send
