Helicopter Sikorsky HR2S-1 Serial 56-110 Register 145870 used by US Marine Corps USMC. Built 1959. Aircraft history and location Aircraft History 145870 US Marine Corps 1959-01-07Sikorsky S-56, c/n 56-110, ff:? del USMC as HR2S-1, 145870, 07Jan59 wfu & soc unk. 1968-04-30soc 30apr68 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
