Helicopter Sikorsky HR2S-1 Serial 56-100 Register 145865 used by US Marine Corps USMC. Built 1958. Aircraft history and location Aircraft History 145865 US Marine Corps 1958-09-08Sikorsky S-56, c/n 56-100, ff:? del USMC as HR2S-1, 145865, 08Sep58 wfu & soc unk. 1968-05-20soc 20may68 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
