Helicopter Sikorsky HR2S-1 Serial 56-059 Register 141611 used by US Marine Corps USMC. Built 1958. Aircraft history and location Aircraft History 141611 US Marine Corps 1958-02-12Sikorsky S-56, c/n 56-059, ff:? del USMC as HR2S-1, 141611, 12Feb58 w/o unk. w/o 9dec58 Send Updates Use APP to upload photo @ (optional) When Now? / / Send