Helicopter Sikorsky HRS-3 Serial 55-345 Register 130217 used by US Marine Corps USMC. Built 1953. Aircraft history and location Aircraft History 130217 US Marine Corps 1953-02-25Sikorsky S-55 c/n 55-345, ff:? del USMC as HRS-3, 130217, 25Feb53 Send Updates Use APP to upload photo @ (optional) When Now? / / Send