Helicopter Sikorsky HRS-3 Serial 55-423 Register 130256 used by US Marine Corps USMC. Built 1953. Aircraft history and location Aircraft History 130256 US Marine Corps 1953-04-23Sikorsky S-55 c/n 55-423, ff:? del USMC as HRS-3, 130256, 23Apr53. Send Updates Use APP to upload photo @ (optional) When Now? / / Send