Helicopter Sikorsky HRS-2 Serial 55-181 Register 130138 used by US Marine Corps USMC. Built 1952. Aircraft history and location Aircraft History 130138 US Marine Corps 1952-07-21Sikorsky S-55 c/n 55-181, ff:? del USMC as HRS-2, 130138, 21Jul52 1955-03-31 Sikorsky HRS-3 31mar55 1967-09-28 soc 28sep67 San Diego Send Updates Use APP to upload photo @ (optional) When Now? / / Send