Helicopter Sikorsky HRS-2 Serial 55-236 Register 130166 used by US Marine Corps USMC. Built 1952. Aircraft history and location Aircraft History 130166 US Marine Corps 1952-09-05Sikorsky S-55 c/n 55-236, ff:? del USMC as HRS-2, 130166, 05Sep52 1955-04-13 Sikorsky HRS-3 13apr55 1966-08-30 soc 30aug66 Pensacola Send Updates Use APP to upload photo @ (optional) When Now? / / Send