Helicopter Sikorsky HRS-2 Serial 55-253 Register 130170 used by US Marine Corps USMC. Built 1952. Aircraft history and location Aircraft History 130170 US Marine Corps 1952-10-08Sikorsky S-55 c/n 55-253, ff:? del USMC as HRS-2, 130170, 08Oct52 Sikorsky HRS-3 03nov55 1953-08-26 soc 26aug53 Ream Fld Send Updates Use APP to upload photo @ (optional) When Now? / / Send