Helicopter Sikorsky HO5S-1 Serial 52-034 Register 128604 used by US Marine Corps USMC. Built 1952. Aircraft history and location Aircraft History 128604 US Marine Corps 1952-07-24Sikorsky S-52-3, c/n 52-034, ff:? acc BuAerRep (BAR) East Hartford, CT, 24Jul52 del USMC as HO5S-1, 128604, 31Jul52. 1956-07-24soc 24jul56 Send Updates Use APP to upload photo @ (optional) When Now? / / Send