Helicopter Sikorsky HO5S-1 Serial 52-042 Register 128612 used by US Marine Corps USMC. Built 1952. Aircraft history and location Aircraft History 128612 US Marine Corps 1952-08-22Sikorsky S-52-3, c/n 52-042, ff:? acc BuAerRep (BAR) East Hartford, CT, 22Aug52 del USMC as HO5S-1, 128612, 26Aug52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send