Helicopter Sikorsky HO5S-1 Serial 52-049 Register 128619 used by US Marine Corps USMC. Built 1952. Aircraft history and location Aircraft History 128619 US Marine Corps 1952-08-29Sikorsky S-52-3, c/n 52-049, ff:? acc BuAerRep (BAR) East Hartford, CT, 29Aug52 del USMC as HO5S-1, 128619, 05Sep52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send