Helicopter Sikorsky HO5S-1 Serial 52-037 Register 128607 used by US Marine Corps USMC. Built 1952. Aircraft history and location Aircraft History 128607 US Marine Corps 1952-07-31Sikorsky S-52-3, c/n 52-037, ff:? acc BuAerRep (BAR) East Hartford, CT, 31Jul52 del USMC as HO5S-1, 128607, 05Aug52. 1956-07-24soc 24jul56 Send Updates Use APP to upload photo @ (optional) When Now? / / Send