Helicopter Sikorsky HO4S-1 Serial 55-011 Register 125511 used by US Navy USN. Built 1950. Aircraft history and location Aircraft History 125511 US Navy 1950-12-29Sikorsky S-55 c/n 55-011, ff:? acc BuAerRep (BAR) East Hartford, CT, 29Dec50 del USN as HO4S-1, 125511, 02Feb51 1957-09-24soc 24sep57 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
