Helicopter Sikorsky HO4S-1 Serial 55-014 Register 125514 used by US Navy USN. Built 1951. Aircraft history and location Aircraft History 125514 US Navy 1951-01-31Sikorsky S-55 c/n 55-014, ff:? acc BuAerRep (BAR) East Hartford, CT, 31Jan51 del USN as HO4S-1, 125514, 23Feb51. w/o 8aug51 Send Updates Use APP to upload photo @ (optional) When Now? / / Send