Helicopter Sikorsky HO4S-1 Serial 55-013 Register N9756Z 125513 used by US Navy USN. Built 1951. Aircraft history and location Aircraft History 125513 US Navy 1951-01-31Sikorsky S-55 c/n 55-013, ff:? acc BuAerRep (BAR) East Hartford, CT, 31Jan51 del USN as HO4S-1, 125513, 02Feb51. N9756Z - ex 125513 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
