Helicopter Sikorsky HO4S-3 Serial 55-528 Register 138499 used by US Navy USN. Built 1953. Aircraft history and location Aircraft History 138499 US Navy 1953-09-04Sikorsky S-55 c/n 55-528, ff:? del USN as HO4S-3, 138499, 04Sep53. wfu DM as 2H030 291065 preserved Kirtland Send Updates Use APP to upload photo @ (optional) When Now? / / Send
