Helicopter Sikorsky HO4S-3 Serial 55-529 Register 138500 used by US Navy USN. Built 1953. Aircraft history and location Aircraft History 138500 US Navy 1953-09-23Sikorsky S-55 c/n 55-529, ff:? del USN as HO4S-3, 138500, 23Sep53. to DM as 2H030 291065 preserved Kirtland 1955-05-11 w/o 11may55 Send Updates Use APP to upload photo @ (optional) When Now? / / Send
