Helicopter Sikorsky HSS-2 Sea King Serial 61-235 Register 151531 used by US Navy USN. Aircraft history and location Aircraft History 151531 US Navy 1972-12-26 Sikorsky HH-3A Big Mother USN conv HH-3A w/o 26dec72 1985 North Island training airframe Hit mountain. 5 onboard and all survived w/1 minor injury Send Updates Use APP to upload photo @ (optional) When Now? / / Send