Helicopter Sikorsky HSS-1N / SH-34J Seabat Serial 58-1231 Register 147991 used by US Navy USN. Aircraft history and location Aircraft History 147991 US Navy 1962-10Sikorsky HSS-1N, c/n 58-1231, ff? del USN as HSS-1N, 147991 unk redesig SH-34J Oct62 Send Updates Use APP to upload photo @ (optional) When Now? / / Send