Helicopter Sikorsky HSS-1 / SH-34G Seabat Serial 58-477 Register 143871 used by US Navy USN. Built 1957. Aircraft history and location Aircraft History 143871 US Navy 1957-03-09 Sikorsky HSS-1N / SH-34J Seabat Sikorsky HSS-1, c/n 58-477, ff? del US Navy as HSS-1 143871, 09Mar57 to HSS-1N (ASC 84), unk. Send Updates Use APP to upload photo @ (optional) When Now? / / Send