Helicopter Sikorsky HSS-1 / SH-34G Seabat Serial 58-590 Register 143893 used by US Navy USN. Built 1957. Aircraft history and location Aircraft History 143893 US Navy 1957-08-01 Sikorsky HSS-1N / SH-34J Seabat Sikorsky HSS-1, c/n 58-590, ff? del USN as 143893, 01Aug57 to HSS-1N (ASC 84), unk status unk. Send Updates Use APP to upload photo @ (optional) When Now? / / Send