Helicopter Sikorsky HSS-1 / SH-34G Seabat Serial 58-746 Register 143950 used by US Navy USN. Built 1957. Aircraft history and location Aircraft History 143950 US Navy 1957-12-30 Sikorsky HSS-1N / SH-34J Seabat Sikorsky HSS-1, cn 58-746, ff:? del USN as HSS-1, 143950, 30Dec57 to HSS-1N (ASC 84), unk soc as UH-34J, NAF Sigonella, 11May73. Send Updates Use APP to upload photo @ (optional) When Now? / / Send