Helicopter Sikorsky HSS-1 / SH-34G Seabat Serial 58-164 Register 138473 used by US Navy USN. Built 1955. Aircraft history and location Aircraft History 138473 US Navy 1955-12-06Sikorsky HSS-1, c/n 58-164, ff? del US Navy as HSS-1 138473, 06Dec55 w/o HS-2, abd USS Philippine Sea [CVS-47], 27Feb57. Send Updates Use APP to upload photo @ (optional) When Now? / / Send