Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-518 Register 144631 used by US Marine Corps USMC. Built 1957. Aircraft history and location Aircraft History 144631 US Marine Corps 1957-04-10Sikorsky HUS-1 cn 58-518, ff:? del USMC as HUS-1, 144631, 10Apr57 redesig UH-34D, Oct62 soc NARF Pensacola, 14Aug72. Send Updates Use APP to upload photo @ (optional) When Now? / / Send