Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1031 Register 145800 used by US Marine Corps USMC. Aircraft history and location Aircraft History 145800 US Marine Corps 1962-10Sikorsky HUS-1, cn 58-1031, ff:? del USMC as HUS-1, 145800, unk redesig UH-34D, Oct62 w/o 11Sep66. Send Updates Use APP to upload photo @ (optional) When Now? / / Send