Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1416 Register 149321 used by US Marine Corps USMC. Aircraft history and location Aircraft History 149321 US Marine Corps 1962-10Sikorsky HUS-1, cn 58-1416, ff:? del USMC as HUS-1, 149321, unk redesig UH-34D, Oct62 status unknown. Send Updates Use APP to upload photo @ (optional) When Now? / / Send