Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1650 Register 150254 used by US Marine Corps USMC. Aircraft history and location Aircraft History 150254 US Marine Corps Sikorsky UH-34D, cn 58-1650, ff:? del USMC as UH-34D, 150254, unk lost at sea, unk. Send Updates Use APP to upload photo @ (optional) When Now? / / Send