Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1695 Register 150566 used by US Marine Corps USMC. Aircraft history and location Aircraft History 150566 US Marine Corps Sikorsky UH-34D, cn 58-1695, ff:? del USMC as UH-34D, 150566, unk status unk. Send Updates Use APP to upload photo @ (optional) When Now? / / Send