Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1698 Register 150569 used by US Marine Corps USMC. Aircraft history and location Aircraft History 150569 US Marine Corps 1965-03-16Sikorsky UH-34D, cn 58-1698, ff:? del USMC as UH-34D, 150569, unk w/o Southeast Asia, 16Mar65. Send Updates Use APP to upload photo @ (optional) When Now? / / Send