Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1660 Register 150258 used by US Marine Corps USMC. Aircraft history and location Aircraft History 150258 US Marine Corps 1968-07-16Sikorsky UH-34D, cn 58-1660, ff:? del USMC as UH-34D, 150258, unk w/o Phu Bai, RVN, 16Jul68. Send Updates Use APP to upload photo @ (optional) When Now? / / Send