Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1684 Register 150557 used by US Marine Corps USMC. Aircraft history and location Aircraft History 150557 US Marine Corps Sikorsky UH-34D, cn 58-1684, ff:? del USMC as UH-34D, 150557, unk wfu & xfer US register as N4217I, unk. 1963-09-11 11sep63 HMM-263 MCAS New River, NC 15mar65 HMM-264, MCAS New River, NC 21dec65 NARF Jacksonville, FL Send Updates Use APP to upload photo @ (optional) When Now? / / Send