Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1555 Register 150216 used by US Marine Corps USMC. Aircraft history and location Aircraft History 150216 US Marine Corps 1962-10Sikorsky HUS-1, cn 58-1555, ff:? del USMC as HUS-1, 150216, unk redesig UH-34D, Oct62 xfer US register as N4217Q. Send Updates Use APP to upload photo @ (optional) When Now? / / Send