Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-917 Register 145774 used by US Marine Corps USMC. Aircraft history and location Aircraft History 145774 US Marine Corps 1962-10Sikorsky HUS-1, cn 58-917, ff:? del USMC as HUS-1, 145774, unk redesig UH-34D, Oct62 w/o Southeast Asia, 18Sep65. Send Updates Use APP to upload photo @ (optional) When Now? / / Send