Helicopter Sikorsky CH-53D Sea Stallion Serial 65-175 Register 156671 used by US Marine Corps USMC. Aircraft history and location Aircraft History 156671 US Marine Corps Sikorsky S-65C, c/n 65-175, ff:? del USMC as CH-53D 156671, unk Send Updates Use APP to upload photo @ (optional) When Now? / / Send