Helicopter Sikorsky CH-53D Sea Stallion Serial 65-161 Register 156657 used by US Marine Corps USMC. Aircraft history and location Aircraft History 156657 US Marine Corps Sikorsky S-65C, c/n 65-161, ff:? del USMC as CH-53D 156657, unk Send Updates Use APP to upload photo @ (optional) When Now? / / Send