Helicopter Sikorsky CH-53D Sea Stallion Serial 65-213 Register 156966 used by US Marine Corps USMC. Aircraft history and location Aircraft History 156966 US Marine Corps Sikorsky S-65C, c/n 65-213, ff:? del USMC as CH-53D 156966, unk 1979-12-15w/o 15dec79 with HMT-204 HMT-204 Send Updates Use APP to upload photo @ (optional) When Now? / / Send