sentences:  The first officer was 39-year-old Donald E. Goodin, who had been with FedEx since 1994, having served as a former U.S. Air Force pilot and had 3,703 flight hours, though only 592 of them were with FedEx.Goodin only had 92 hours on the MD-11.The National Transportation Safety Board (NTSB) conducted a full investigation of the accident and concluded that the probable cause was the captain's over-control of the aircraft during the landing and his failure to go around after a destabilized flare.