"This pilot's inadequate knowledge of his aircraft was compounded by his fatigue," said Hart. "As a result, five people died who did not have to. Just as pilots should not take off without enough fuel, they should not operate an aircraft without enough rest." The captain failed to adhere to the airplane's flight manual procedures for anti-skid failure in flight and did not retract the lift dump -- a critical system to assist in stopping the aircraft -- immediately after making the decision to perform a go-around, according to the NTSB. According to the checklist for an anti-skid system failure, the flap configurations available for the pilot were flaps up or flaps 10. Either of these configurations would have required a longer landing distance than the runway provided. As a result, the pilot should have sought landing at an alternate airport, the NTSB said.
Investigators found the aircraft had extended flaps 30 on the approach, which is prohibited by the anti-skid failure procedures. At the time of impact, the flaps were transitioning through flaps 15. Additionally, while both the airplane's flight manual and a placard in the cockpit warned against extending the lift dump in flight, the go-around was attempted with the lift dump deployed, making a safe climb unlikely. The full report is posted online.