On 9 October 2002, Northwest Airlines Flight 85 was cruising at 35,000 feet above the Bering Sea when the lower rudder suddenly deflected to the left. The pilots diverted the plane and made an emergency landing at Anchorage, Alaska. No one was hurt or killed in the incident. The cause was later attributed to a probable fatigue failure of the rudder hydraulic system. However, it has never been confirmed.
Type of aircraft: Boeing 747-400
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