Northwest Airlines Flight 85: Navigating a Rudder Hardover Event Over the Bering Sea
Northwest Airlines Flight 85 departed on October 9, 2002, from Detroit Metropolitan Wayne County Airport in the United States for Narita International Airport in Japan. What would otherwise have been a routine international passenger flight turned into hell as Boeing 747-400 had a lower rudder hard over over open waters of the Bering Sea. The Flight's Unforeseen Ordeal When cruising over the unfriendly and hostile Bering Sea that lay between Russia and North America, the crew found themselves with an unexpected and serious issue with their life. A lower rudder hardover occurred to the aircraft, where the aircraft rudder deflected to its travel limit without any crew input. The hard and sudden deflection of the rudder compromised the aircraft stability and control. In the Blink of an Eye: Full Left Lower Rudder In the second, the Boeing 747-400 experienced a full left lower deflection of the rudder—a flight condition in which the rudder was rotated to its maximum left position. Suc...