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NTSB Probes Two 737 Rudder Incidents
U.S. investigators are examining critical rudder control units from two 737s to determine whether they suffered failures in the last 2 weeks similar to those that are suspected of causing fatal 737 crashes in 1991 and 1994.
Both units were of a new design developed by Boeing, Parker Hannifin and the FAA specifically to prevent the type of failure suspected in the March 1991 crash of a United Airlines 737-200 near Colorado Springs and the September 1994 crash of a USAir 737-300 near Pittsburgh.