USAir Flight 427 : Three years later on September 8 , 1994 another Boeing 737 spun out of control and crashed , the Boeing 737-3B7 flying the route which was registered N513AU , was approaching runway 28R of Pittsburgh International Airport , located in Findlay Township , Pennsylvania . The aircraft suddenly banked violently to the left , rolled upside down , then went into a downward spiral while rolling left . The jet then crashed near the airport ; the crash killed all 127 passengers and 5 crew . The bodies of the occupants were so severely fragmented that the crash site was initially declared a biohazard by the NTSB . Both crashes were traced to a malfunction in the planes ' rudder controls
USAir Flight 427
USAir Flight 427
Loss of control (aeronautics)