Korean Air Flight 801

A Boeing 747-3B5, Korean Air Flight 801, crashed on August 6, 1997, on approach to the international airport in the United States territory of Guam, killing 228 of the 254 people aboard. Contributing factors in the crash were fatigue and errors by the flight crew, inadequate flight crew training, and a modification of the airport's altitude warning system that prevented it from detecting aircraft below a minimum safe altitude.