On June 1, 1999, at 2350:44 central daylight time, American Airlines flight 1420, a McDonnell Douglas DC-9-82, crashed after it overran the end of runway 4R during landing at Little Rock National Airport in Little Rock, Arkansas. The flight originated from Dallas/Fort Worth International Airport, Texas. There were 145 persons on board. The airplane was destroyed by impact forces and a postcrash fire. The captain and 10 passengers were killed; 120 crewmembers and passengers received serious or minor injuries; and 24 passengers were not injured. The National Transportation Safety Board determines that the probable causes were the flight crew's failure to discontinue the approach when severe thunderstorms.