American Airlines Flight 191 was a regularly scheduled passenger flight from O'Hare International Airport in Chicago, Illinois, to Los Angeles International Airport. On May 25, 1979, the McDonnell Douglas DC-10-10 operating the flight crashed moments after takeoff from Chicago. All 258 passengers and 13 crew on board were killed, along with two people on the ground. Until the September 11 attacks, it was the deadliest air disaster in the history of the United States. It remains the deadliest aviation accident to occur on U.S. soil, as well as the second deadliest involving a DC-10, after Turkish Airlines Flight 981. When it occurred, it was also the third worst aviation disaster in history, and is currently the tenth worst.