List of accidents and incidents involving commercial aircraft 1990 – 2021
United Airlines Flight 175, a Boeing 767-200 with 65 people on board, is hijacked after taking off from Boston and is flown into the south tower of the World Trade Center in New York City; all on board are killed as well as others on the ground and in the building; the collapse of both towers brings the total death toll from the two crashes to at least 2,759, the worst disaster involving commercial aircraft.