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9/11: Plane crashes into the South Tower of the Trade Center

1 September 2011 Last updated at 12:45 BST

At 0903 Eastern Daylight Time on 11 September 2001, United Airlines Flight 175 crashed into the south tower of the World Trade Center.

The plane had left Boston for Los Angeles carrying 65 passengers and crew.

9/11 timeline: The story of the day