Court papers provide evidence of negligence in 9/11 lawsuit , attorney says . Comment: Mark Bavis , a hockey scout aboard United Airlines Flight 175 , died when his flight crashed into the World Trade Center 's south tower . Mark Bavis died when his flight crashed into the World Trade Center 's south tower .
Court papers provide evidence of negligence in 9/11 lawsuit , attorney says . Comment: Mark Bavis died when his flight crashed into the World Trade Center 's south tower .