Timeline: (From the 9/11 Commission Report)
Four flights: Two from Boston, one from Newark and one from Dulles, Washington, DC.
American Airlines 11 Boston to L.A. Left 7:59 AM. Crashed into WTC.1, the North Tower at 8:46 AM between the 93rd and 99th floors.
United Airlines 175 Boston – L.A. Departed 8:00 AM Crashed into WTC.2, the South Tower at 9:03 AM between the 77th and 85th floors.
American Airlines 77 Dulles – L.A. Departed 8:10 AM crashed into the Pentagon at 9:37 AM
United Airlines 93 Newark to San Francisco Departed 8:10 AM Crashed into Shanksville at 10:02. Was headed for The White House.
At 9:58 the South Tower collapsed. It stood for 55 minutes after the crash. It collapsed in ten seconds. There were more floors above the crash site in the South Tower so there was more weight above the South Tower crash floors. The weakened structure could not support the weight above it.
At 10:02 the North Tower collapsed. It stood for 1 hour 42 minutes after the crash. From 8:46 AM when the first plane hit until 10:28 when the North Tower collapsed, took 1 hour 42 minutes.
The buildings normally had 40,000 people in them and another 50,000 passed thru the complex everyday. On 9/11 2,973 people died. That included 343 FDNY, 37 Port Authority, and 23 NYPD. That’s 2,570 plus the 403 first responders.