What happened
On the morning of September 11, 2001, a Boeing 767 departed from Boston-Logan Airport at 0814LT. The aircraft was operating a scheduled commercial flight bound for Los Angeles, carrying a total of 56 passengers and nine crew members.
Shortly after takeoff, the aircraft was seized by terrorists who altered the intended flight path to fly over New York City. At 0903LT, the plane collided with the South Tower of the World Trade Center, impacting the structure between the 78th and 84th floors. The force of the collision caused the aircraft to disintegrate. All 65 occupants on board were killed during the impact. The structural damage from the crash eventually led to the collapse of the tower.
Findings
The investigation into this event falls under the jurisdiction of the Federal Bureau of Investigation (FBI). While the NTSB provided technical assistance for the inquiry, the agency did not establish a formal probable cause or release a public docket, as the incident was classified as a terrorist attack.