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Boeing 757 Hijacking and Pentagon Impact (N644AA)

Washington DC, United States of AmericaFlight

On September 11, 2001, a Boeing 757-200 (registration N644AA) operated by American Airlines was involved in an aviation accident near Washington DC, United States of America in flight. 64 people were killed. Investigators recorded the probable cause as: The Safety Board did not determine the probable cause and does not plan to issue a report or open a public docket. The terrorist attacks of September 11, 2001 are under the jurisdiction of the Federal Bureau of Investigation. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 9 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary report: the U.S. National Transportation Safety Board (NTSB) historical archiveUpdated 2026-09-03Data APIEditorial standards
Aircraft registered N644AA
Aircraft registered N644AA. Photo: Remi Dallot / CC BY-SA 2.5, via Wikimedia Commons

A Boeing 757 was hijacked shortly after departing Washington-Dulles for Los Angeles. It crashed into the Pentagon, killing all 64 occupants. The NTSB provided technical assistance to the FBI, which has jurisdiction over the incident.

Flight Details and Hijacking Event On September 11, 2001, a Boeing 757 departed Washington-Dulles Airport at 0810 local time on a scheduled service to Los Angeles. The aircraft was carrying 58 passengers and a crew of six. Shortly after takeoff, the flight was hijacked by terrorists who altered the flight path, directing the aircraft over Washington, D.C. At 0945 local time, the plane crashed into the southwest side of the Pentagon building. The aircraft disintegrated upon impact, resulting in the deaths of all 64 people on board. ## Investigation Jurisdiction The terrorist attacks of September 11, 2001, fall under the jurisdiction of the Federal Bureau of Investigation (FBI). The National Transportation Safety Board (NTSB) provided requested technical assistance to the FBI. All material generated by the NTSB in connection with this incident is under the control of the FBI. The NTSB does not plan to issue a formal report or open a public docket for this event.

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Frequently asked questions

What happened in the 11 Sept 2001 Boeing 757-200 accident near Washington DC, United States of America?

A Boeing 757 was hijacked shortly after departing Washington-Dulles for Los Angeles. It crashed into the Pentagon, killing all 64 occupants. The NTSB provided technical assistance to the FBI, which has jurisdiction over the incident.

Were there any fatalities in the 11 Sept 2001 Boeing 757-200 accident?

The accident was fatal, resulting in 64 fatalities.

What aircraft was involved and where did it happen?

The accident on 11 Sept 2001 involved a Boeing 757-200, registration N644AA, operated by American Airlines, at Washington DC, United States of America.

What was the probable cause of the accident?

The Safety Board did not determine the probable cause and does not plan to issue a report or open a public docket. The terrorist attacks of September 11, 2001 are under the jurisdiction of the Federal Bureau of Investigation. The Safety Board provided requested technical assistance to the FBI, and any material…

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