# NTSB DCA01MA065: Boeing 757, N591UA, Shanksville, PA, September 11, 2001

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Major investigation · Final report
- Date: September 11, 2001
- Place: Shanksville, PA
- Coordinates: 40.019229, -78.909393 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.0192&lon=-78.9094&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 44 fatal
- Status: Completed, report March 7, 2006
- Report: Approved by Office Director
- NTSB office: Major Investigations Division
- NTSB case key (mKey): 53530
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA01MA065
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/53530/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=53530
- Page: https://openairdocs.org/ntsb/DCA01MA065

## Probable cause

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 generated by the NTSB is under the control of the FBI.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with terrain/water, cruise
  - hijacking - performed, passenger (cause)

## Analysis

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 generated by the NTSB is under the control of the FBI.  The Safety Board does not plan to issue a report or open a public docket.

## Factual narrative

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 generated by the NTSB is under the control of the FBI.  The Safety Board does not plan to issue a report or open a public docket.

## Aircraft

- Registration: [N591UA](https://openairdocs.org/deregistered/N591UA-2005-09-28), registration cancelled 2005-09-28, S/N 28142, built 1996 (OpenAirDocs)
- Reported make and model: Boeing 757
- Registry model: [Boeing 757-222](https://openairdocs.org/model/boeing-757-222) (registry code 1384956) (OpenAirDocs)
- Registry engine: [Pratt & Whitney PW2040](https://openairdocs.org/engine/pratt-whitney-pw2040) (registry code 52121, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Serial number: 28142
- Damage: Destroyed
- Flight: Part 121
- Operator: United Airlines
- Airworthiness certificate: Standard, Transport; Standard, Normal
- Departed: EWR, NEWARK, NJ
- Destination: SFO, SAN FRANCISCO, CA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; injuries: fatal; airline transport, commercial; airplane ratings: multi-engine land; seat: left
- Co-pilot; age 36; injuries: fatal; commercial, airline transport; airplane ratings: multi-engine land; seat: right

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20010911039179A](https://openairdocs.org/incident/20010911039179A), Sep 11, 2001: Boeing 757222, Shanksville, PA, Destroyed, 45 fatal. (-23) The aircraft was enroute from newark, NJ to san francisco, CA. Was hijacked and crashed in Shanksville, PA. The a/c was destroyed and all 45 souls on…

## Docket (1 files)

The files NTSB released with the investigation on February 23, 2006, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=53530. 132 KB in all.

- Information Document (item 1, .PDF, 132 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40256405&FileExtension=.PDF&FileName=Information%20Document-Master.PDF

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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