# Incident 20040617009879I: Boeing 757223, San Francisco, CA, June 17, 2004

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: June 17, 2004, 09:30 local time
- Place: San Francisco, CA
- Airport: San Francisco International
- Phase of flight: Takeoff Ground Roll
- Operating rules: Air carrier (Part 121)
- Operator: AALA
- Location: 37.6188° N, 122.3754° W: Placed by OpenAirDocs at SAN FRANCISCO INTL (SFO), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.6188&lon=-122.3754&mi=10
- Aircraft: N623AA, a cancelled registration (https://openairdocs.org/deregistered/N623AA-2018-02-20) (OpenAirDocs)
- Registry model: Boeing 757-223 (registry code 1384957, https://openairdocs.org/model/boeing-757-223) (OpenAirDocs)
- Registry engine: Rolls-Royce RB-211 series (registry code 54555, https://openairdocs.org/engine/rolls-royce-rb-211-series) (OpenAirDocs)
- Reported make and model: BOEING 757223
- Reported engine: RROYCE RB211*
- People aboard: 195
- Fatal injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20040617009879I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) ON JUNE 17, 2004, AMERICAN AIRLINES FLIGHT 44 DEPARTED SAN FRANCISCO INTERNATIONAL AIRPORT, ENROUTE TO JFK. AT APPROXIMATELY 0930, JUST PRIOR TO AIRCRAFT ROTATION ON TAKE OFF THE CREW REPORTED THEY LOST BOTH AIRSPEED INDICATORS, BOTH ALTIMETERS, BOTH VERTICAL SPEED INDICATORS, BOTH FLIGHT DIRECTORS, AUTO THROTTLE, AUTO PRESSURIZATION 1 AND 2, BOTH EEC, RUDDER RATIO, MACH TRIM, TACAS, ALTITUDE REPORTING/AUDIO ALERT, REQUIRING THE USE OF STANDBY INSTRUMENTATION ONLY. THE AIRCRAFT RETURNED TO SFO, LANDING SAFELY WITHOUT INJURY TO CREW OR PASSENGERS. IT WAS DETERMINED, AFTER INSPECTION BY AMERICAN AIRLINES MAINTENANCE PERSONNEL, AT SAN FRANCISCO, THE FAILURE OF BOTH AIR DATA COMPUTERS WAS ATTRIBUTED TO THE UNITS NOT BEING SECURELY FASTENED IN THE AVIONICS COMPARTMENT RACK, CAUSING THE UNITS TO BECOME LOOSE, AND RENDERED INOPERABLE.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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