# Incident 20080922847549I: Boeing 757223, Chicago, IL, September 22, 2008

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: September 22, 2008, 13:42 local time
- Place: Chicago, IL
- Airport: Chicago O'Hare International
- Damage: Minor damage
- Phase of flight: Level Off Touchdown
- Operating rules: Air carrier (Part 121)
- Operator: AALA
- Location: 41.9786° N, 87.9047° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=41.9786&lon=-87.9047&mi=10
- Aircraft: N197AN, a cancelled registration (https://openairdocs.org/deregistered/N197AN-2026-07-31) (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
- People aboard: 191
- Fatal injuries: 0
- Pilot flight hours: 12,000 total, 3,000 in this make and model, 139 in the last 90 days
- NTSB investigation: [NTSB CHI08IA292](https://openairdocs.org/ntsb/CHI08IA292) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20080922847549I

## Narrative

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

(-23) FAILURE OF TEH K106 RELAY B1B2 CONTACTS INITIALLY CAUSED LOSS OF ELECTRICAL POWER TO THE DC BAT BUS AND DC STBY BUS.  AS DIRECTED BY THE QRH, CREW POSITIONED STBY PWR SELECTOR TO "BAT" POSITION WHICH CAUSED THE DC BAT BUS, DC STBY BUS, AC STBY BUS, AND HOT BAT BUS TO BE POWERED SOLELY BY THE MAIN BATTERY.  THE CREW ELECTED TO CONTINUE THE FLIGHT.  THE MAIN BATTERY POWER WAS DEPLETED IN 1 HR 40 MINUTES WHICH CAUSED THE LOSS OF NUMEROUS SYSTEMS THAT WERE THEN DEPENDENT ON THE MAIN BATTERY PWR.  THE AIRCRAFT ANTI SKID, TR, SPD BRAKES WERE AFFECTED AND THE AIRCRAFT BLEW/DAMAGED ALL 8 TIRES AND BRAKES ON TOUCHDOWN.  THE CREW DELIBERATELY STEERED THE AIRCRAFT OFF THE LEFT SIDE OF THE DEPARTURE END OF THE RUNWAY INTO THE TALL GRASS AND MUD TO STOP IT.

## The NTSB's investigation of this event (1)

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.

- [NTSB CHI08IA292](https://openairdocs.org/ntsb/CHI08IA292), Sep 22, 2008: Boeing 757-223 (N197AN), Chicago, IL, incident, minor damage. Probable cause: The failure of an electrical relay due to eroded contacts and the flight crew's decision to continue a flight that was operating on battery power.

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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