# SDR NWAA093785649

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 1, 2009
- Submitted: November 3, 2009
- Operation: Air carrier
- Aircraft: [N549US](https://openairdocs.org/aircraft/N549US), registered now
- Make and model: Boeing 757251
- Aircraft serial: 26496
- Aircraft time: 41,444 hours, 15,686 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Module
- Condition: Faulty
- Location: Fire Warning
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NWAA093785649

## Discrepancy

AT CRUISE, FIRE WARNING BELL ACTIVATED WITH NO OTHER INDICATION OF FIRE.  AIRCRAFT DIVERTED TO LAS AND LANDED WITHOUT INCIDENT.  MAINTENANCE REPLACED THE BELL/CHIME MODULE.

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