# SDR SWAA095721

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2009
- Submitted: September 9, 2009
- Operation: Air carrier
- Aircraft: [N675AA](https://openairdocs.org/aircraft/N675AA), registered now
- Make and model: Boeing 737-3A4
- Registry model: [Boeing 737-3A4](https://openairdocs.org/model/boeing-737-3a4) (OpenAirDocs)
- Aircraft serial: 23253
- Aircraft time: 74,971 hours, 63,881 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: PU90499R3
- Condition: Faulty
- Location: Lavatory
- Stage of operation: UK
- 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/SWAA095721

## Discrepancy

DIVERSION / DECLARED EMERGENCY.  AT APPROX 18,000 FEET, THE AFT LAV FIRE / SMOKE DETECTOR SOUNDED.  NO VISIBLE SMOKE NOTED.  DURING EMERGENCY EVACUATION, FLIGHT ATTENDANT NOTED BURNING ELECTRICAL SMELL.  COMPLIED WITH AIRCRAFT INSPECTION, NO DEFECTS FOUND.  REMOVED AND REPLACED AFT LAV SMOKE DETECTOR.

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