# SDR SWAA990540

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N378SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 26585
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Detector
- Part number: PU499R3
- Condition: Defective
- Location: Aft Lavatory
- Stage of operation: CL
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA990540

## Discrepancy

AIR TURNBACK DUE TO AFTER TAKEOFF, THE AFT LAV SMOKE ALARM WENT OFF.  REMOVED AND REPLACED SMOKE DETECTOR PER MM.

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