# SDR SWAA2021011441341

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2021
- Submitted: January 14, 2021
- Operation: Air carrier
- Aircraft: [N249WN](https://openairdocs.org/aircraft/N249WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 34951
- Aircraft time: 49,357 hours, 29,560 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Detector
- Condition: False Activation
- Location: Aft Lavatory
- Stage of operation: AP
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021011441341

## Discrepancy

AFT LAV FIRE ALARM SOUNDED ON APPROACH.  NO SMOKE, FIRE OR FUMES NOTED.  REMOVED & REPLACED AFT LAV SMOKE DETECTOR, IAW MM 26-14-01.  ALSO COMPLIED WITH SELF TEST TASK 26-14-00-710-802.  OPERATIONS CHECKED OK.  ALSO INSPECTED THE AFT LAV SMOKE TEMP STRIP.  NO ABNORMALITY NOTED, IAW MM REF 26-24-01.

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