# SDR SCNA20251103423

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 31, 2025
- Submitted: November 3, 2025
- Operation: Air carrier
- Aircraft: [N5479A](https://openairdocs.org/aircraft/N5479A), registered now
- Make and model: Boeing 737-83N
- Registry model: [Boeing 737-83N](https://openairdocs.org/model/boeing-737-83n) (OpenAirDocs)
- Aircraft serial: 32578
- Aircraft time: 67,979 hours, 40,833 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: Malfunctioned
- Location: Zone 200
- 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/SCNA20251103423

## Discrepancy

SMOKE ALARM WENT OFF WHEN WE WERE ON BASE TO FINAL   LAVATORY SMOKE DETECTION SYSTEMS.  REPLACED LAVATORY SMOKE DETECTOR IAW AMM 26-14-01, OPS CHECK GOOD,

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