# SDR AALA20170130007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2017
- Submitted: January 30, 2017
- Operation: Air carrier
- Aircraft: [N991AU](https://openairdocs.org/aircraft/N991AU), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7131
- Aircraft time: 832 hours, 332 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: False Activation
- Location: Lavatory
- Stage of operation: UK
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20170130007

## Discrepancy

AIRCRAFT WAS NOT GROUNDED. LAVATORY SMOKE DETECTOR WARNING INDICATION LASTING 25 SECONDS. SEVERAL HOURS LATER, SAME WARNING LASTING 7 SECONDS. NO EVIDENCE OF SMOKE.  ACCOMPLISHED SMOKE DETECTOR INSPECTION AND SYSTEM TEST IAW TSM 26-17-00 WITH NO FAULTS. OPERATIONAL CHECK GOOD.

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