# SDR AALA202107121255

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 11, 2021
- Submitted: July 12, 2021
- Operation: Air carrier
- Aircraft: [N916US](https://openairdocs.org/aircraft/N916US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6420
- Aircraft time: 21,292 hours, 8,390 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: False Indication
- Location: Aft Lavatory
- Stage of operation: NR
- 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/AALA202107121255

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: AFT LAVATORY AND SMOKE DETECTOR MASTER WARN INDICATION SPURIOUS SIGNAL LASTED 30 SECONDS. FLIGHT ATTENDANTS CONFIRMED NO SMOKE. ACCOMPLISHED AFT LAVATORY & SMOKE DETECTOR POWER UP TEST AND RESET AS PER AMM 26-17-00.

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