# SDR AALA202408203876

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2024
- Submitted: August 20, 2024
- Operation: Air carrier
- Aircraft: [N909AM](https://openairdocs.org/aircraft/N909AM), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7756
- Aircraft time: 21,416 hours, 8,504 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: False Activation
- Location: Zone 900
- Stage of operation: CR
- 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/AALA202408203876

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: FORWARD LAVATORY SMOKE DETECTOR DETECTED FALSE INDICATIONS TWICE IN FLIGHT. LAVATORIES WERE UNOCCUPIED FOR A LONG TIME AS NOTED BY FLIGHT ATTENDANTS. ALARMS QUICKLY SELF CORRECTED AFTER A SECOND OR TWO. MAINTENANCE ACCOMPLISHED A SATISFACTORY OPERATIONAL TEST OF THE LAVATORY SMOKE DETECTION THRU MCDU PER AMM 26-17-00 WITH NO FAULTS NOTED.

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