# SDR AALA202307314792

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2023
- Submitted: July 31, 2023
- Operation: Air carrier
- Aircraft: [N440AN](https://openairdocs.org/aircraft/N440AN), registered now
- Make and model: Airbus A321-253NX
- Registry model: [Airbus A321-253NX](https://openairdocs.org/model/airbus-a321-253nx) (OpenAirDocs)
- Aircraft serial: 10643
- Aircraft time: 6,817 hours, 1,826 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: UNKNOWN
- Condition: False Indication
- Location: Zone 900 - Lav/G
- Stage of operation: AP
- 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/AALA202307314792

## Discrepancy

AIRCRAFT WAS GROUNDED: ON FINAL APPROACH RECEIVED 2 SMOKE LAVATORY WARNINGS AND AGAIN ON GROUND. MAINTENANCE INSPECTED LAVATORY A DETECTOR AND PERFORMED BITE TEST OF SMOKE DETECTION SYSTEM ALONG WITH A LAVATORY SMOKE DETECTOR TEST WITH NO FAULTS BEING NOTED.

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