# SDR AALA202508084030

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 2025
- Submitted: August 8, 2025
- Operation: Air carrier
- Aircraft: [N421UW](https://openairdocs.org/aircraft/N421UW), registered now
- Make and model: Airbus A321-253NX
- Registry model: [Airbus A321-253NX](https://openairdocs.org/model/airbus-a321-253nx) (OpenAirDocs)
- Aircraft serial: 10095
- Aircraft time: 17,929 hours, 4,808 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: PPC120000
- Part serial: 72890
- Condition: False Indication
- Location: Zone 900
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202508084030

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: INTERMITTENT SMOKE LAVATORY SMOKE ECAM ILLUMINATED DURING CRUISE FOR AFT MID LAVATORY. MAINTENANCE REPLACED LAVATORY L SMOKE DETECTOR AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 26-17-15,

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