# SDR AALA201604209001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2016
- Submitted: April 21, 2016
- Operation: Air carrier
- Aircraft: [N557UW](https://openairdocs.org/aircraft/N557UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5269
- Aircraft time: 12,213 hours, 4,950 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Air Filter
- Condition: Dirty
- Location: Smoke Detector
- Stage of operation: CR
- 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/AALA201604209001

## Discrepancy

AIRCRAFT WAS NOT GNDED.  IN CRUISE, AFT RT LAVATORY SMOKE ECAM ILLUMINATED WITH ASSOCIATED FIRE BELL.  BOTH LIGHT & BELL THEN EXTINGUISHED.  REPLACED AFT RT LAVATORY SMOKE DETECTOR FILTER & ACCOMPLISHED A SATISFACTORY SYS BITE CHECK IAW AMM 26-17-00-710-001A.

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