# SDR AALA2018121890006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2018
- Submitted: December 18, 2018
- Operation: Air carrier
- Aircraft: [N918US](https://openairdocs.org/aircraft/N918US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6443
- Aircraft time: 13,724 hours, 5,346 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Filter
- Condition: Dirty
- Location: Smoke Detector
- 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/AALA2018121890006

## Discrepancy

RECEIVED A MASTER WARNING LIGHT AND ECAM FOR LAVATORY SMOKE, LASTED 5 - 7 SECONDS,  WARNING STOPPED, COULD NOT FIND SMOKE OR FIRE IN THE LAVATORY.  PERFORMED CFDS INTERROGATION, ONLY LAVATORY SMOKE WARNING. THERE WAS NO CORRESPONDING FAILURE MESSAGE/COMPONENT FAULT. VISUALLY CHECKED LAVATORY TRASH CONTAINERS AND EXTINGUISHERS. PERFORMED TEST ON LAVATORY SMOKE DETECTION SYSTEM PER AMM 26-17-00. ALL LAVATORY FILTERS REPLACED AT THIS TIME.

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