# SDR AALA201709059023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2017
- Submitted: September 7, 2017
- Operation: Air carrier
- Aircraft: [N199UW](https://openairdocs.org/aircraft/N199UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 5475
- Aircraft time: 15,587 hours, 6,237 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: PPC120000
- Part serial: 7476
- Condition: False Activation
- Location: Lavatory
- Part time: 24,291 hours, 9,617 cycles
- 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/AALA201709059023

## Discrepancy

AIRCRAFT WAS NOT GROUNDED. L4 LAVATORY SMOKE ALERT IN FLIGHT WITH CORRESPONDING ECAM WARNING FOR A DURATION OF 3 SECONDS FLIGHT ATTENDANT CONFIRMED NO SMELL OR VISUAL OF SMOKE. MAINTENANCE REPLACED AFT LEFT HAND LAVATORY (L4) SMOKE DETECTOR (4WQ) PER AMM 26-17-15 PB 0401. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK.

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