# SDR AALA201907309017

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2019
- Submitted: July 31, 2019
- Operation: Air carrier
- Aircraft: [N921US](https://openairdocs.org/aircraft/N921US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6523
- Aircraft time: 15,353 hours, 5,864 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Control Unit
- Condition: Malfunctioned
- Location: Smoke Detector
- Stage of operation: NR
- How discovered: O
- Nature of condition: J, B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201907309017

## Discrepancy

AIRCRAFT NOT GROUNDED: PILOT REPORTS ECAM MAINT MESSAGE -SMOKE. MAINTENANCE RESET SDCU #1 +#2 C/BS AND PERFORMED OPS CHECK IAW AMM 26-16-00. NO FAULTS NOTED.

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