# SDR DALA2025111508365

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 14, 2025
- Submitted: November 15, 2025
- Operation: Air carrier
- Aircraft: [N521DT](https://openairdocs.org/aircraft/N521DT), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 11082
- Aircraft time: 13,221 hours, 3,230 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Control Unit
- Condition: Faulted
- Location: Zone 700
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025111508365

## Discrepancy

AIRCRAFT 5021, ON GROUND SMOKE FROM GASPER VENT, ECAM AVIONICS SMOKE MESSAGE ACTIVATED AND EXTINGUISHED AFTER C/B TRIPPED. BRK 1 FAULT MESSAGE REMAINED. CORRECTIVE ACTION: REPLACED BSCU PER A321 AMM 32-42. (LP 8138406)

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