# SDR AALA202504237574

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 22, 2025
- Submitted: April 23, 2025
- Operation: Air carrier
- Aircraft: [N546UW](https://openairdocs.org/aircraft/N546UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4885
- Aircraft time: 42,467 hours, 16,821 cycles
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Control Unit
- Condition: Faulted
- Location: Zone 700
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202504237574

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS DECLARED INBOUND INTO MIA DUE TO THE FLIGHT CREW REPORTING THAT AFTER TAKEOFF AND GEAR RETRACTION THEY RECEIVED ECAM CAUTION MESSAGES:WHEEL - NOSE WHEEL STEERING FAULT AND BRAKES SYSTEM 2 FAULT. THE CREW ACCOMPLISHED A SYSTEM RESET PER THE QRH AND BOTH FAULTS CLEARED. 5 MINUTES LATER THEY RECIEVED THE SAME FAULT MESSAGES WITH THE EXCEPTION THAT THIS TIME IT WAS A BRAKE SYSTEM 1 FAULT. THE FLIGHT CREW DIDI NOT ATTEMPT A SECOND RESET. THE AIRCRAFT LANDED SAFELY AT MIA AND WAS TOWED TO THE GATE. MAINTENANCE ACCOMPLISHED FAILURE OF THE BSCU SYSTEM 2 IDENTIFIED BY THE AFS TSM 32-42-00-810-864, SYSTEM RESET OK WITH NO FAULTS NOTED.

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