# SDR AALA202509110859

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2025
- Submitted: September 11, 2025
- Operation: Air carrier
- Aircraft: [N560UW](https://openairdocs.org/aircraft/N560UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5300
- Aircraft time: 38,889 hours, 15,964 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Control Unit
- Part number: E21327107
- Part serial: 12124
- Condition: Faulted
- Location: Zone 700 Brakes
- Part time: 1,000 hours, 561 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202509110859

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED RIGHT BRAKE HARD SHUTTER WHILE BRAKING AT SLOW SPEEDS 1-3 KNOTS. MAINTENANCE REPLACED THE #4 MAIN LANDING GEAR TACHOMETER PER AMM 32-42-57 (AALA202509111082) AND BSCU PER AMM 32-42-34. (AALA202509110859) A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ISSUES NOTED.

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