# SDR AALA201908299031

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2019
- Submitted: August 29, 2019
- Operation: Air carrier
- Aircraft: [N549UW](https://openairdocs.org/aircraft/N549UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4932
- Aircraft time: 27,549 hours, 10,236 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Brake
- Part number: C20534100
- Part serial: 03431
- Condition: Damaged
- Location: Mlg
- Part time: 18,906 hours, 7,474 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201908299031

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT REPORTS ON PUSH BACK, GROUND CREW ADVISED THEY THOUGHT SMOKE WAS SEEN AT #2 MAIN. ALSO FELT VERY NOTICEABLE VIBRATION IN FLIGHT DECK. MAINTENANCE FOUND OUTER ROTOR DISK DAMAGED AND BREAKING APART. REPLACED #2 (L1) BRAKE ASSY IAW AMM 32-42-27-000-001-A AND 32-42-27-400-001-A. REPLACED #2 (L1) MAIN WHEEL ASSY IAW AMM 32-41-11-000-006-A AND 32-41-11-400-006-A.

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