# SDR AALA2018082079009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2018
- Submitted: August 20, 2018
- Operation: Air carrier
- Aircraft: [N918US](https://openairdocs.org/aircraft/N918US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6443
- Aircraft time: 12,557 hours, 4,884 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Valve
- Condition: Inoperative
- Location: Brakes
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2018082079009

## Discrepancy

AFTER GEAR EXTENSION,  ALTERNATE BRAKE SYSTEM INOPERATIVE ECAM MESSAGE.  THE AIRCRAFT WAS GROUNDED.  REPLACED THE RIGHT DIRECT DRIVE BRAKE VALVE IAW AMM 32-43-35. NO FAULTS NOTED.  OK FOR SERVICE.

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