# SDR AALA201809129020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2018
- Submitted: September 12, 2018
- Operation: Air carrier
- Aircraft: [N973UY](https://openairdocs.org/aircraft/N973UY), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4893
- Aircraft time: 24,602 hours, 9,154 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Valve
- Part number: E213300011
- Part serial: 15038
- Condition: Defective
- Location: Brakes
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201809129020

## Discrepancy

ON EXTENSION OF LANDING GEAR,  AN ECAM MESSAGE FOR BRAKES ALTN L RELEASED, ILLUMINATED.  THE AIRCRAFT WAS GROUNDED. IAW TSM 32-43-00-810-824-A AND RESET BRAKING STEERING CONTROL UNIT,  FAULT CLEARED.  REPLACED THE LEFT BRAKE VALVE IAW AMM 32-43-35.  PERFORMED A BLEED IN AND OPS CHECKED IAW AMM 32-43-00.

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