# SDR CALA2019040500522

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 2019
- Submitted: April 5, 2019
- Operation: Air carrier
- Aircraft: [N476UA](https://openairdocs.org/aircraft/N476UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1508
- Aircraft time: 56,785 hours, 24,496 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: O-Ring
- Condition: Failed
- Location: Brake Valve
- Stage of operation: NR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2019040500522

## Discrepancy

Y RSVR LO LVL DISPLAYED ON UPPER ECAM SCREEN. - HYD. CHANGED 2 O-RINGS ON THE AUTO SELECTOR BRAKE VALVE. LEAK CHECKED, BUT VALVE STILL LEAKED HYDRAULIC FLUID DUE TO A CRACK IN THE VALVE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.