# SDR CALA2023040601058

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2023
- Submitted: April 6, 2023
- Operation: Air carrier
- Aircraft: [N439UA](https://openairdocs.org/aircraft/N439UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 683
- Aircraft time: 77,345 hours, 31,235 cycles
- System (JASC): [2900 · Hydraulic Power System](https://openairdocs.org/jasc/2900)
- Part: Check Valve
- Part number: NA
- Condition: Low
- Location: Hyd Sys
- Stage of operation: DE
- How discovered: O
- Nature of condition: K
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023040601058

## Discrepancy

CREW REPORT: GREEN HYD LOW RES IN FLT FOUND GREEN SYS RESERVOIR EMPTY WITH EVIDENCE OF LEAKING IN LH WHEEL WELL FOUND LEAK AT HP MANIFOLD CHECK VALVE 1059GM O-RINGS ON ORDER. REMOVED AND REPLACED HP MANIFOLD CHECK VALVE 1059GM OPERATION CHECK GOOD NO LEAKS FOUND. REFERENCE AMM 29-11-14

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