# SDR CALA2026042715735

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2026
- Submitted: April 27, 2026
- Operation: Air carrier
- Aircraft: [N444UA](https://openairdocs.org/aircraft/N444UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 824
- Aircraft time: 84,114 hours, 35,615 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Valve
- Part number: S4340092003
- Part serial: 1313
- Condition: Cracked
- Location: Hyd Sys
- Part time: 84,978 hours, 33,768 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026042715735

## Discrepancy

HYD Y RSVR LO LVL ECAMAFTER TAKEOFF DURING INSPECTION OF YELLOW HYDRAULIC SYSTEM FOUND CRACKED YELLOW PTU MANIFOLD. REMOVED AND REPLACED THE PTU SOLENOID VALVE (3012GL) REF AMM: 29-23-51-400-002-A. COMPLETED INSTALL UP TO AND INCLUDING STEP 4. B. OPS TEST STILL NEEDED.    REPLACED DUE TO LOW PRESSURE AFTER YELLOW HYDRAULIC MANIFOLD REPLACEMENT.  SUSPECT INTERNAL FAULT REF. 29-23-51-400-002-A.

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