# SDR CALA2021081801374

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2021
- Submitted: August 18, 2021
- Operation: Air carrier
- Aircraft: [N428UA](https://openairdocs.org/aircraft/N428UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 523
- Aircraft time: 83,183 hours, 32,505 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Packing
- Condition: Leaking
- Location: Ptu
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2021081801374

## Discrepancy

HYD Y QTY LOW...SYSTEM NORM B4 T/O LOST FLUID AT ALTITUDE PER CAPTAIN YELLOW HYDRAULIC SYSTEM RAN WITH 0 QTY. INSPECTED MLG WHEEL WELL AND FOUND YELLOW SYSTEM PRIORITY MANIFOLD ASSY (3015GM) MISTING HYD FLUID. REF IPC 29-13-15-02A SUSPECT ITEM 40 AND 10. IPC PAPERWORK IN FLIGHT DECK.  TORQUE UNION ON PTU MANIFOLD YELLOW HYD SYSTEM. REPLACED PACKING, O-RING. LEAK CHECKED ITEM 46 AND 47 NO LEAKS DETECTED, FOUND ITEM 10 LEAKING IPC 29-13-15-02A SHEET 1, REPLACED O RING ITEM 40 AND REPLACED ITEM 10 REF AMM 29-13-15 OPS GOOD NO LEAKS NOTED. AND REPLACED # 2 ENGINE HYDRAULIC CASE DRAIN FILTER PER TSM NO LEAKS DETECTED. ADD EMP:177154

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