241 Hydraulic Power (ATA 29) service difficulty reports for the Airbus A330 (all variants) — 1.2% of all reported difficulties.
Most reported components
- PUMP 60
- O-RING 25
- UNKNOWN 23
- HYDRAULIC LINE 18
- LINE 12
- NONE 12
- HYDRAULIC SYSTEM 11
- PACKING 10
- PRESSURE SWITCH 8
- FILTER 7
- RELIEF VALVE 5
- HOSE 4
- FITTING 3
- ACCUMULATOR 3
- MANIFOLD 3
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).