1,013 Hydraulic Power (ATA 29) service difficulty reports for the Boeing 757 — 1.1% of all reported difficulties.
Most reported components
- PUMP 152
- HYDRAULIC LINE 135
- LINE 114
- HOSE 62
- PRESSURE SWITCH 59
- O-RING 43
- HYDRAULIC SYSTEM 36
- TRANSMITTER 25
- B-NUT 21
- WIRE 19
- SWITCH 18
- HYD LINE 14
- FLEX LINE 14
- CONNECTOR 14
- PACKING 14
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).