429 Pneumatic (ATA 36) service difficulty reports for the Boeing 757 — 0.4% of all reported difficulties.
Most reported components
- SHUTOFF VALVE 85
- DUCT 56
- VALVE 42
- PILOT VALVE 32
- CONTROLLER 26
- SENSOR 20
- REGULATOR 17
- CLAMP 14
- UNKNOWN 12
- ISOLATION VALVE 9
- BLEED AIR SYS 7
- NONE 7
- PNEUMATIC SYSTEM 6
- WARNING SYSTEM 6
- CIRCUIT CARD 6
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).