1,703 Pneumatic (ATA 36) service difficulty reports for the Boeing 767 — 2.5% of all reported difficulties.
Most reported components
- SHUTOFF VALVE 358
- CONTROLLER 211
- VALVE 146
- WARNING MESSAGE 92
- WARNING SYSTEM 76
- ISOLATION VALVE 67
- NONE 49
- DUCT 46
- SENSOR 41
- CONNECTOR 37
- UNKNOWN 36
- WIRE 33
- CIRCUIT CARD 32
- PRIORITY VALVE 27
- PRECOOLER 26
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).