2,565 Auxiliary Power Unit (APU) (ATA 49) service difficulty reports for the Boeing 767 — 3.7% of all reported difficulties.
Most reported components
- APU 515
- UNKNOWN 177
- ECU 165
- OIL SYSTEM 98
- STARTER 95
- NONE 78
- WARNING SYSTEM 64
- ACTUATOR 54
- WARNING MESSAGE 54
- VALVE 53
- CONTROL VALVE 48
- MODULE 44
- ENGINE 43
- DUCT 40
- BLEED AIR SYS 38
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).