376 Fuel (ATA 28) service difficulty reports for the Boeing 777 (all variants) — 1.4% of all reported difficulties.
Most reported components
- PROBE 36
- PUMP 36
- VALVE 34
- UNKNOWN 25
- PROCESSOR 23
- ACTUATOR 20
- PRESSURE SWITCH 13
- PROCESSING UNIT 11
- CHECK VALVE 11
- SEAL 11
- SWITCH 10
- CONNECTOR 9
- INDICATION SYS 9
- CONTROL UNIT 8
- O-RING 7
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).