207 Fuel (ATA 28) service difficulty reports for the Boeing 747 — 0.8% of all reported difficulties.
Most reported components
- PUMP 31
- VALVE 19
- UNKNOWN 18
- FUEL TANK 14
- CONNECTOR 12
- ACTUATOR 8
- LINE 6
- FUEL LINE 6
- WARNING LIGHT 5
- FUEL SYS 5
- CIRCUIT CARD 5
- TRANSFER VALVE 4
- SEAL 3
- CONTROL UNIT 3
- SCAVENGE PUMP 3
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).