124 Engine Fuel & Control (ATA 73) service difficulty reports for the Boeing 747 — 0.5% of all reported difficulties.
Most reported components
- HMU 12
- FMU 8
- PUMP 8
- LINE 7
- WIRE 6
- VALVE 6
- FUEL FILTER 6
- FILTER 6
- ECU 4
- ENGINE 3
- TUBE 3
- MANIFOLD 3
- CONNECTOR 3
- EEC 3
- FUEL LINE 3
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).