373 Engine - Turbine/Turboprop (ATA 72) service difficulty reports for the Boeing 747 — 1.4% of all reported difficulties.
Most reported components
- ENGINE 153
- COMPRESSOR 35
- BLADE 23
- OIL SYSTEM 16
- BLADES 11
- SEAL 9
- LINE 8
- UNKNOWN 7
- BEARING 4
- TUBE 4
- TURBINE BLADES 4
- B-NUT 4
- ROTOR 4
- FAN BLADE 3
- COMPRESSOR WHEEL 3
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).