259 Engine Exhaust (ATA 78) service difficulty reports for the Boeing 747 — 1% of all reported difficulties.
Most reported components
- SLEEVE 30
- THRUST REVERSER 28
- NOZZLE 17
- SKIN 14
- STRUCTURE 13
- BRACKET 13
- RUB STRIP 11
- FAIRING 9
- DUCT 8
- SEAL 7
- ACCESS PANEL 6
- FRAME 5
- DOOR 5
- NONE 5
- COWLING 4
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).