474 Nacelles & Pylons (ATA 54) service difficulty reports for the Boeing 747 — 1.8% of all reported difficulties.
Most reported components
- SKIN 96
- PANEL 66
- ACCESS PANEL 35
- FRAME 30
- FAIRING 21
- STRUCTURE 21
- FITTING 12
- DOOR 9
- RUB STRIP 9
- BEAM 8
- LUG 7
- NONE 7
- NOSE COWL 6
- BEARING 6
- STRUT 6
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).