238 Engine Oil (ATA 79) service difficulty reports for the Boeing 727 — 0.4% of all reported difficulties.
Most reported components
- SWITCH 24
- TRANSMITTER 23
- INDICATOR 18
- CONNECTOR 12
- WARNING LIGHT 12
- PRESSURE SWITCH 11
- WIRE 11
- ENGINE 11
- BYPASS SWITCH 8
- O-RING 7
- OIL COOLER 7
- LINE 6
- OIL PRESS SWITCH 5
- BYPASS LIGHT 5
- OIL FILTER 5
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).