96 Engine Oil (ATA 79) service difficulty reports for the Airbus A321 (all variants) — 0.3% of all reported difficulties.
Most reported components
- SENSOR 18
- UNKNOWN 11
- WARNING SYSTEM 9
- NONE 8
- TRANSMITTER 7
- OIL SYSTEM 5
- CHIP DETECTOR 5
- PRESSURE SENSOR 4
- VALVE 4
- MONITOR 2
- INDICATION SYS 2
- ENGINE 2
- EIU 2
- PRESSURE SWITCH 1
- COMPUTER 1
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).