212 Engine Air (ATA 75) service difficulty reports for the Airbus A321 (all variants) — 0.6% of all reported difficulties.
Most reported components
- BLEED VALVE 42
- WARNING MESSAGE 27
- ACTUATOR 20
- VALVE 16
- UNKNOWN 13
- ENGINE 11
- SOLENOID VALVE 8
- SOLENOID 7
- BLEED AIR SYS 6
- DUCT 5
- ANTI-ICE VALVE 5
- SENSOR 5
- TRANSDUCER 4
- SHUTOFF VALVE 3
- CONTROLLER 3
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).