307 Flight Controls (ATA 27) service difficulty reports for the Airbus A321 (all variants) — 0.8% of all reported difficulties.
Most reported components
- ACTUATOR 65
- COMPUTER 39
- FLAP SYSTEM 22
- UNKNOWN 20
- SLAT SYSTEM 15
- STRUT 12
- PROXIMITY SENSOR 11
- LIMITER 9
- HINGE FITTING 9
- CONTROL SERVO 6
- NONE 6
- RELAY 5
- SENSOR 5
- WARNING MESSAGE 5
- CONTROL UNIT 4
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).