133 Indicating & Recording (ATA 31) service difficulty reports for the Airbus A321 (all variants) — 0.4% of all reported difficulties.
Most reported components
- WARNING MESSAGE 62
- WARNING LIGHT 12
- DISPLAY 6
- CIDS 5
- SENSOR 5
- WARNING SYSTEM 4
- UNKNOWN 4
- RELAY 3
- FWC 2
- SDAC 2
- FAULT LIGHT 2
- FAULT MESSAGE 2
- COMPUTER 2
- PROBE 2
- LENS 1
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).