134 Communications (ATA 23) service difficulty reports for the Airbus A321 (all variants) — 0.4% of all reported difficulties.
Most reported components
- CIDS 16
- UNKNOWN 9
- ELECTRICAL BOX 8
- DIRECTOR 8
- BATTERY 6
- COUPLER 6
- CONTROL PANEL 5
- TRANSCEIVER 5
- DECODER 4
- DEU 4
- SPEAKER 4
- HANDSET 3
- JACK 3
- POWER SUPPLY 3
- RADIO 3
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).