4,444 Air Conditioning (ATA 21) service difficulty reports for the Airbus A320 (all variants) — 7.2% of all reported difficulties.
Most reported components
- UNKNOWN 2,180
- A/C PACK 593
- FAN 267
- FILTER 205
- CONTROLLER 120
- ECS 118
- OUTFLOW VALVE 115
- NONE 110
- VALVE 84
- ODOR 38
- COMPUTER 36
- CONTROL VALVE 35
- SENSOR 33
- ACM 32
- BLOWER 29
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).