3,296 Air Conditioning (ATA 21) service difficulty reports for the Bombardier CRJ (all variants) — 1.9% of all reported difficulties.
Most reported components
- UNKNOWN 878
- ACM 543
- A/C PACK 310
- COALESCER BAG 206
- FAN 154
- ODOR 99
- DUCT 87
- CONTROLLER 84
- OUTFLOW VALVE 71
- SHUTOFF VALVE 70
- NONE 59
- FILTER 47
- SENSOR 40
- CABIN PRESSURE 39
- VALVE 36
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).