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).

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