FlightFinder

1,008 Air Conditioning (ATA 21) service difficulty reports for the Boeing 777 (all variants) — 3.9% of all reported difficulties.

Most reported components

  • UNKNOWN 189
  • FAN 181
  • CONTROL VALVE 84
  • VALVE 64
  • SHUTOFF VALVE 46
  • ACM 45
  • CONTROLLER 44
  • COOLING FAN 33
  • SENSOR 31
  • DUCT 20
  • FILTER 20
  • A/C PACK 13
  • ODOR 13
  • OUTFLOW VALVE 12
  • AIR FILTER 12

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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