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What is Cabin pressure controller 1 inoperative?

Cabin pressure controller 1 inoperative Primary automatic pressurization channel failed; crew managing cabin differential in manual mode per QRH procedures.

Source: ICAO Doc 9432, FAA PCG

How is “Cabin pressure controller 1 inoperative” Used in Practice?

Center, LUX two one zero, cabin pressure controller one inoperative; operating manual mode for pressurization.

Certification Exam Relevance

ICAO Level 4ICAO Level 5ICAO Level 6EASA FCL.055

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related Aviation English Terms

Ram Air Inlet Door FailureADIRS-1 inoperativeInterphone inoperativeTransponder Failure

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Frequently Asked Questions

What is Cabin pressure controller 1 inoperative?

Primary automatic pressurization channel failed; crew managing cabin differential in manual mode per QRH procedures.

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