Aviation English
Emergencies

What is Abnormal Procedure?

Abnormal Procedure A specific set of steps followed by pilots to address system malfunctions or unusual situations not classified as emergencies.

Source: ICAO Doc 9432, FAA PCG

How is “Abnormal Procedure” Used in Practice?

The crew initiated an abnormal procedure to address the low hydraulic pressure warning.

Certification Exam Relevance

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

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

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Frequently Asked Questions

What is Abnormal Procedure?

A specific set of steps followed by pilots to address system malfunctions or unusual situations not classified as emergencies.

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