Aviation English
Meteorology

What is severe turbulence?

severe turbulence Turbulence that causes large, abrupt changes in altitude and/or attitude. Aircraft may be momentarily out of control. Occupants are forced violently against seat belts.

Source: ICAO Doc 9432, FAA PCG

How is “severe turbulence” Used in Practice?

We are experiencing severe turbulence, requesting immediate descent to avoid.

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 severe turbulence?

Turbulence that causes large, abrupt changes in altitude and/or attitude. Aircraft may be momentarily out of control. Occupants are forced violently against seat belts.

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