Aviation English
Flight Phase

What is Turbulence?

Turbulence Irregular motion of the air resulting from eddies and vertical currents, often causing bumpiness or abrupt altitude changes for aircraft. Pilots report turbulence to ATC for safety.

Source: ICAO Doc 9432, FAA PCG

How is “Turbulence” Used in Practice?

Report moderate turbulence from flight level three six zero to three eight zero. Request descent to avoid severe turbulence ahead.

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 Turbulence?

Irregular motion of the air resulting from eddies and vertical currents, often causing bumpiness or abrupt altitude changes for aircraft. Pilots report turbulence to ATC for safety.

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