Aviation English
Flight Phase

What is True airspeed?

True airspeed The actual speed of an aircraft relative to the air mass through which it is flying, corrected for altitude and temperature.

Source: ICAO Doc 9432, FAA PCG

How is “True airspeed” Used in Practice?

The pilot reported a true airspeed of 470 knots while maintaining flight level three-five-zero.

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 True airspeed?

The actual speed of an aircraft relative to the air mass through which it is flying, corrected for altitude and temperature.

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