Aviation English
Basic ATC

What is Affirm?

Affirm A standard radiotelephony term meaning 'Yes'; used to indicate a positive response to a question or instruction.

Source: ICAO Doc 9432, FAA PCG

How is “Affirm” Used in Practice?

Tower: Do you have the weather information? Pilot: Affirm, we have the latest METAR.

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 Affirm?

A standard radiotelephony term meaning 'Yes'; used to indicate a positive response to a question or instruction.

Where can I learn this term for free?

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