Aviation English
Phonetic Alphabet

Qu'est-ce que One ?

One The digit '1' as spoken in the ICAO radiotelephony alphabet, pronounced as 'One' for clarity in all numerical transmissions, including headings, frequencies, and flight levels.

Source: ICAO Doc 9432, FAA PCG

How is “One” Used in Practice?

Contactez la tour sur la fréquence un un huit décimal un, autorisé à atterrir piste Un Six gauche.

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

Qu'est-ce que One ?

The digit '1' as spoken in the ICAO radiotelephony alphabet, pronounced as 'One' for clarity in all numerical transmissions, including headings, frequencies, and flight levels.

Where can I learn this term for free?

Termify is a 100% free professional English app that teaches One and 4,071+ other industry terms with native pronunciation, IPA transcriptions and career quizzes. Available on iOS in 23 languages. No subscription, no credit card required.

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