Aviation English
Phonetic Alphabet

一 是什么？

一 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 “一” Used in Practice?

用一一八点一的频率联系塔台，获准降落一六左跑道。

Certification Exam Relevance

ICAO Level 4ICAO Level 5ICAO Level 6EASA FCL.055

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

Related Aviation English Terms

八七零点

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Frequently Asked Questions

一 是什么？

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 一 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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