What is Zero?
In this glossary, Zero refers to: The digit '0' as spoken in the ICAO radiotelephony alphabet, pronounced as 'Zero' for clarity in altitude, speed, runway, and frequency readbacks.
How is Zero used in aviation?
In aviation communication, this term appears in contexts such as: "Ascienda y mantenga nivel de vuelo dos ocho cero, reporte alcanzando dos ocho cero."
Why does Zero matter in aviation?
Zero matters because it supports clear communication in Phonetic Alphabet contexts for Pilots, Air Traffic Controllers, and Cabin Crew. It also connects to aviation training and exam language such as ICAO Level 4, ICAO Level 5, ICAO Level 6, and EASA FCL.055.
Who uses Zero?
Zero is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.
What category does Zero belong to?
In this glossary, Zero is grouped under Phonetic Alphabet. Related pages in this category explain adjacent procedures, commands and operational concepts.
Where does this definition come from?
This definition is sourced from ICAO Doc 9432, FAA PCG and published by Protermify Aviation as a static aviation reference page.