What is Six?
In this glossary, Six refers to: The ICAO/FAA radiotelephony spelling for the numeral '6'. Used for unambiguous communication of headings, altitudes, frequencies, and runways in ATC phraseology.
How is Six used in aviation?
In aviation communication, this term appears in contexts such as: "Maintain heading two four six, descend and maintain six thousand feet."
Why does Six matter in aviation?
Six 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 Six?
Six is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.
What category does Six belong to?
In this glossary, Six 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.