What is Seis?
In this glossary, Seis 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 Seis used in aviation?
In aviation communication, this term appears in contexts such as: "Mantenha rumo dois quatro seis, desça e mantenha seis mil pés."
Why does Seis matter in aviation?
Seis 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 Seis?
Seis is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.
What category does Seis belong to?
In this glossary, Seis 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.