What is Сиерра?
In this glossary, Сиерра refers to: The letter 'S' as spoken in the ICAO phonetic alphabet, used in ATC phraseology to identify taxiways, holding points, and aircraft callsigns.
How is Сиерра used in aviation?
In aviation communication, this term appears in contexts such as: "После посадки покиньте ВПП 12 через Сиерра и свяжитесь с диспетчером на 121.9 для руления к стоянке."
Why does Сиерра matter in aviation?
Сиерра 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 Сиерра?
Сиерра is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.
What category does Сиерра belong to?
In this glossary, Сиерра 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.