What is シエラ?
In this glossary, シエラ 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 シエラ used in aviation?
In aviation communication, this term appears in contexts such as: "着陸後、Sierra経由で滑走路12を退出し、121.9でグランドと連絡し、スポットへタクシーしてください。"
Why does シエラ matter in aviation?
シエラ 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 シエラ?
シエラ is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.
What category does シエラ belong to?
In this glossary, シエラ 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.