What is First fluid?
In this glossary, First fluid refers to: The initial de-icing or anti-icing fluid applied to remove contaminants from aircraft surfaces, typically a heated mixture.
How is First fluid used in aviation?
In aviation communication, this term appears in contexts such as: "Ground, confirm first fluid application is complete before switching to second fluid during de-icing."
Why does First fluid matter in aviation?
First fluid matters because it supports clear communication in Fueling Deicing 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 First fluid?
First fluid is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.
What category does First fluid belong to?
In this glossary, First fluid is grouped under Fueling Deicing. 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.