Flight Phase
The speed of an aircraft relative to the surface of the Earth, as measured by navigation systems.
Quick answer: The speed of an aircraft relative to the surface of the Earth, as measured by navigation systems.
This term page is part of the Protermify Aviation glossary and is published as static HTML for fast indexing and clear language coverage.
The speed of an aircraft relative to the surface of the Earth, as measured by navigation systems.
Ground speed matters because it supports clear communication in Flight Phase 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.
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Questions and answers
In this glossary, Ground speed refers to: The speed of an aircraft relative to the surface of the Earth, as measured by navigation systems.
In aviation communication, this term appears in contexts such as: "ATC advised the flight crew that their ground speed had decreased due to strong headwinds."
Ground speed matters because it supports clear communication in Flight Phase 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.
Ground speed is mainly used by Pilots, Air Traffic Controllers, and Cabin Crew.
In this glossary, Ground speed is grouped under Flight Phase. Related pages in this category explain adjacent procedures, commands and operational concepts.
This definition is sourced from ICAO Doc 9432, FAA PCG and published by Protermify Aviation as a static aviation reference page.
The speed of an aircraft relative to the surface of the Earth, as measured by navigation systems.
ATC advised the flight crew that their ground speed had decreased due to strong headwinds.
English reference definition
ICAO Doc 9432, FAA PCG
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