Definition
A VFR aeronautical chart published by the FAA at a scale of 1:500,000 that depicts a portion of the United States in detail, showing topography, airports, airspace boundaries, navigation aids, obstructions, and other information needed for visual flight navigation.
Plain English
A detailed paper or digital map pilots use to find their way visually. It shows the ground features, airports, and the shape of the airspace in one region of the country.
Context Anchor
Seen when planning a route, checking nearby special use airspace, or navigating visually with outside landmarks.
Derivation
‘Sectional’ comes from the fact that the country is divided into sections, with each chart covering one named section (such as the Los Angeles Sectional or the New York Sectional). The name simply tells you it is one piece of a larger set.
Why Pilots Care
It shows the location and vertical limits of special use airspace so pilots can avoid restricted or prohibited areas during visual flight.
Analogy
It is like using a detailed road map for one state instead of a small map of the whole country. The smaller area lets the map show much more useful detail.
Intuition Check
Do not read “sectional” as meaning a map divided into sections on the page. Here it means a pilot chart that covers one geographic section of the country in useful flight detail.
Example Sentence 1
Before departure, the pilot reviewed the sectional navigation map to identify any restricted areas along the planned route.
Example Sentence 2
Special use airspace boundaries appear on the sectional navigation map with specific colors and lines.