Definition
The explanatory panel printed on an aeronautical chart that identifies the symbols, colors, line styles, and abbreviations used on that chart. It tells the pilot what each marking represents, including airport types, airspace boundaries, terrain features, navigation aids, obstructions, and topographic information.
Plain English
The key on the chart that shows you what every symbol, color, and line means so you can read the chart correctly.
Context Anchor
Seen on sectional charts and other aviation charts, especially during preflight planning or when checking an unfamiliar symbol.
Derivation
From the Latin legenda, meaning 'things to be read.' The legend is literally the part of the chart that must be read first, because it explains everything else on it.
Why Pilots Care
Pilots must consult the legend to correctly interpret chart symbols, ensuring accurate navigation and avoidance of restricted airspace or hazards.
Intuition Check
Do not read “legend” here as a story or myth. On a chart, a legend is the explanation of the chart’s symbols and markings.
Example Sentence 1
Before her cross-country flight, she checked the chart legend to confirm what the small magenta circle around the airport meant.
Example Sentence 2
Referring to the legend helped the student pilot identify which symbols marked airports with fuel services.