Which statement is true about the blue and magenta colors used to depict airports on Sectional Aeronautical Charts?

• A. Airports with control towers underlying Class B, C, D, and E airspace are shown in blue
• B. All airports without towers are blue
• C. Blue indicates uncontrolled airspace
• D. Magenta indicates airports with restricted airspace

Answer: (A)

On Sectional charts, the color of the airport symbol shows whether there is an operating control tower. A blue symbol means the airport has a control tower, and these towered airports lie within controlled airspace, typically Class B, C, D, or E. Magenta is used for airports without a tower. It’s not about restricted airspace—the color doesn’t indicate that; restricted areas are shown with their own boundaries elsewhere on the chart. So, the statement that airports with control towers underlying Class B, C, D, and E airspace are shown in blue is the correct reflection of how the colors convey tower status and related airspace.