A blue segmented circle on a sectional Chart depicts which class airspace?

• A. Class D
• B. Class C
• C. Class B
• D. Class E

Answer: (A)

The blue segmented circle shows Class D airspace—the surface-based airspace around a towered airport. On sectional charts, Class D is depicted with a blue segmented boundary circling the airport symbol. Inside this airspace, you must establish two-way radio communication with the tower before entering and maintain that communication while operating there. The top of Class D is typically up to 2,500 feet above the airport. Other airspace types are drawn differently (Class B with solid blue lines, Class C with solid magenta lines, etc.), which is why this blue segmented circle uniquely identifies Class D.