Private Pilot Private Exam

A blue segmented circle on a Sectional Chart typically indicates which class of airspace?

1. Class C

2. Class B

3. Class D

4. Class E

The correct answer is: Class D

A blue segmented circle on a Sectional Chart is indicative of Class D airspace. This type of airspace is controlled and typically surrounds airports that have an operational control tower. The segmented nature of the circle signifies the boundary of this airspace, which usually extends from the surface up to a specified upper limit, often 2,500 feet above ground level. Class D airspace is designed to ensure that aircraft operating in the vicinity of an airport can do so safely with air traffic control services provided to maintain orderly traffic flow. It's important for pilots to be aware of the boundaries of this airspace to comply with communication requirements and aeronautical rules. In contrast, Class B airspace, usually indicated by a solid blue circle, surrounds the busiest airports and operates at higher altitude levels, while Class C airspace, marked by a solid magenta circle, encompasses airports that have a lesser but significant level of air traffic. Class E airspace, found in many locations but not usually marked clearly on sectional charts as Class D is, covers various designated airspace not classified under A, B, C, or D. Understanding these distinctions is critical for pilots to navigate safely and comply with regulations.