Which airspace classes are included in controlled airspace?

• A. Classes A, B, C, D, and E
• B. Class G
• C. Class F
• D. Class H

Answer: (A)

Controlled airspace in the United States includes Classes A, B, C, D, and E. These are the airspace where ATC provides separation and where certain weather and operating rules apply. Class G is the uncontrolled portion, existing below Class E in many places. Classes F and H aren’t designated in the U.S. system. So, the airspace that falls under controlled status is A through E.