Which statement best describes Class E airspace?

• A. A Controlled Airspace Not Classified as A, B, C, or D
• B. A Prohibited Area
• C. An Uncontrolled Airspace Over Rural Areas
• D. A Military Operating Area

Answer: (A)

Class E is the portion of the airspace that’s controlled but isn’t one of the four primary classifications (A, B, C, or D). It serves as the broad backdrop for most en route and many terminal operations, giving ATC authority to manage IFR traffic and provide services, while allowing many VFR flights to operate under specific weather minimums. This description fits Class E precisely, distinguishing it from other special categories like Prohibited Areas, MOAs, or from uncontrolled airspace. In short, Class E is controlled airspace not designated as the other classes, which is why this option is the best description.