Class D airspace extends from the surface to how many feet above the airport elevation?

Class D airspace extends from the surface to how many feet above the airport elevation?

• A. 2,000 ft
• B. 3,000 ft
• C. 2,500 ft
• D. 4,000 ft

Answer: (C)

Class D airspace sits around a towered airport from the surface up to 2,500 feet above the airport’s elevation. That means its top is 2,500 feet higher than the field elevation, so the actual top altitude in MSL varies with each airport’s elevation. For example, if the airport elevation is 600 feet, the top would be 3,100 feet MSL. You must establish two-way radio communication with ATC before entering Class D, and the airspace is in effect only when the tower is operating. The standard vertical limit is 2,500 feet above the airport elevation, which is why that option is correct.

Class D airspace sits around a towered airport from the surface up to 2,500 feet above the airport’s elevation. That means its top is 2,500 feet higher than the field elevation, so the actual top altitude in MSL varies with each airport’s elevation. For example, if the airport elevation is 600 feet, the top would be 3,100 feet MSL. You must establish two-way radio communication with ATC before entering Class D, and the airspace is in effect only when the tower is operating. The standard vertical limit is 2,500 feet above the airport elevation, which is why that option is correct.