Which statement best describes Class D airspace height and radar assignment, with the correct option in the third position?

• A. 3500 ft AGL; Top 600 ft
• B. 2000 ft AGL; Top 400 ft
• C. 2500 ft AGL; Top 500 ft
• D. 3000 ft AGL; Top 1000 ft

Answer: (C)

Class D airspace is defined by its vertical extent relative to the airport. It goes from the surface up to 2,500 feet above the airport’s elevation. That means the height is described as 2,500 feet above the airport, or 2,500 feet AGL relative to where the airport sits on the ground. The radar assignment part refers to ATC providing radar services within that airspace when radar is available, and pilots must have two-way radio communication with ATC to operate there.

So the statement that matches this standard description is that Class D extends up to 2,500 feet above the airport elevation (expressed as 2,500 feet AGL for the height). The other options give heights that don’t align with the typical Class D vertical dimensions. The radar aspect is about ATC’s use of radar to provide separation and sequencing within that airspace when radar services are available.