Class D airspace requires which of the following to enter?

Class D airspace requires which of the following to enter?

• A. Surface to 4000 AGL; require IFR flight plan
• B. Surface to 2500 AGL; need two-way radio communication to enter
• C. Surface to 1000 AGL; no radio required
• D. Surface to 2000 AGL; require two-way radio

Answer: (B)

Class D airspace is a controlled area surrounding many local airports where ATC provides traffic advisory services. The key requirement to enter is establishing two-way radio communication with the controlling facility before you enter, and you must maintain that two-way communication while you’re inside. The ceiling of Class D is from the surface up to 2,500 feet above the airport (often referred to as 2,500 ft above the airport). That makes the option stating surface to 2,500 ft and the need for two-way radio communication the correct one. The other choices either misstate the vertical extent or omit the radio communication requirement, or wrongly mention IFR flight plans.

Class D airspace is a controlled area surrounding many local airports where ATC provides traffic advisory services. The key requirement to enter is establishing two-way radio communication with the controlling facility before you enter, and you must maintain that two-way communication while you’re inside. The ceiling of Class D is from the surface up to 2,500 feet above the airport (often referred to as 2,500 ft above the airport). That makes the option stating surface to 2,500 ft and the need for two-way radio communication the correct one. The other choices either misstate the vertical extent or omit the radio communication requirement, or wrongly mention IFR flight plans.