Class D airspace exists only when the associated control tower is in operation. Which statement describes when Class D airspace is active?

Class D airspace exists only when the associated control tower is in operation. Which statement describes when Class D airspace is active?

• A. When the associated control tower is in operation
• B. Only during daylight
• C. Only on weekends
• D. When weather is IFR

Answer: (A)

Class D is active only when the associated control tower is operating. That means the airspace exists and requires two-way radio communication with the tower during the tower’s published hours. When the tower is open, Class D typically extends from the surface up to about 2,500 feet above the airport elevation. If the tower closes, that airspace reverts to the surrounding Class E or, in some cases, Class G, so the Class D designation is not in effect. Weather conditions, daylight, or weekends do not determine when it’s active—it's all about the tower being on duty. To fly legally through that space, you must have established two-way communication with the tower during its hours.

Class D is active only when the associated control tower is operating. That means the airspace exists and requires two-way radio communication with the tower during the tower’s published hours. When the tower is open, Class D typically extends from the surface up to about 2,500 feet above the airport elevation. If the tower closes, that airspace reverts to the surrounding Class E or, in some cases, Class G, so the Class D designation is not in effect. Weather conditions, daylight, or weekends do not determine when it’s active—it's all about the tower being on duty. To fly legally through that space, you must have established two-way communication with the tower during its hours.