Airspace at an airport with a part-time control tower is Class D airspace only when what condition is met?

Airspace at an airport with a part-time control tower is Class D airspace only when what condition is met?

• A. when the associated control tower is in operation
• B. during daylight hours only
• C. only during weekends
• D. when weather is VFR

Answer: (A)

Class D airspace exists around airports that have an operating control tower, and with a part-time tower this designation is active only while the tower is in operation. When the tower is open, you must establish two-way radio communication with the tower before entering and maintain contact while in the airspace. If the tower is closed, the airspace no longer carries Class D characteristics. The other factors listed—daylight hours, weekends, or weather—do not determine the airspace class. So the airspace is Class D only when the associated control tower is in operation.

Class D airspace exists around airports that have an operating control tower, and with a part-time tower this designation is active only while the tower is in operation. When the tower is open, you must establish two-way radio communication with the tower before entering and maintain contact while in the airspace. If the tower is closed, the airspace no longer carries Class D characteristics. The other factors listed—daylight hours, weekends, or weather—do not determine the airspace class. So the airspace is Class D only when the associated control tower is in operation.