Which class becomes Class E when the control tower is not in operation?

Which class becomes Class E when the control tower is not in operation?

• A. Class D
• B. Class C
• C. Class B
• D. Class G

Answer: (A)

The situation hinges on what happens to airspace around a towered airport when the tower isn’t operating. The airspace that’s designated for a towered airport is Class D. When the control tower closes, that specific Class D airspace reverts to Class E. That means you’re no longer in a tower-controlled environment, and the rules that apply to VFR flight under Class E take effect (for example, no ATC clearance needed for basic VFR, though IFR still requires clearance). So the airspace that was Class D becomes Class E once the tower isn’t in operation. The other classes don’t undergo this automatic change simply due to the tower closing.

The situation hinges on what happens to airspace around a towered airport when the tower isn’t operating. The airspace that’s designated for a towered airport is Class D. When the control tower closes, that specific Class D airspace reverts to Class E. That means you’re no longer in a tower-controlled environment, and the rules that apply to VFR flight under Class E take effect (for example, no ATC clearance needed for basic VFR, though IFR still requires clearance).

So the airspace that was Class D becomes Class E once the tower isn’t in operation. The other classes don’t undergo this automatic change simply due to the tower closing.