When a control tower, located on an airport within Class D airspace, ceases operation for the day, what happens to the airspace designation?
A
The airspace designation normally will not change.
B
The airspace remains Class D airspace as long as a weather observer or automated weather system is available.
C
The airspace reverts to Class E or a combination of Class E and G airspace during the hours the tower is not in operation.✓ Correct Answer
Explanation
AIM 3-2-5 explains that when a part-time tower closes, the Class D airspace reverts to Class E, or a combination of Class E and Class G, during the hours the tower is not operating, as listed in the Chart Supplement. A weather observer or automated system does not keep it Class D.
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