What is an important condition when flying in Class D airspace?

In Class D airspace, maintaining radio contact with Air Traffic Control (ATC) is essential for safe operations. This type of airspace typically surrounds airports with an operational control tower, and pilots must establish and maintain two-way communication with ATC prior to entering and while flying within that airspace. This communication is crucial for ensuring that flights are safely managed, particularly in areas with potential conflicts due to multiple aircraft operating in a limited space.

Establishing radio contact allows ATC to provide necessary information regarding traffic, weather, and any changes in airspace conditions. It helps to coordinate the movements of different aircraft, ensuring safety and efficiency in the airspace system. Consequently, pilots must be vigilant about being in contact with ATC when flying in Class D airspace.