Which type of airspace is often found around airports with smaller control tower operations?

The type of airspace commonly found around airports with smaller control tower operations is Class D airspace. This airspace is specifically designed to provide controlled airspace around airports that have an operational control tower but do not meet the traffic requirements to be classified as Class B or Class C airspace. Class D airspace extends vertically from the surface of the earth up to a designated altitude, providing an environment where the control tower can manage and coordinate air traffic in and around the airport effectively.

The characteristics of Class D airspace include that it requires pilots to establish two-way radio communication with the control tower before entering the airspace, ensuring that all arriving and departing aircraft can be safely managed. This type of airspace is essential for airports that handle smaller volumes of air traffic but still need to maintain safe operations through an organized and controlled environment.

Understanding the differences between the various classes of airspace is instrumental for pilots, as each classification has its own operational requirements and implications for air traffic management.