What types of airports are typically surrounded by Class C airspace?

Airports surrounded by Class C airspace are typically those with an operational control tower. Class C airspace is designated for airports that have a moderate level of air traffic and provides the necessary separation of aircraft to ensure safety. The presence of an operational control tower is crucial in Class C airspace as it facilitates communication and coordination between the tower and approaching or departing aircraft, thereby managing the flow of air traffic efficiently.

Airports with only visual flight rules, private airstrips and helipads, or general aviation fields without control towers do not meet the criteria for Class C airspace. These types of airports are usually associated with less complex air traffic environments and are commonly located in Class G airspace or Class E airspace, but they do not possess the infrastructure needed to operate within Class C airspace effectively.