Surrounding airports with radar and substantial traffic describes which airspace?

The airspace that is characterized by surrounding airports with radar services and substantial traffic is Class B airspace. This type of airspace is typically found around the busiest airports in the United States and is designed to manage and safely integrate a high volume of air traffic, including commercial airliners and general aviation.

Class B airspace extends from the surface to a specific altitude, often 10,000 feet above sea level, and usually has a multi-layered structure resembling an upside-down wedding cake. The requirement for pilots operating in Class B airspace includes the need for specific training and a clearance from air traffic control, reflecting the high level of traffic and potential complexity of operations in this airspace.

While Class C airspace also involves airports with radar and moderate traffic, it does not possess the same volume or complexity as Class B. Class D airspace surrounds smaller airports that typically do not have as substantial traffic. Class A airspace is exclusively for high-altitude flight, typically above 18,000 feet, and is not specifically defined by radar service surrounding any particular airports.

Understanding the distinctions among these classes of airspace is crucial for operating unmanned aircraft safely and legally.