What are the two main categories of airspace?

The two main categories of airspace are classified as controlled and uncontrolled. Controlled airspace refers to specific areas of airspace where air traffic control (ATC) services are provided to manage aircraft operations. This includes the regulation of aircraft entry, altitude, and flight paths to ensure safety and efficiency. Uncontrolled airspace, on the other hand, is where ATC does not provide services, and pilots operate under their own authority, although they must still follow the general rules of aviation.

While the option mentioning regulatory and non-regulatory airspace reflects aspects of airspace classification, it does not encapsulate the primary categories used in aviation. Regulatory airspace pertains to government-constrained areas where certain rules apply, but it is not a primary division of airspace in the context of operations. Other options presented, such as military and civilian, are specific to types of users, and special use versus general aviation focuses on specific operational details rather than the overarching system of airspace classification. Understanding these primary categories is essential for pilots, air traffic controllers, and airport operations staff in ensuring safe and efficient air traffic management.