FAA Part 107 Drone Practice Test

How large is the radius of Class C airspace typically?

1. 2 NM

2. 5 NM

3. 10 NM

4. 15 NM

The correct answer is: 5 NM

Class C airspace typically has a radius of 5 nautical miles from the center of the airport. This type of airspace is designed to provide a controlled environment for aircraft arriving and departing from busy airports. Class C airspace usually extends from the surface up to 4,000 feet above the airport elevation. The airspace is structured in a cylindrical shape with the 5 NM radius, which allows for effective communication and management of different levels of air traffic. The provision of controlled airspace minimizes the risk of mid-air collisions and helps manage a larger volume of aircraft safely. In aviation regulation, certain standard sizes are established for different classes of airspace, which helps pilots familiarize themselves with the airspace structure and follow the requisite protocols to ensure safety. This distinction is important for drone operators who need to know which airspace they can operate in without causing disruptions to manned aircraft operations.