What is the maximum speed allowed in the inner 4 nautical mile radius of Class C airspace?

The maximum speed allowed in the inner 4 nautical mile radius of Class C airspace is 200 knots. This speed limit is established to ensure the safety and efficiency of operations within controlled airspace, especially close to airports where air traffic may be dense.

Class C airspace is designed to manage the flow of air traffic around busy airports with significant operations, and this speed limit helps to reduce the likelihood of wake turbulence and allows for better communication and maneuverability in the vicinity of the airport. By limiting speed, the air traffic control (ATC) can maintain a structured environment, fostering safe aircraft separation and efficient traffic handling.

In addition, the speed limit is particularly relevant as it helps pilots prepare for landing and communication with ATC, ensuring they can react appropriately to instructions and situational changes.