What is the maximum indicated airspeed permitted when at or below 2,500 feet AGL within 4 NM of a primary airport in Class C or D airspace?

The maximum indicated airspeed permitted when at or below 2,500 feet AGL within 4 nautical miles of a primary airport in Class C or D airspace is 200 knots. This regulation is intended to ensure safety and better manage air traffic in busy terminal environments. At these altitudes and proximity to airports, traffic can be dense, and limiting airspeed helps pilots maintain better control and enhances the ability to avoid other aircraft.

It's important for pilots to adhere to this speed limit to facilitate safe operations, especially during takeoff and landing phases. Keeping speeds within this limit allows for effective communication with air traffic control and enhances situational awareness among pilots operating in the vicinity of an airport. Therefore, maintaining a maximum of 200 knots in Class C or D airspace below 2,500 feet AGL supports safe air traffic flow and minimizes the risk of mid-air collisions.