What is the altitude range for the outer circle of Class C airspace above airport elevation?

The outer circle of Class C airspace typically extends from 1,200 feet above the airport elevation up to 4,000 feet above that same elevation. This altitude range is specifically designed to accommodate a certain level of air traffic and provide a controlled environment for aircraft operating in and around busy airports.

The outer airspace of Class C is structured to create a buffer zone that enhances safety for both arriving and departing aircraft, while also allowing for the efficient management of air traffic. Understanding this specific range is crucial for pilots as it affects their navigation and operations, particularly when transitioning into and out of controlled airspace.