What is a Class C control zone?

Class Charlie or Class C airspace is a busy category of controlled airspace found near mid-size airports that service both general aviation and airline traffic. The primary airport in a Class C airspace has both an operational Air Traffic Control Tower (ATCT) as well as Terminal Radar Approach Controls (TRACON).



A Class C control zone is a designated layer of controlled airspace designed to manage traffic flow around moderately busy airports. In 2026, the standard structure for Class C is a "two-tier" upside-down wedding cake: a core surface area extending 5 nautical miles (NM) from the airport and an outer "shelf" extending to 10 NM. To enter Class C airspace, a pilot must have a two-way radio and a transponder with altitude reporting (Mode C or ADS-B Out). Unlike Class B (major hubs), you do not need an explicit "clearance" to enter, but the air traffic controller must acknowledge your callsign. Within this zone, the controller provides mandatory separation between IFR (Instrument Flight Rules) and VFR (Visual Flight Rules) flights. This system ensures that regional jets and private pilots can coexist safely in the congested corridors surrounding mid-sized metropolitan airports.

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Class C: This is the controlled airspace above 7,500 feet and surrounding major airports. Both IFR and VFR flights are permitted and both require ATC clearance and separation service is to be provided by ATC. Class G: This airspace is uncontrolled.

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Class C airspace areas are designed to improve aviation safety by reducing the risk of mid-air collisions in the terminal area and enhance the management of air traffic operations therein. Aircraft operating in these airspace areas are subject to certain operating rules and equipment requirements.

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Class C service requires pilots to establish two-way radio communications before entering Class C airspace. If the controller responds to a radio call with, “(a/c call sign) standby,” radio communications have been established and the pilot can enter Class C airspace.

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Class C – Airspace around commercial airports that are less congested than the Class B airports. MacArthur Airport has Class C airspace. Class C typically has two rings, one from the ground to 4,000 feet above ground level (AGL) and above the airport and the outer ring from 1,500 feet to 4,000 feet above the airport.

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Like most controlled airspace, ALL pilots must notify and receive approval from the FAA to fly in Class C airspace. Pilots must also follow the necessary procedure to receive permission.

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Class C Airspace (Mandatory Radar) A shelf area with an outer radius of 10 nautical miles surrounds the core area. It extends from 1200 feet AGL to 4000 feet AGL. The airspace is depicted on charts as 2 concentric magenta circles.

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Class B airspace surrounds the busiest airports from the surface to 10,000 feet MSL. The dimensions of Class B airspace vary depending on the needs of the airport. Class C airspace extends from the surface to 4,000 feet MSL.

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A Class C commercial driver 's license (CDL) is the most common type of license and allows drivers to operate vehicles designed to transport fewer than 24 passengers including themselves. This includes single vehicles fewer than 26,001 pounds or towing a trailer with a GVWR fewer than 20,001 pounds.

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Entering Class C airspace requires a mode C transponder, and two-way communications (meaning that ATC says your tail number). To transition through or land at a Class C airspace, make the request within 20 miles.

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Both Visual Flight Rules (VFR) and Instrument Flight Rules (IFR) traffic can operate within Class C airspace provided they meet the operational requirements and are within weather minimums for their flight rules.

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Separation is provided within the Class C airspace and the outer area after two-way radio communications and radar contact are established. VFR aircraft are separated from IFR aircraft within the Class C airspace by any of the following: Visual separation. 500 feet vertical separation.

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The purpose of Class C airspace is to enhance aviation safety in the terminal area and to decrease the risk of midair collisions by providing traffic separation service.

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If you are receiving flight following, you are automatically cleared to enter the outer ring of a TFR and to enter Class C or D airspace. However, there is one circumstance that flight following will not protect you from, and that is flying into Class B airspace.

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