- Class A airspace generally begins from 18,000 feet mean sea level up to and including 60,000 feet. ...
- Class B airspace utilizes the space surrounding the nation's busiest airports and begins from the surface to 10,000 feet MSL. ...
- Class C surrounds busy airports that are not quite as busy as Class B airports.
The answer lies within the faded magenta circle that typically surrounds nontowered airports. In the example above, the floor of Class E is 700' on the faded side of the border (the airport surface area) and 1,200' everywhere else.
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Recall that the thick and fuzzy magenta circle or set of lines indicate Class E airspace starting at 700 ft. AGL. Everywhere else, meaning anytime you're outside of the thick and fuzzy magenta circle or set of lines, or nothing is being indicated on the sectional chart, Class E airspace starts at 1,200 ft. AGL.
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Most airspace in the United States is class E. The airspace above FL600 is also class E. No ATC clearance or radio communication is required for VFR flight in class E airspace. VFR visibility and cloud clearance requirements are the same as for class C and D airspaces when below 10,000 feet (3,000 m) MSL.
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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).
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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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Class C airspace is used around airports with a moderate traffic level. Class D is used for smaller airports that have a control tower. The U.S. uses a modified version of the ICAO class C and D airspace, where only radio contact with ATC rather than an ATC clearance is required for VFR operations.
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Class B Airspace, indicated by a solid blue line. Class B airspace is shown with a solid blue line around major airports in circles radiating outward.
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There are six classifications of airspace in the United States; A, B, C, D, E, and G. Class A is the most restrictive and Class G the least restrictive. They can be categorized as: Class A – 18,000 feet and higher above mean sea level (MSL). Class B – Airspace around the 40 most congested airports in the country.
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Light Blue = Class D controlled airspace Class D airspace is generally airspace from the surface to 2,500 feet above the airport elevation (charted in MSL) surrounding those airports that have an operational control tower.
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To enter Class C airspace, all aircraft must meet the following requirements: Two-way radio. Mode-C transponder. ADS-B Out device.
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Once you hear your callsign, you can enter the Class C airspace. Keep these important facts in mind: If the controller responds with (Aircraft callsign) standby, you have established two-way radio communication, and you can enter Class C airspace. If you don't hear your callsign, you CAN NOT enter the airspace.
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Class C Airspace Overview Class C Airspace shows up on the map around larger airports as a solid Magenta line. They have a layer similar to class B airspace, but on a smaller scale and typically with only one other shelf.
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The approval needed to enter Class C airspace is like Class D in that you do not need a specific clearance, but you do need to establish two-way communication with control. To be able to enter Class C airspace, a pilot must contact ATC prior to arrival.
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When you are flying under VFR (Visual Flight Rules), which you will be flying under 99.9% of the time as a private pilot, you do not need a clearance to enter into Class E airspace.
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