Is Class B airspace uncontrolled?

Controlled and uncontrolled airspaces are the ones you will spend most of your time flying within as a pilot. Controlled airspace consists of five tiers beginning with most restrictive to least restrictive: Class Alpha (A), Class Bravo (B), Class Charlie (C), Class Delta (D), and Class Echo (E).



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Class G airspace (uncontrolled) is that portion of airspace that has not been designated as Class A, Class B, Class C, Class D, or Class E airspace. Rules governing VFR flight have been adopted to assist the pilot in meeting the responsibility to see and avoid other aircraft.

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Regardless of weather conditions, an ATC clearance is required prior to operating within Class B airspace. Pilots should not request a clearance to operate within Class B airspace unless the requirements of 14 CFR Sections 91.131, 91.215, and 91.225 are met.

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Class G airspace (uncontrolled) is that portion of airspace that has not been designated as Class A, Class B, Class C, Class D, or Class E airspace. Rules governing VFR flight have been adopted to assist the pilot in meeting the responsibility to see and avoid other aircraft.

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To enter Class B airspace, all aircraft must meet the following requirements:
  • ATC clearance required to enter.
  • Establish and maintain two-way communication prior to entering and while in airspace.
  • Mode C transponder (within 30 nm, up to 10,000 feet msl)
  • Student pilot operations restricted.


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Class B airspace locations must include at least one primary airport around which the Class B airspace area is designated. General Design. There is no standard Class B design. Instead, the size and shape of the Class B airspace area will vary depending upon location-specific ATC operational and safety requirements.

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Once you are in the air, you must maintain communications with ATC while you are within Class B airspace. If you are taking off from a nontowered satellite airport within Class B airspace, establish two-way radio communications and get a squawk code from ATC as soon as possible after departure.

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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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For flights near airports in uncontrolled airspace that remain under 400' above the ground, prior authorization is not required. When flying in these areas, remote pilots and recreational flyers must be aware of and avoid traffic patterns and takeoff and landing areas.

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Class G airspace is the only form of uncontrolled airspace in the United States. It isn't charted, and it exists wherever Class A, B, C, D or E doesn't. But to truly understand Class G airspace, it helps to understand Class E airspace first.

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Class B Airspace Class B, or Bravo, airspace surrounds the nation's busiest and largest airports. The main airport that a Class B area has been designated for is considered the primary airport. There can also be other smaller airports within Class B, which are designated as secondary airports.

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(a) No person may operate an airplane under VFR in uncontrolled airspace when the ceiling is less than 1,000 feet unless flight visibility is at least 2 miles. (2) At night—1 mile.

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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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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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(c) No person may operate an aircraft in the airspace underlying a Class B airspace area designated for an airport or in a VFR corridor designated through such a Class B airspace area, at an indicated airspeed of more than 200 knots (230 mph).

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