(c)
ATC may assign altitudes to VFR aircraft that do not conform to 14 CFR 91.159. When the altitude assignment is no longer needed for separation or when leaving Class B Airspace, the instruction will be broadcast, "Resume Appropriate VFR Altitudes." Pilots must return to an altitude that conforms to 14 CFR 91.159 as soon as possible.

(5) Class B Airspace is established in the following
areas: Atlanta, GA Baltimore, MD Boston, MA Charlotte, NC Chicago, IL Cincinnati, OH Cleveland, OH Dallas, TX Denver, CO Detroit, MI Ft. Worth, TX Honolulu, HI Houston, TX Kansas City, MO Las Vegas, NV Los Angeles, CA Memphis, TN Miami, FL Minneapolis, MN New Orleans, LA New York, NY Orlando, FL Philadelphia, PA Pittsburgh, PA Phoenix, AZ Salt Lake City, UT St. Louis, MO San Diego, CA San Francisco, CA Seattle, WA Tampa, FL Washington, D.C.
(SPEC/ENR 1.4 -4, 5, 6)
g. CLASS C AIRSPACE - Airspace surrounding designated airports where ATC provides radar vectoring and sequencing on a full time basis for all IFR and VFR aircraft. Class C Airspace consists of controlled airspace extending upwards from the surface or higher to specified altitudes, within which all aircraft are subject to the operating rules and equipment requirements in 14 CFR Part
91. (See FAA AIRSPACE CLASSIFICATION Table in this section.) (SPEC/ENR 1.4 -5, 6, 7)

(1)
Class C Airspace has a basic design with minor site specific variations.

(a)
The design consists of two concentric circles both centered on the primary airport. The inner circle has a radius of 5 NM and the outer circle has a radius of 10 NM.

(b)
The airspace of the inner circle extends from the surface of the primary airport to 4000’ AGL. The airspace area between 5 and 10 NM ring begins at 1200’ AGL and extends to the same altitude cap as the inner circle.

(c)
The Class C Airspace outer area normally has a radius of 20 NM from the primary airport. The outer area extends from the lower limits of radio or radar coverage up to the ceiling of the Approach Control's delegated airspace.

(2) EQUIPMENT REQUIRED -

(a)
Operable two-way radio capable of communicating with ATC on appropriate frequency.

(b)
Operable 4096 coded radar beacon transponder (Mode 3/A) operated within and above all Class C Airspace up to 10,000’ MSL.

(c)
Operable automatic pressure altitude reporting (Mode C).

(3) PROCEDURES -

(a)
ARRIVALS AND OVERFLIGHTS - Two-way radio communications must be established with the ATC facility having jurisdiction over the Class C Airspace prior to entering and thereafter as instructed by ATC.

(b)
DEPARTURES - Primary or satellite with an operating control tower, two-way radio communications must be established and maintained with the control tower and thereafter as instructed by ATC. For satellite airports without an operating control tower, two-way radio communications must be established as soon as possible after departure with the ATC facility having jurisdiction over the Class C Airspace and thereafter as instructed by ATC.
　
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