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Class B Airspace

Description:
Class B airspace is used to control the flow traffic around major airports.

VFR Sectional:
The airspace is charted on a VFR Sectional with a series of blue lines. Within these blue lines the floor and the ceiling of the Class B airspace is defined.

Dimensions:
The lateral boundaries of Class B airspace are individually tailored to facilitate arriving and departing traffic operating under IFR. Class B airspace extends from the surface to generally 10,000 feet MSL. In Denver and Salt Lake City the ceiling is at 12,000 feet MSL while in Phoenix the ceiling is at 9,000 feet MSL. Always consult your map for the most current floor and ceiling information.


Clearance:
Aircraft must establish two-way radio communication with ATC and obtain a clearance to enter the airspace.

Transponder:
All aircraft operating inside or within 30 NM of Class B airspace are required to have a transponder with Mode C. The 30 NM Mode C Veil is denoted on VFR charts by a thin magenta line.

Weather:
VFR traffic must remain clear of clouds and maintain 3 SM of visibility while operating within Class B airspace.

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