Regulations

Class B Airspace

Definition

Controlled airspace surrounding the busiest airports requiring ATC clearance for entry. Shaped like an upside-down wedding cake, Class B has specific VFR visibility and cloud clearance requirements.

Related Terms

Airspace Classification

The division of airspace into classes (A through G) with different rules for ent...

ATC Clearance

An authorization by ATC for an aircraft to proceed under specified conditions. C...

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