Within 30 miles of a Class B primary airport, Class B airspace extends from the surface up to what altitude?

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Multiple Choice

Within 30 miles of a Class B primary airport, Class B airspace extends from the surface up to what altitude?

Explanation:
Class B around a major airport is built in stacked shelves, all designed to keep traffic separated from outside operations. The ceiling of that Class B within roughly 30 miles of the primary airport is generally 10,000 feet MSL. In other words, from the surface (or from whatever base a given shelf starts) up to 10,000 feet MSL is Class B, and above that is Class E until you reach 18,000 MSL, where Class A begins. So the ceiling you’ll encounter within 30 miles is 10,000 feet MSL, which is why that choice is correct. Remember, entering Class B requires ATC clearance and you must meet the applicable VFR or IFR requirements; above 10,000 feet you’d be into different airspace rules.

Class B around a major airport is built in stacked shelves, all designed to keep traffic separated from outside operations. The ceiling of that Class B within roughly 30 miles of the primary airport is generally 10,000 feet MSL. In other words, from the surface (or from whatever base a given shelf starts) up to 10,000 feet MSL is Class B, and above that is Class E until you reach 18,000 MSL, where Class A begins. So the ceiling you’ll encounter within 30 miles is 10,000 feet MSL, which is why that choice is correct. Remember, entering Class B requires ATC clearance and you must meet the applicable VFR or IFR requirements; above 10,000 feet you’d be into different airspace rules.

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