What is the normal vertical limit of Class C airspace above the primary airport?

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Multiple Choice

What is the normal vertical limit of Class C airspace above the primary airport?

Explanation:
Class C airspace around a primary airport is designed to protect IFR traffic and has two tiers: an inner core from the surface up to 4,000 feet above the airport, and an outer shelf from about 1,200 feet AGL up to 4,000 feet above the airport. The top of Class C is consistently 4,000 feet above the airport, so airspace above that level is no longer Class C. That’s why the normal vertical limit is 4,000 feet AGL—the ceiling that defines the extent of Class C around the primary airport.

Class C airspace around a primary airport is designed to protect IFR traffic and has two tiers: an inner core from the surface up to 4,000 feet above the airport, and an outer shelf from about 1,200 feet AGL up to 4,000 feet above the airport. The top of Class C is consistently 4,000 feet above the airport, so airspace above that level is no longer Class C. That’s why the normal vertical limit is 4,000 feet AGL—the ceiling that defines the extent of Class C around the primary airport.

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