What are the dimensions of Class C airspace?

Class C airspace is structured to provide controlled airspace around airports with a significant volume of traffic. Understanding its dimensions is vital for pilots flying in and near controlled airspace.

Class C airspace generally has two components: a core area and an outer shelf. The core typically extends 5 nautical miles (nm) from the airport's center and goes from the surface up to 4,000 feet Above Ground Level (AGL). This is designed to facilitate the safe and efficient movement of arriving and departing aircraft close to the airport.

The outer shelf of Class C airspace extends from 10 nm out from the airport and typically goes from 1,200 feet AGL up to 4,000 feet AGL. This structure allows for increased traffic at various altitudes, offering a buffer for both departing and arriving aircraft and providing services to aircraft transitioning through this airspace without impacting the immediate airport operations.

Therefore, the correct option includes the specifications of both the core and the outer shelf, illustrating that Class C airspace encompasses both dimensions listed in the other choices.