How far does Class B airspace typically extend horizontally from the primary airport?

Class B airspace typically extends horizontally from the primary airport up to 30 nautical miles. This airspace is designed to contain all instrument approaches and departures for the airport. The 30-nautical-mile radius ensures that aircraft operating in busy airspace, often around major airports, are adequately managed and can operate safely amidst high traffic levels. Within this area, pilots are required to maintain specific communications with air traffic control, which facilitates the safe and organized flow of air traffic.

The dimensions of Class B airspace vary somewhat depending on different factors, including the location of the airports, but the standard maximum horizontal limit from the center of the primary airport is indeed 30 nautical miles. Understanding this infrastructure helps pilots prepare for operations around congested airports, allowing for the maintenance of safety protocols and efficient traffic management.