Which class of airspace generally extends upward to 10,000 feet MSL?

Class B airspace is designed to provide a safe and controlled environment for air traffic in busy terminal areas, primarily around major airports. It typically extends from the surface up to 10,000 feet above mean sea level (MSL). This airspace is characterized by more stringent rules, requiring pilots to have specific qualifications, such as an endorsement for operating in this airspace and a transponder with altitude reporting capabilities.

The configuration of Class B airspace often resembles an upside-down wedding cake, with different layers or shelves extending to varying altitudes depending on the specific airport and surrounding area congestion. This vertical structure is aimed at managing the high volume of traffic, particularly within the vicinity of major airports, ensuring safe separation between arriving and departing flights, as well as between those transiting through the area.

Understanding the characteristics and requirements of Class B airspace is crucial for pilots, especially when planning flights in or around busy urban centers. Recognizing the altitude limits, together with the expected communication protocols and equipment needed to operate in this airspace, is essential for maintaining safety and compliance in aviation.