What is the height of Class B airspace above mean sea level?

• A. Up to 5,000 feet MSL
• B. Typically from the surface up to 10,000 feet MSL
• C. From 10,000 feet to 18,000 feet MSL
• D. Up to 15,000 feet MSL

Answer: (B)

Class B airspace is designed to manage traffic around busy airports and generally extends vertically from the surface up to an altitude that is typically around 10,000 feet above mean sea level (MSL). The dimensions of Class B airspace can vary depending on the specific airport and its operational needs, but the standard configuration usually includes a lower limit of the surface and an upper limit of 10,000 feet MSL. This structure helps to ensure safe separation between different categories of aircraft operating in and around major airport environments, where there is higher traffic volume. Knowing this height is essential for pilots to understand where they can operate and what airspace they might encounter.