What type of airspace is Class B airspace?

Class B airspace is defined as controlled airspace that requires an air traffic control (ATC) clearance for entry. This type of airspace is typically found around the busiest airports, where a high volume of traffic—both large commercial airliners and smaller general aviation aircraft—interacts.

In Class B airspace, the ATC gives clearances to maintain safe separation between aircraft, thereby managing the complex and dense traffic patterns that are characteristic of major airports. The requirement for ATC clearance ensures that pilots are aware of their responsibilities and the conditions in this airspace, enhancing safety and efficiency.

Additionally, operations within Class B airspace are subject to specific rules and requirements, such as minimum visibility and distance from clouds, which can vary depending on the class of airspace. Pilots flying in this airspace must typically have specific training and certification, further emphasizing the controlled nature of Class B airspace.