What is the maximum speed limit below Class B airspace?

The maximum speed limit below Class B airspace is 200 knots. This regulation is in place to ensure safe operations in areas with high-density air traffic. Class B airspace typically surrounds major airports where both commercial and general aviation aircraft operate. By setting a speed limit of 200 knots below this airspace, the FAA aims to reduce the risk of collisions and allow for effective air traffic management.

This speed limitation helps to ensure that aircraft have adequate time to react to traffic or airspace changes and facilitates smoother transitions into the more controlled environment of the Class B airspace above. Maintaining this speed helps to keep the flow of air traffic organized and manageable, which is critical in such busy regions.