What is the maximum airspeed under Class B airspace?

In Class B airspace, the maximum airspeed for aircraft operating at or below 10,000 feet MSL is 200 knots. This regulation is in place to maintain safety and efficiency in what is often densely populated and busy airspace around major airports.

The 200-knot limit helps to ensure that aircraft can operate safely in close proximity to one another, particularly in a structure where air traffic is being tightly controlled. The lower speed limit also allows for better handling characteristics and provides pilots more time to react to instructions from air traffic control, which is crucial in busy airspace settings where communications and maneuvers may need to occur rapidly.

The other provided airspeed options exceed this 200-knot limit, making them unsuitable for operations within Class B airspace when the aircraft is at or below 10,000 feet MSL. Each of those speeds could lead to increased complexity and risk in managing air traffic in such a critical area. Thus, the 200-knot speed limit in Class B airspace is a critical aspect of ensuring safety and efficiency within this airspace class.