Question

In a Terminal Control Area, as you go higher up in altitude, does the radius of the controlled airspace increase or decrease? Average radius at 18,000 ASL?

A) Increase
B) Decrease
C) Remain Constant
D) Not Determined

Answer 1

As you go higher up in altitude in a Terminal Control Area, the radius of the controlled airspace increases to accommodate spreading flight paths, which means the correct answer is A) Increase.

Step-by-step explanation:

In a Terminal Control Area, the controlled airspace design typically features layers that resemble an upside-down wedding cake, with each layer being wider than the one below it. As such, as you go higher up in altitude, the radius of the controlled airspace tends to increase. This design accommodates the need for more airspace as aircraft gain altitude and spread out along various flight paths. Answering the question, as you go higher up in altitude in a Terminal Control Area, the radius of the controlled airspace increases, which corresponds to option A) Increase. It is important to note that specific dimensions, such as the average radius at 18,000 feet above sea level (ASL), can vary by location and are typically detailed in aeronautical charts and regulations provided by the governing aviation body of the region.