Certified Flight Instructor (CFI) Practice Exam

What is typically the altitude of Class D airspace above the airport elevation?

1. 1,200 feet

2. 2,500 feet

3. 4,000 feet

4. 10,000 feet

The correct answer is: 2,500 feet

Class D airspace extends from the surface up to an altitude of 2,500 feet above the airport elevation. This type of controlled airspace is designated around an airport with an operational control tower and is typically depicted on aeronautical charts. Pilots operating within Class D airspace must be aware of the altitude limits to ensure safe separation from other aircraft. The extension of Class D airspace to 2,500 feet allows for adequate vertical separation from the surrounding airspace, facilitating both takeoffs and landings, while also managing the flow of traffic in the vicinity of busy airports. This structure ensures that all aircraft, including those transitioning through the area, can operate safely. Hence, 2,500 feet is the standard altitude limit for Class D airspace.