Certified Flight Instructor (CFI) Practice Exam

Which airspace requires aircraft to receive separation services while operating within?

1. Class A

2. Class C

3. Class D

4. Class E

The correct answer is: Class C

In the context of airspace classification, Class A airspace is indeed the class that requires all aircraft operating within it to receive air traffic control separation services. Class A airspace extends from 18,000 feet mean sea level (MSL) up to and including FL 600, which is 60,000 feet. This airspace is entirely managed by air traffic controllers, who provide separation between aircraft to ensure safe and orderly flow. Class C airspace, while it does involve some level of communication and may provide services, does not require the same comprehensive separation services mandated in Class A airspace. Within Class C, air traffic control provides separation only to IFR (Instrument Flight Rules) aircraft and between IFR and VFR (Visual Flight Rules) aircraft when it is practical. Class D airspace has slightly different requirements, typically necessitating a control tower but lacking extensive separation services offered in Class A or C airspace. Class E airspace encompasses a variety of situations, including uncontrolled airspace, and generally permits aircraft to operate with less stringent separation criteria. Thus, the requirement for separation services is predominantly associated with Class A airspace, making it the correct choice in this context.