FAA Ground School Practice Test

Before entering which class of airspace must two-way radio communication be established with the air traffic control facility?

1. Class A

2. Class B

3. Class C

4. Class D

The correct answer is: Class C

Two-way radio communication must be established with the air traffic control facility before entering Class C airspace. This requirement is in place to ensure that aircraft operating within this airspace can maintain communication with ATC, which helps to manage traffic and enhances safety. Class C airspace typically surrounds airports with a significant level of air traffic, where ATC provides services to both IFR (Instrument Flight Rules) and VFR (Visual Flight Rules) traffic. Establishing communication allows pilots to receive crucial information, such as traffic advisories and instructions, which are essential for navigating in busy airspace. In the context of the other classes of airspace, Class A airspace, which is generally for high-altitude operations, also requires two-way communication. However, its altitude requirements are considerably higher than those of Class C. Class B airspace, located around major airports, mandates two-way communication as well but is more restrictive than Class C. Class D airspace typically requires communication with the local tower but does not necessitate the same level of radar service as Class C. Thus, Class C is distinct in that it emphasizes the importance of maintaining communication for safety and operational effectiveness within its busy airspace structure.