Two-way radio communication must be established with the Air Traffic Control facility having jurisdiction over the area prior to entering which class airspace?

• A. Class B
• B. Class C
• C. Class D
• D. Class E

Answer: (B)

The rule being tested is how contacting ATC before entry works in different airspace. In Class C airspace, you must establish two-way radio communication with the controlling ATC facility before you enter and you must stay in contact while you’re inside. This setup is designed so ATC can monitor and manage traffic around busy airports, and you’ll typically be assigned a discrete transponder code as well.

Class B requires more than just two-way communication—it requires explicit ATC clearance to enter. Class D also requires two-way communication before entry but is associated with smaller airports. Class E generally does not require prior two-way communication to enter. So the situation described points to Class C as the airspace where establishing two-way radio communication beforehand is required.