To operate in Class C airspace, you must do which before entry?

• A. File a flight plan with ATC
• B. Obtain a weather briefing
• C. Establish two-way radio communication with ATC
• D. Call the tower after entry

Answer: (C)

Two-way radio communication with ATC must be established before entering Class C airspace. This ensures ATC can see you on radar, provide you with a beacon code, and give you any needed instructions or clearances to safely integrate with other traffic around the primary airport. In Class C, you’re expected to maintain that communication while operating inside the airspace, and you’ll be assigned a discrete transponder code for ATC to track you. While a functioning transponder with altitude reporting is required within Class C, the key action before entry is contacting ATC and establishing two-way communication. Filing a flight plan or obtaining a weather briefing isn’t required solely to enter Class C, and you shouldn’t wait to call the tower after entry—communication must be established beforehand.