Which airspace requires a 2-way radio and an altitude reporting transponder, has a 30 NM Mode C veil, and entry requires ATC clearance with UAS operations prohibited?

Which airspace requires a 2-way radio and an altitude reporting transponder, has a 30 NM Mode C veil, and entry requires ATC clearance with UAS operations prohibited?

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

Answer: (C)

Class B airspace is the most restrictive type around major airports. It features a 30 nautical mile Mode C veil, which means altitude reporting is required in that outer region to help ATC keep track of traffic. To operate inside this airspace, you must have two-way radio communication with ATC and be cleared into the airspace; aircraft must also be equipped with an altitude-encoding transponder (Mode C) so ATC can see their altitude. In Class B, UAS operations are generally not permitted without explicit ATC authorization. Because the scenario describes all of these elements—the two-way radio requirement, the altitude-reporting transponder, the 30 NM Mode C veil, and ATC clearance to enter (with UAS restricted)—it points to Class B airspace as the correct context.

Class B airspace is the most restrictive type around major airports. It features a 30 nautical mile Mode C veil, which means altitude reporting is required in that outer region to help ATC keep track of traffic. To operate inside this airspace, you must have two-way radio communication with ATC and be cleared into the airspace; aircraft must also be equipped with an altitude-encoding transponder (Mode C) so ATC can see their altitude. In Class B, UAS operations are generally not permitted without explicit ATC authorization. Because the scenario describes all of these elements—the two-way radio requirement, the altitude-reporting transponder, the 30 NM Mode C veil, and ATC clearance to enter (with UAS restricted)—it points to Class B airspace as the correct context.