When is "special VFR" permitted?

• A. During thunderstorms
• B. When visibility is less than minimum VFR requirements
• C. In class A airspace
• D. When conducting instrument approaches

Answer: (B)

"Special VFR" is permitted when visibility is less than minimum VFR (Visual Flight Rules) requirements, allowing pilots to operate an aircraft in controlled airspace under specific circumstances. This permission is typically granted in Class B, C, D, and E airspaces when pilots can maintain visual reference to the ground and stay clear of clouds, despite the visibility being below standard VFR minimums. To obtain special VFR clearance, pilots must ensure they can navigate safely while remaining in contact with air traffic control.

The other options highlight situations where special VFR is not applicable. For instance, operating during thunderstorms poses significant hazards that typically require adherence to IFR (Instrument Flight Rules) rather than granting special VFR. Similarly, Class A airspace is exclusively for IFR operations, while special VFR clearance specifically does not apply there. Conducting instrument approaches requires adherence to IFR regulations, further distinguishing it from the circumstances under which special VFR is allowed.