FAA Ground School Practice Test

In which type of airspace are VFR flights prohibited?

1. Class B

2. Class C

3. Class A

4. Class D

The correct answer is: Class A

VFR (Visual Flight Rules) flights are prohibited in Class A airspace. This airspace is designated for high-altitude flying, typically from 18,000 feet MSL (Mean Sea Level) up to 60,000 feet. Class A airspace is controlled airspace where all flights must operate under IFR (Instrument Flight Rules) regardless of the flight's visibility conditions. This requirement is primarily because of the complexities and density of traffic at these altitudes, as well as the inability to maintain visual reference with the ground due to the high altitudes involved. In contrast, Class B, Class C, and Class D airspaces accommodate VFR operations, provided that pilots comply with specific communication and operational requirements. Class B is for the busiest airports, with significant traffic control, while Class C and Class D airspaces contain less traffic and allow for more flexibility for VFR flights, making them suitable for pilots flying under visual conditions.