What type of special use airspace requires permission from the using agency to operate an aircraft?

Prohibited areas are designated airspace where the flight of aircraft is completely prohibited without special permission from the designated using agency. These areas are established for security or national welfare reasons, often surrounding sensitive military installations or other critical facilities. The intent of a prohibited area is to prevent all aircraft operations, ensuring safety and security.

In contrast, restricted airspace does require permission, but restricts specific types of operations due to the presence of potential hazards like military exercises or live-fire training. Alert areas notify pilots of high traffic or unusual flight activities, but do not require permission to enter. Controlled airspace is a regulatory classification that ensures pilots follow specific rules and communication protocols but does not restrict entry nor requires authorization for navigation as a prohibited area does. Understanding these distinctions is crucial for navigating airspace effectively while complying with regulations.