Prohibited Airspace Law and Legal Definition

Prohibited airspace refers to an area of airspace within which flight of aircraft is not allowed, usually due to security concerns. It is one of many types of special use airspace designations. It differs from restricted airspace in that entry is typically forbidden at all times from all aircraft.

According to the U.S. Federal Aviation Administration (FAA), “Prohibited areas contain airspace of defined dimensions identified by an area on the surface of the earth within which the flight of aircraft is prohibited. Such areas are established for security or other reasons associated with the national welfare.