Chapter 2: Airspace Classification, Operating Requirements, and Flight Restrictions effective altitude, time and weather conditions of operation, the controlling agency, and the chart  panel location. On National Aeronautical Charting Group (NACG) en route charts, this information is  available on one of the end panels. Special use airspace usually consists of: Prohibited areas contain airspace of  defined dimensions within which the  flight of aircraft is prohibited. Such  areas are established for security or  other reasons associated with the national welfare. These areas are published in the Federal Register and  are depicted on aeronautical charts.  The area is charted as a “P” followed by  a number (e.g., P-40). Examples of  prohibited areas include Camp David  and the National Mall in Washington,  D.C., where the White House and the  Congressional buildings are located.  [Figure 2-2] Restricted Areas Prohibited Areas Figure 2-2.  An example of a prohibited area, P-40 around Camp David. Figure 2-3.  Restricted areas on a sectional chart. Remote Pilot – Small Unmanned Aircraft Systems Study Guide  7  Restricted areas are areas where operations are hazardous to nonparticipating aircraft and contain airspace within which the flight of aircraft,  while not wholly prohibited, is subject to  restrictions. Activities within these areas  must be confined because of their nature,  or limitations may be imposed upon  aircraft operations that are not a part of  those activities, or both. Restricted areas  denote the existence of unusual, often  invisible, hazards to aircraft (e.g., artillery  firing, aerial gunnery, or guided missiles).  Penetration of restricted areas without  authorization from the using or controlling agency may be extremely hazardous to the aircraft.  • Prohibited areas • Restricted areas • Warning areas • Military operation areas (MOAs) • Alert areas • Controlled firing areas (CFAs)