Restricted Area

Special use airspace identified by the letter "R" followed by a number on sectional charts, where flight is restricted because of hazardous activities such as artillery firing, aerial gunnery, or guided missile testing. Entry into an active restricted area without authorization from the controlling agency is prohibited and could result in a hazard to the aircraft. Pilots may receive permission to transit restricted areas when they are not active, either through ATC clearance or by contacting the controlling agency directly.