Measuring Resiliency for Withstanding and Rapid Recovery of NAS Events

The United States has the largest, busiest, most complex airspace system in the world. Operating the National Airspace System (NAS) requires a vast and unique infrastructure framework that includes facilities; network communications; terrestrial and space-based navigation; and surveillance equipment. This infrastructure is located throughout the United States for the Federal Aviation Association (FAA) to manage air traffic through all phases of flight. These resources help ensure that Air Traffic Management (ATM) service to the public continues 365 days a year, 24 hours a day, seven days a week, under a wide-ranging set of circumstances, including unplanned system failures.