National Airspace System

The National Airspace System (NAS) is the network of airways, airports, navigation systems, regulations, and organizations that enable safe and efficient air travel across the United States. It includes everything from radar and air traffic control to flight routes and safety procedures, ensuring aircraft can operate smoothly, avoid collisions, and reach destinations securely. Managed primarily by the Federal Aviation Administration (FAA), the NAS coordinates commercial, cargo, and private flights, maintaining order in a busy, complex environment that supports millions of passengers and goods annually.