National Airspace System (NAS)

The National Airspace System (NAS) is the organized network of airspace, navigation facilities, airports, and information systems managed by the Federal Aviation Administration (FAA). It ensures the safe, efficient movement of civilian and military aircraft across the United States. The NAS includes air traffic control services, weather information, and safety standards that coordinate flights and prevent collisions. Think of it as an intricate, air-based transportation infrastructure that keeps all aircraft moving smoothly, safely, and reliably within the country’s skies, supporting commercial flights, cargo transport, military operations, and private flying.