Plain English Meaning

A long-running FAA project to redraw and update how U.S. airspace is laid out and used, so traffic flows more smoothly and airports can handle more flights.

Full Definition

An FAA initiative to review and modify the structure of the United States National Airspace System, including routes, procedures, and airspace classifications, in order to increase capacity, improve efficiency, and reduce delays. Under NAR, the FAA develops new arrival, departure, and en route procedures — many of them RNAV-based — to make better use of available airspace.

Context Anchor

Seen in FAA discussions of RNAV departures, route changes, and airspace modernization around busy .