Airspace over United States territory located within the North American continent between Canada and Mexico, including adjacent territorial waters outward to about boundaries of oceanic control areas (CTA)/Flight Information Regions (FIR).

Listed in the Pilot/Controller Glossary as a cross-reference to NATIONAL BEACON CODE ALLOCATION PLAN AIRSPACE (NBCAP), whose text is shown above.

Source FAA Pilot/Controller Glossary↗ · checked 2026-08-25