FAA National Airspace System Resource — airports, runways, navaids, fixes, ATC facilities, airways, frequencies, ILS installations.
The FAA's authoritative dataset for the US National Airspace System. Published on the 28-day AIRAC cycle, NASR covers airports, runways, NAVAIDs, fixes, airspace, ATC facilities, ILS, airways, departure and arrival procedures, holding patterns, and frequencies.