Nationwide FAA Computer Outage Grounds All U.S. Flights, Causing Widespread Delays

A critical Federal Aviation Administration (FAA) computer system outage on August 4, 2026, led to the grounding of all flights across the United States, causing significant disruptions, delays, and cancellations at airports nationwide. The FAA reported that its Notice to Air Missions (NOTAM) system had failed and technicians were working to restore it, with operations across the National Airspace System affected.