~45,000 daily US flights halted by ATC communications failure
USA - On Friday afternoon, November 13, 2026, the Federal Aviation Administration ordered a nationwide ground stop on all departing flights across the United States. As of approximately 4:00 p.m. EST, takeoffs were halted “due to extraordinary circumstances and for reasons of safety.” The ground stop lasted about 6 hours.
Planes already airborne were permitted to continue and land; no new departures were allowed. International arrivals are being handled case by case.
Today’s event stems from technical communications problems, not an external security threat. Still, the scale—touching the entire national airspace system that routinely handles more than 44,000–45,000 flights and millions of passengers daily—makes the disruption feel exceptional.
The FAA and Transportation Secretary Sean Duffy attributed the action to a communication issue affecting all Air Route Traffic Control Centers—the regional facilities that manage en-route traffic between airports. Officials later described it as a temporary telecommunications outage.
Controllers lost radio frequencies and automation support in multiple centers, including reports involving Chicago, New York, and Boston areas. Homeland Security Secretary Markwayne Mullin stated there was no indication of a “nefarious act” or cyberattack; it was characterized as a telecommunications outage. President Trump was briefed.
This is only the second nationwide ground stop of its kind since the September 11, 2001 attacks. The previous one occurred in January 2023, when a failure in the Notice to Airmen (NOTAM) system briefly halted domestic departures. The 9/11 connection remains highly tenuous: that grounding responded to a coordinated terrorist assault on the aviation system itself.
Flight-tracking data illustrated the immediate chaos. Roughly 3,100 aircraft were already airborne and bound for U.S. airports when the order took effect. Within hours, thousands of delays and hundreds of cancellations accumulated; figures climbed rapidly into the several-thousand range for delays alone.
Major hubs from coast to coast—Chicago O’Hare and Midway, New York-area airports, Los Angeles, Las Vegas, and others—saw operations freeze. Passengers faced stranded flights, long waits, and cascading schedule disruptions.
Because the U.S. aviation network is a global hub, the effects radiate far beyond American borders. International carriers relying on U.S. connections, cargo movements, and connecting passengers worldwide face delays or diversions.
Travelers with onward tickets, cruise connections, or time-sensitive itineraries are among the first casualties. Recovery timelines depend on how long the outage lasts; even a few hours of ground stop can produce multi-day ripple effects as aircraft, crews, and passengers fall out of position.
The episode also highlights long-standing concerns about the age and resilience of the nation’s air traffic control infrastructure. Officials have been seeking substantial additional funding for modernization—Secretary Duffy had pressed Congress earlier the same day for tens of billions more—precisely because legacy systems remain vulnerable to the kind of failure that forced this extreme measure.
Radio-frequency and automation losses at the centers that keep aircraft safely separated leave little margin for continued operations.
As of late afternoon EST, technicians were investigating and no firm restart time had been announced. Every flight was reported accounted for, and safety remained the overriding priority. For a system that moves the equivalent of a small city’s population through the sky every day, the sudden silence on the runways underscores both the fragility of critical communications links and the extraordinary rarity of a full national ground stop.
Travelers should monitor airline notifications closely; the full human and economic cost will become clearer only after operations resume.
Sources
[WIRED](https://www.wired.com/story/faa-grounds-all-us-flights-until-further-notice/)
[AP News](https://apnews.com/live/ground-stop-aviation-flights-news-updates-11-13-2026)
[Financial Times](https://www.ft.com/content/c9b119ff-d1da-46a7-b2b3-4ad0544fff6b?syn-25a6b1a6=1)
[CBS News](https://www.cbsnews.com/news/faa-issues-nationwide-ground-stop/)
Written by Grok as directed and edited for McColl Magazine Public Safety
