FAA ground stop ended; schedule recovery forecast for Nov. 15

The FAA’s network was back online, but passengers were still stuck. Friday, Nov. 13’s nationwide ground stop began during an upgrade to aging telecommunications lines, Transportation Secretary Sean Duffy said Saturday, according to NPR. The disruption left tens of thousands of travelers stranded across the U.S. on Saturday, even after the departure halt ended.

FAA Administrator Bryan Bedford said Saturday that schedule problems should be resolved by Sunday evening, Nov. 15, NPR reported. That was a recovery forecast, not confirmation that every flight would operate normally. Restoring the air traffic control network and restoring airline schedules were two different jobs.

For passengers whose trips fell apart, Bedford’s direction was straightforward: Contact the airline directly about a replacement flight or a full refund, according to NPR. Whether you accept that replacement matters; passengers who take an alternative flight cannot also receive a ticket refund, according to the BBC.

How a telecom upgrade triggered a nationwide ground stop

Duffy said contractor L3Harris was performing routine maintenance at at least one remote location, replacing copper telecommunications wire with fiber optics, NPR reported. During that work, a router began flooding other routers in the air traffic control system. Officials were still determining whether faulty equipment or an installation error caused the failure, and whether L3Harris bore responsibility.

The BBC reported a more specific account from Duffy: The router sent 1,000 connection attempts every four to five seconds. Bedford said 17 out of 22 air route traffic control centers experienced instability in voice and ground communications.

That did not mean those facilities completely lost service. According to CNN, Bedford said none of the affected centers went dark; facilities reported frequencies cutting in and out, requiring switches between primary and backup systems. The spread of the problem across multiple centers, without an immediate explanation, prompted the nationwide stop.

Finding the trouble took time. The BBC reported that the FAA needed 45 minutes to identify the location of the problem because maintenance was logged manually on paper. Officials had to search those records to establish where work was happening.

Bedford said there was no evidence of malicious activity or an AI-related issue, according to NPR. L3Harris said it was supporting the investigation and had completed more than 70% of the copper-to-fiber conversions.

The halt ended Friday; the disruption didn’t

The FAA announced the departure stop at 3:54 p.m. EST Friday and reopened the skies at 8:15 p.m. EST, according to the BBC. This was a halt to departures, not an instruction for every aircraft already airborne to stop flying.

Duffy said more than 3,000 flights in the air when the order was issued landed safely, according to The Associated Press. He said no one was in danger during the ground stop.

The schedule damage was substantial. NPR, citing FlightAware, reported nearly 25,000 delayed flights and over 9,000 cancellations Friday. By Saturday morning, Cirium had recorded more than 4,000 cancellations, representing 18% of flights departing the U.S., NPR reported.

Why does a temporary shutdown take so long to unwind? Aviation consultant Andrew Charlton, managing director of Aviation Advocacy, explained to The Associated Press that aircraft move through a succession of destinations rather than simply flying out and back. Disrupting one part of that sequence affects later flights, with long-haul international operations adding complications.

The consequences extended beyond U.S. airports. The BBC reported that U.S.-bound air traffic from Eurocontrol member states was suspended during the disruption, while Air Canada canceled flights between the U.S. and Canada.

Rebooking, refunds and the limits of assistance

A canceled trip brings two separate questions: How do you get where you’re going, and what money can you recover? The distinction between a ticket refund and additional compensation is important here.

According to the BBC, U.S. rules require passengers whose flights are canceled or significantly delayed to be offered alternative travel or a full fare refund if they choose not to fly. The report defines a significant delay as three hours for domestic flights and six hours for international routes.

The BBC reported that refunds for credit card purchases must be issued within seven business days of the request; tickets bought with another payment method have a 20-day deadline. Accepting a replacement flight means giving up the refund option for that journey.

Extra expenses are a different matter. The BBC reported that airlines do not have to pay compensation for air traffic control problems and that U.S. rules do not require meal vouchers or accommodation, although airlines may voluntarily provide support.

For passengers traveling from the UK to the U.S. or flying with a UK carrier, the BBC noted additional protections: UK law requires airlines to provide care during delays or cancellations regardless of the cause. If the airline cannot arrange assistance, passengers can arrange it themselves and claim the cost afterward. The UK Civil Aviation Authority advises keeping receipts and avoiding unnecessary spending.

An unfinished upgrade, with oversight under scrutiny

The work behind Friday’s failure is part of a much larger modernization effort. Congress approved $12.5 billion in July 2025 to update the aging air traffic control system, NPR reported. Duffy renewed his request for further investment Saturday.

How the work was managed is also drawing scrutiny. Professional Aviation Safety Specialists, the union representing FAA technicians, said the agency normally consults its technicians beforehand to assess upgrade or repair risks, but did not do so in this case, according to The Associated Press. That is the union’s account, not a finding of the investigation. Duffy also said officials would reconsider allowing upgrades during the day, the BBC reported.

Friday’s event was only the second nationwide ground stop since Sept. 11, 2001, according to NPR. The previous one, in 2023, involved a different system: NOTAM, which distributes hazard notices to pilots and airports. Investigators traced that outage to contract workers inadvertently deleting critical files.

For this weekend’s travelers, the immediate distinction remains simpler than the technical investigation: An operating air traffic network does not guarantee an operating itinerary. Bedford’s Sunday-evening recovery forecast offered a timetable, but his practical direction was to work with the airline on a new flight or refund. After a disruption this broad, getting the system running was only the first step toward getting people home.