The FAA’s nationwide ground stop ended Friday evening, November 13, but the recovery is stretching across the weekend. The Associated Press reported more than 5,100 cancellations within, into or out of the United States on Saturday, citing FlightAware. Aircraft can depart again, but airlines are still rebuilding schedules disrupted by the communications failure.

The FAA confirmed that communication problems affected multiple Air Route Traffic Control Centers. The departure halt lasted more than four hours, with Transportation Secretary Sean Duffy announcing that the airspace reopened at 8:15 p.m. Eastern on Friday.

For business aviation, the distinction matters. An available aircraft and a flexible itinerary still depend on a functioning air traffic control network. The reopening removed the nationwide restriction; it did not guarantee that every planned departure could operate on time.

How much disruption did the ground stop cause?

Reuters’ Saturday recovery report put Friday’s cancellations at nearly 10,000, with more than 7,000 other flights delayed. Those reported totals make the scale substantially larger than an early headline of 10,000 disrupted flights, but cancellations and delays should remain separate measures.

The Saturday cancellation figure is a reporting snapshot, not a final weekend total. Flight-tracking counts change as airlines revise their schedules, and the figures should not be treated as a verified count of business jet movements or as proof that every affected flight had the same cause.

FAA Administrator Bryan Bedford said airline schedules were expected to recover by the end of Sunday, according to AP. That was an outlook, rather than a guarantee for any individual flight.

A router problem during telecommunications work

At Saturday’s DOT briefing, Duffy said officials believed the failure began during work at a remote FAA location to replace copper telecommunications lines with fiber. He identified L3Harris as the contractor and said a router involved in the change flooded other routers with connection attempts, disrupting aircraft communications and radar feeds.

The exact fault remained under investigation. Duffy said officials had not established whether installation error or faulty equipment was responsible. L3Harris told AP it was assisting the FAA’s investigation. The preliminary explanation should not be presented as a completed finding of contractor negligence.

Duffy also said the agency did not believe a cyberattack was involved. In Friday’s briefing, he stressed that the system had not lost all radar or telecommunications; intermittent instability prompted the precautionary stop. Aircraft already airborne continued landing under established procedures.

Why the cancellations continue after reopening

Delta’s operational updates describe the practical recovery problem: aircraft and flight crews need to be repositioned. A flight that never leaves its origin can also leave the next departure without its aircraft. Restoring communications allows the network to operate again, but it cannot instantly put all those resources where the timetable expects them.

In its latest update at 5:15 p.m. Eastern on Saturday, Delta encouraged customers with flexible plans to move travel to Monday, November 16, or later. The airline said flexible rebooking remained available for travel planned November 13–15 and urged passengers traveling over the weekend to check their flight status and allow extra time.

That advice is a useful counterweight to the broad Sunday recovery forecast. Travelers should make decisions from their own flight’s status and airline instructions, rather than assume that the lifting of the FAA stop means the disruption is over.

What private flyers and flight departments should check

The operational lesson for private aviation is straightforward: confirm the complete trip, not just the aircraft booking. Ask the operator whether the aircraft and crew are in position, whether the proposed departure remains achievable, and whether the destination and any alternate can support the revised arrival.

A smaller airport may provide useful flexibility, but it does not bypass a nationwide air traffic restriction. Nor do airline cancellation figures establish that charter demand, availability or prices have changed by a particular amount. Those would require separate operator or market data.

For current restrictions, flight departments should consult the FAA’s National Airspace System status and their normal dispatch and ATC channels. Passengers should confirm timing directly with their operator before leaving for the airport.

The immediate recovery test is whether airlines can get crews, aircraft and passengers back onto workable schedules. The longer-term question is how a telecommunications change at one location was able to disrupt operations across the country. Saturday’s preliminary account explains the suspected mechanism; the investigation still needs to establish precisely what failed and how a repeat can be prevented.

Reporting note: Published November 14, 2026. Includes Delta’s 5:15 p.m. Eastern update. Flight counts are attributed snapshots and may be revised; they are not a live flight-status feed.

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