Transportation officials explained that contractor L3Harris was modernizing an older aviation facility when an equipment error flooded network routers dating back to 2001. The resulting communication and radar blackouts triggered nearly 25,000 flight delays and over 9,000 cancellations on Friday alone, making it one of the largest disruptions since September 11, 2001. Ongoing operational friction led to more than 4,000 additional cancellations on Saturday morning, which accounted for approximately 14% of departing domestic flights. Authorities expect the air traffic control system to achieve full operational recovery by the end of Sunday, well in advance of Thanksgiving travel.
Key points
Federal authorities have officially ruled out foul play, cyberattacks, or artificial inte…: Federal authorities have officially ruled out foul play, cyberattacks, or artificial intelligence malfunctions as causes of the outage.
Investigators are specifically examining whether the operational collapse resulted from a…: Investigators are specifically examining whether the operational collapse resulted from an installer mistake or faulty routers built in 2001.
Airlines anticipate returning to full schedule integrity by the close of business on Sund…: Airlines anticipate returning to full schedule integrity by the close of business on Sunday ahead of peak holiday travel.
Sources checked by our analysis pipeline: 1
Friday's nationwide ground stop was declared after an error occurred while a contractor was updating an old Federal Aviation Administration telecommunication, Transportation Secretary Sean Duffy said Saturday.
L3Harris, a long time contractor for the
Federal Aviation Administration, was doing routine maintenance in at least one of FAA's remote location changing copper wire to fiber, he said. Duffy said the routers in these facilities were manufactured in 2001. These updates have been happening in American institutions for decades, Duffy said.
"Virtually every single institution in America has gone from copper to fiber, from analog to digital," Duffy said. "Just maybe the FAA is the last one to be doing this work because the investments haven't been made, but this is not complicated."
L3Harris did not immediately respond to NPR's request for comment.
Duffy said the FAA is still investigating the exact error that started flooding other routers in the air traffic control system.
"It's pretty straightforward work that we were doing yesterday at, again, a very remote location. So what we're working to determine was whether we had incompetence, meaning was…
Investigators are looking into technical upgrades after an infrastructure transition caused disruptions across the Federal Aviation Administration network late last week. Officials suspect hardware defects introduced during telecom modernization efforts triggered the technical breakdown. The incident raises fresh scrutiny over private vendors managing critical telecommunications systems for government aviation operations.
The privacy watchdog targeted a Facebook app mechanism that tapped Android device galleries to suggest post content, impacting roughly 20 million people nationwide. Watchdogs penalized the company's reliance on broad device permissions rather than explicit authorization, compounding the punishment due to an alleged lack of cooperation. This massive European action arrives amid intensified global scrutiny over the tech giant's historical handling of consumer information.
Telecommunications contractor L3Harris triggered a technical failure during maintenance work that flooded air traffic control systems and disrupted communication with aircraft. The resulting four-hour ground stop forced thousands of delays and cancellations across commercial and private aviation networks. Transportation officials are now leveraging the outage to press Congress for billions in funding to overhaul the country's aging infrastructure.