The contractor blamed by Transportation Secretary Sean Duffy for Friday’s nationwide ground stop has finally answered back, giving the air travel mess a second act. L3Harris issued a statement after Duffy said investigators were examining whether the company made an error or whether a faulty router caused a failure in the nation’s air traffic control system. The disruption reportedly left over 1 million people stranded. As The Gateway Pundit reported, the dispute centers on a communications upgrade that went badly wrong.
During a Saturday briefing at 10:30 a.m. ET, Duffy provided more details about the failure. He said workers were upgrading communication routers at a remote location when the system went down. The work involved moving from legacy copper connections to fiber, and officials are now trying to determine whether the trouble came from a bad installation or defective equipment. Duffy put the question bluntly: “What we’re working to determine is whether we had incompetence from L3 Harris…Or did they install a faulty router,” Duffy added.
According to the briefing, the problem emerged when a router being replaced began flooding other routers in the network. That turned an infrastructure upgrade into a nationwide aviation headache. Nothing says modern communications quite like a component replacement that leaves passengers staring at delayed travel plans and wondering whether the airport has become a very expensive waiting room.
L3Harris did not accept the blame in its response to Fox News. The company said it had been “modernizing the communications infrastructure supporting the National Airspace System in close coordination with the FAA,” and that it had “completed more than 70% of the planned airspace communications conversion from legacy copper wires to a fiber optic system.” That progress report describes a large modernization effort, but it does not answer what happened during Friday’s failure.
The company also said, “We are supporting the FAA in its investigation to understand the conditions that led to the Nov. 13 ground stop of our nation’s air travel,” and added, “L3Harris takes the nationwide ground stop and its impact on travelers, airlines, and air traffic operations seriously.” It is a careful corporate statement, polished enough to avoid admitting fault while making clear that the company intends to cooperate with investigators.
Fox News shared Duffy’s description of the investigation and the possible router failure:
BREAKING: Transportation Secretary Sean Duffy says investigators are examining whether a contractor error or a faulty router caused a failure in the nation's air traffic control system.
Duffy says the problem emerged during an upgrade from copper to fiber, when a router being… pic.twitter.com/0jpH52PzMU
— Fox News (@FoxNews) November 14, 2026
L3Harris is not a small communications supplier. According to the company’s website, it provides advanced fuzing and ordnance systems to the U.S. Department of War, develops advanced weapons and electronic systems for military applications, and serves as one of the largest suppliers of tactical radios and other communications equipment to the U.S. military. That background makes the air traffic control dispute especially serious. Equipment problems are bad enough anywhere, but failures in systems supporting nationwide air travel create consequences for airlines, workers, and passengers all at once.
For travelers, the distinction between contractor error and hardware failure is not academic. They need air traffic operations to work, not a debate over whether the person installing the router or the router itself deserves the blame. The FAA investigation is now focused on establishing what caused the outage. L3Harris says it is cooperating, while Duffy has publicly raised the possibility of contractor incompetence or equipment failure. A nationwide ground stop is not a minor technical hiccup, so the final explanation needs to be considerably more precise than a corporate promise to take the incident seriously.
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