Transportation Secretary Sean Duffy has now revealed what triggered the nationwide FAA ground stop that brought departures across America to a halt and stranded travelers from coast to coast.

The answer was not a foreign attack, an artificial intelligence failure, or the separate Microsoft outage that had rattled businesses only a day earlier.

It was a breakdown inside the aging air traffic control network, and officials say one piece of equipment began hammering the system so badly that the safest option was to stop departures nationwide.

By Saturday morning, Duffy said planes were moving again and the airspace was safe, even as airlines worked through thousands of disrupted flights.

Duffy said a contractor was performing routine work at a remote FAA location, replacing a discontinued copper telecommunications line with fiber.

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During that work, a router began flooding the air traffic control network with more than 1,000 connection attempts every four to five seconds.

The overload produced intermittent problems in communications and radar feeds. With controllers unable to quickly isolate the source and thousands of aircraft already in the air, the FAA stopped departures across the country.

That is a stunning chain of events. A maintenance job involving old copper wiring and one overloaded router was enough to force the most sweeping American aviation safety action in decades.

The White House published the full official briefing in which Duffy and FAA Administrator Bryan Bedford walked through the failure and the decision to ground departures. Officials said the system was stable again Saturday and stressed that they found no evidence of a cyberattack, foreign sabotage, or an AI-related failure.

Duffy said investigators were still determining whether the contractor made an installation error or supplied a faulty router.

He did not present the unresolved question as an excuse. He said plainly that the contractor, the equipment, or both failed to meet the moment.

Bedford defended the ground stop as the responsible call. When the FAA could not guarantee that communications and radar information were reliable, officials chose inconvenience over gambling with human lives.

That decision brought enormous disruption, but it also worked. Homeland Security Secretary Markwayne Mullin said no lives were placed at risk.

Duffy’s Saturday briefing provided the public with the first detailed account of what happened inside the system.

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The Associated Press reported that the ground stop lasted more than four hours and ended around 8:15 p.m. Eastern on Friday. Roughly 12,000 scheduled flights were unable to depart Friday, and the FAA expected as many as 5,000 cancellations among Saturday’s 41,000 scheduled flights while airlines rebuilt their networks.

The report said several thousand flights took off after the restriction was lifted. Officials expected schedules to normalize by the end of Sunday, ahead of the Thanksgiving travel rush.

Airlines also waived many rebooking restrictions for affected passengers. Travelers whose flights were canceled remained entitled to free rebooking or a refund, while officials urged passengers to check directly with their carriers before leaving for the airport.

The technical failure also exposed the cost of leaving America’s most important transportation infrastructure stuck in another era.

Officials said about 70 percent of the old copper lines have already been replaced with fiber. Congress approved $12.5 billion for air traffic control modernization last year, but Duffy and the White House are seeking another $30 billion to finish the work.

President Trump’s administration has been pressing Congress to fund a complete rebuild instead of forcing controllers and technicians to keep patching obsolete systems around the edges.

Friday’s shutdown made the consequences impossible to ignore. The country can spend trillions of dollars and still end up with a national aviation network vulnerable to a failed router during a routine wiring conversion.

The FAA’s public recovery notice directed travelers to airline status pages and the agency’s live airport dashboard as operations returned to normal.

The investigation now has to answer two separate questions.

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First, investigators must determine exactly whether human error, defective hardware, or both caused the router to overwhelm the network.

Second, Congress and the FAA must explain why one maintenance failure could cascade far enough to require a nationwide stop.

The Trump administration made the right safety call once the danger appeared. The next job is making sure an ancient line and a bad router never again have the power to freeze American aviation.

This is a Guest Post from our friends over at WLTReport. View the original article here.

 

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