Why flights froze, the real reason

November 15, 2026

By Kim Komando

🤯 WOW! You’d think it took a cyberattack to stop every flight in America. Nope. It took one brand-new router, installed to replace one from the early 2000s, firing off about 1,000 logon attempts every four to five seconds. Within 45 minutes, as many as 17 of the 22 regional centers that guide planes across the country were in trouble.

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It’s Friday afternoon. You’re at the gate, already tasting Mom’s lasagna. Then the board flips. Canceled.

At 3:54 p.m. Eastern, the FAA stopped every departure in America. FlightAware counted more than 9,000 cancellations Friday and nearly 7,000 more Saturday. That’s more cancellations than the 2024 CrowdStrike meltdown, per Flighty.

Spoiler: It wasn’t hackers. It was a router.

🛫 How your flight gets across the country

The FAA juggles about 45,000 flights a day. In an average hour, 5,000 planes are up there. Each passes through three controller teams:

1. Tower: The runways and about 5 miles around the airport.
2. TRACON: Approach control. Gets you up and down.
3. En route center: The big regional centers. Once you’re cruising, they hand you off center to center.

Controllers call your trip “1-2-3-2-1.” Tower, TRACON, center, TRACON, tower.

Those centers share radar and radio over one private FAA network called FTI. Contractor L3Harris runs it.

🔌 What broke Friday

• First signs: Controllers start seeing radar that doesn’t add up and radio that cuts in and out.
• The cause: An L3Harris crew was swapping copper lines (Anyone remember T1 lines for the win?) for fiber at a remote site. They replaced a router from 2001 and the new router went haywire, firing about 1,000 logon attempts every four to five seconds.
• The spread: The network shifted to backups at other centers. The flood followed. As many as 17 of 22 centers got hit, FAA chief Bryan Bedford said.
• 3:54 p.m.: The flood had run about 45 minutes with no clear cause. The FAA hit the brakes. Why so long? FAA maintenance is still logged on paper. You read that right, paper! About 3,500 planes in the air landed normally.
• Human error or bad router? TBD. No cyberattack. This one’s a plumbing problem, not a spy movie.

So how bad is the FAA infrastructure?

• Those routers are about 25 years old. They were due to be replaced back in 2006. FYI, routers are meant to work for around 5 years, not 20+ years.
• The FAA rates 105 of its 138 air traffic systems unsustainable or close to it. That’s 3 out of 4. Six went in more than 60 years ago. It’s a nightmare.
• More than 400 FAA facilities still use floppy disks. (Seriously.) Your kids think that’s the save icon.
• The radar computer at those centers went live in 2015, replacing one designed in the late 1960s.

Bedford’s warning: There’s “no backup to the backup,” and it “will continue to break until we replace it.” It’s a huge cluster no doubt.

Flying for Thanksgiving? If your flight’s canceled and you skip the trip, you’re owed cash, not a voucher. FYI, hotels and meals usually aren’t covered.