Sources: the FAA outage occurred after an update to the private communications network that connects the ATC system caused the system to reboot and crash

A rare nationwide ground stop on all departing U.S. flights that lasted several hours Friday has been lifted, the Federal Aviation Administration said.

CBS News 2026-11-14 Kierra Frazier

Context & Ripple Effects

The FAA had already imposed and then lifted an nationwide departure halt tied to communications problems, making the reported update failure a more specific explanation for an outage with system-wide operational consequences. It also fits a longer modernization record: the agency's effort to replace aging air-traffic-control processes followed a 2023 pilot-alert outage traced to a contractor's database-syncing error.

First-order effects

The FAA and airlines must treat the private ATC communications network as the immediate operational constraint: departures were stopped nationwide until communications could support safe traffic management again.
The reported update-triggered reboot puts the change process for the network under scrutiny, rather than framing the interruption solely as an unexplained communications failure.

Second-order effects

Airlines, airports and passengers absorb the disruption through delayed aircraft rotations and disrupted schedules after the FAA's multi-hour ground stop.
FAA modernization suppliers face greater pressure to prove that software changes can be isolated, tested and rolled back without interrupting air-traffic operations.

Third-order effects

Repeated failures involving air-traffic systems and software changes point to modernization as a resilience challenge: replacing legacy components can introduce new failure modes unless deployment controls improve.
The episode reinforces a complementary-input bottleneck in aviation technology: advanced controller tools depend on communications infrastructure whose failure can override gains elsewhere in the system.

The trend: Air-traffic-control modernization is shifting from a technology-upgrade task toward a resilience-and-change-management problem for safety-critical national infrastructure.

Discussion

@chrisdeno Chris DeNovellis on x
@olivialarinaldi ... a planned update on a Friday afternoon? not a chance
@aishahhasnie Aishah Hasnie on x
I'm told this is not remotely close to what happened
@jenniferjjacobs Jennifer Jacobs on x
No nefarious indicators in preliminary assessment of nationwide ground stop, admin officials tell us. The problem has to do with radio frequencies and how pilots talk to one another. @CBSNews https://www.cbsnews.com/...
@olivialarinaldi Olivia Rinaldi on x
NEW: Multiple sources tell @CBSNews that an update to the private communications network that connects America's air traffic control system caused the system to reboot. When the FAA's telecommunication infrastructure rebooted, it crashed, causing the communications outage. The sy…
@shashj Shashank Joshi on x
So on the face of it: - Today's air traffic outage was neither AI-enabled nor a hack - This week's Microsoft outage was neither AI-enabled nor a hack Sometimes vital infrastructure is janky and fragile for non-AI and non-hacker reasons.
@garrett_archer @garrett_archer on x
The FAA Ground stop had nothing to do with an AI rollout. A defense contractor called L3Harris that works with the FAA pushed out an update to their systems. The update failed and it is causing this cascading impact. So yeah. Someone pushed an update out on a Friday afternoon.
@dogsonmarz @dogsonmarz on x
@olivialarinaldi @CBSNews who pushes to prod at 3pm on a friday...?
@afinetheorem Kevin A. Bryan on x
The opposite of AI here and with Microsoft: we will and should already have AI in complete control of timing and nature of software updates and monitoring. For one, they wouldn't push a software update live at 3 on Friday! Even my tiny company is smart enough to push midweek!
@brettkollmann Brett Kollmann on x
Pretty sure the first rule of IT is don't push an update on a Friday afternoon?
@datadrivenmd.social Jorge A. Caballero on bluesky
This is straight out of the plot of Jurassic Park [embedded post]
@sarahstreza.com @sarahstreza.com on bluesky
If this is true, and L3Harris didn't have a failover backup running as part of its upgrade procedures, that's a stunning failure of system administration for a company that manages the entire US aviation network backbone. bsky.app/profile/tech... [embedded post]
r/NWSL r on reddit
Ground stop lifted, reported by NYT
r/news r on reddit
FAA lifts nationwide ground stop, White House says no indication of “nefarious act”
r/wow r on reddit
FAA bans flying in solidarity with WoW Forever
r/technology r on reddit
NYTimes: FAA Ground Stop Lifted
r/environment r on reddit
Planes not flying is good for the environment. Just saying
r/Pete_Buttigieg r on reddit
This flight outage would never have happened under Secretary Pete's watch.
FOX 10 Phoenix Catherine Stoddard on x
Live updates: FAA says nationwide ground stop due to ‘temporary telecommunications outage’
@secduffy Secretary Sean Duffy on x
The @FAAnews issued a nationwide ground stop for all U.S. airports following a communication issue impacting all Air Route Traffic Control Centers. FAA technicians are investigating the issue. We will provide immediate updates as we have them.
@faanews @faanews on x
There has been a temporary telecommunications outage - out of an abundance of caution all flights have been halted. Every flight has been accounted for and international flights will be handled on a case by case basis.
@msftissues @msftissues on x
We have no indication that the FAA's nationwide ground stop is related to any Microsoft services.
@acyn @acyn on x
Q: Could this be AI related? Mullin: We call it SI around here.
@faanews @faanews on x
The safety of the flying public is always the FAA's highest priority. The FAA lifted the ground stop and some flight departures are resuming. Before clearing flights to resume, we thoroughly tested our systems to confirm they were stable and that operations remain reliable.   Pas…
@richontech Rich DeMuro on x
Could this be a cyber attack? Super rare to ground stop all flights like this without an active incident?
@bunkieperkins Bunkie Perkins on x
Don't worry, the guy from Road Rules has this handled [embedded post]
@richontech Rich DeMuro on x
It's been 25 years since this happened... guessing the last time was September 11, 2001.
@cernovich @cernovich on x
Jensen must become America's software and IT head as payback for his affairs. Two years hard labor in DC. [embedded post]
@sammsabin Sam Sabin on x
Homeland Security Secretary Markwayne Mullin just ruled out a cyberattack + any connection to yesterday's Microsoft outage during a White House briefing on the FAA's nationwide ground stop
@daniel_rubino Daniel Rubino on x
The fact that Microsoft knows it needs to clarify this immediately is objectively very funny. [embedded post]
@willguyatt Will Guyatt on x
Given the FAA announced earlier this week it was phasing out floppy discs from US air traffic control systems - nobody should be all that surprised about today's outage. https://www.reuters.com/...
@laralogan Lara Logan on x
For the second time since 9/11. Not sure what a “communication issue impacting all Air Route Traffic Control Venters” but no doubt people out there no and will explain. [embedded post]
@kimzetter Kim Zetter on x
“This isn't another 9/11. This is a telecommunication issue.” - Homeland Security secretary Markwayne Mullin. Gov does not suspect foul play, though not ruling out any possible cause.
@senduckworth Tammy Duckworth on x
The safety of our skies is built on redundancies. Whatever led to the nationwide ground stop will warrant a thorough and complete investigation. As Aviation Subcommittee Ranking Member, I'll be demanding answers from the FAA.
@edmundlee Edmund Lee on x
1. Microsoft outage 2. FAA communications disruption 3. ???
@jackmirkinson Jack Mirkinson on x
i'm no “plane guy” but it seems bad that none of the planes can fly
@flighty @flighty on x
All signs currently point to a purely tech issue. ORD comms initially noticed an issue about 1 hour ago, and it seemed to spread, but only to in-air ATC comms (not airports). Good news is in-air planes make contact with Airport ATC to land safely, and those are working.
@joannastern Joanna Stern on x
Please do NOT blame our Copilot! [embedded post]
r/NotAnotherDnDPodcast r on reddit
Millions debating if it would really be that bad to have a spider lay eggs in your butthole [NS]
r/wallstreetbetsGER r on reddit
WW3
r/news r on reddit
FAA issues nationwide ground stop
r/technology r on reddit
FAA issues nationwide ground stop due to “extraordinary circumstances”
r/PoliticalOptimism r on reddit
FAA lifts ground stop after four hours, but flight cancellations will stretch into the weekend
r/politics r on reddit
FAA grounds departing flights nationwide, citing air traffic communication system outage
r/TrueAnon r on reddit
✈️ 👀
r/MichiganWolverines r on reddit
Did the team make it to Eugene?
r/Oahu r on reddit
FAA issues nationwide ground stop citing communication issues affecting ‘multiple’ air traffic control facilities
r/unitedairlines r on reddit
FAA ends hours-long nationwide ground stop
r/LosAngeles r on reddit
FAA issues nationwide ground stop due to “extraordinary circumstances”
r/USNEWS r on reddit
FAA issues nationwide ground stop due to “extraordinary circumstances”
r/Hawaii r on reddit
Hawaii appears unaffected by nationwide ground stop
NewsMax.com NewsMax.com on x
Rep. Adam Smith to Newsmax: FAA Outage Could Be More Than Just Glitch
@sethabramson Seth Abramson on x
Bloomberg reports that the FBI is focusing on the possibility of a software update causing problems rather than any sort of cyberattack. DHS has simply said nothing can be ruled out yet. https://www.bloomberg.com/...
@eschatonblog.com @eschatonblog.com on bluesky
“Software update” [embedded post]
r/EmergencyManagement r on reddit
FAA issues nationwide ground stop
r/greenville r on reddit
FYI If you're flying out of GSP
r/neoliberal r on reddit
US lifts nationwide flight shutdown caused by communications failure
r/Trumpvirus r on reddit
US grounds flights nationwide after air traffic control communications outage
r/AIDangers r on reddit
*Speculation* but I have a feeling that the FAA grounding of all fights and Microsoft Outlook outage yesterday have something to do with Ai disruption....
r/SeismicDanceEvent r on reddit
Oh shit...
r/nathanforyou r on reddit
The FAA declared a rare nationwide ground stop. Why would Nathan do this?
r/politics r on reddit
FAA ends hours-long nationwide ground stop
NewsMax.com Jim Thomas on x
Retired Controller to Newsmax: ‘Still Not Sure’ Where Outage Began

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