this post was submitted on 13 Nov 2026
160 points (98.2% liked)

Ask Lemmy

42364 readers
1770 users here now

A Fediverse community for open-ended, thought provoking questions


Rules: (interactive)


1) Be nice and; have funDoxxing, trolling, sealioning, racism, toxicity and dog-whistling are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them


2) All posts must end with a '?'This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?


3) No spamPlease do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.


4) NSFW is okay, within reasonJust remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com. NSFW comments should be restricted to posts tagged [NSFW].


5) This is not a support community.
It is not a place for 'how do I?', type questions. If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.


6) No US Politics.
Please don't post about current US Politics. If you need to do this, try !politicaldiscussion@lemmy.world or !uspolitics@lemmy.world


7) No Hit-and-Run questions.
Please don't delete your post for no apparent reason. If you plan on deleting a question later, say so in the post, or if you feel that you have a good reason to remove it, message a mod beforehand. It's not fair to the ones who took their time to answer, and it's not in the spirit of the community.


8) No Bots.
Posts or comments from bots, LLM's, AIs, Neural Networks, Transformers, or Marvin the Paranoid Android are not welcome in AskLemmy. Real humans only please.


Reminder: The terms of service apply here too.

Partnered Communities:

Tech Support

No Stupid Questions

You Should Know

Reddit

Jokes

Ask Ouija


Logo design credit goes to: tubbadu


founded 3 years ago
MODERATORS
 

As of thirty-ish minutes ago ALL commercial air traffic in the US is grounded until further notice.

Anyone got any idea what’s going on? There are very free details about the situation I can find online right now.

top 50 comments
sorted by: hot top controversial new old
[–] LovableSidekick@lemmy.world 3 points 49 minutes ago* (last edited 49 minutes ago)

I just now read regional traffic control centers, which link all the others, got overloaded with data traffic because the FAA communication system is a patchwork mess - multiple generations of new tech integrated with old legacy systems and each other over a long span of time. That kind of setup can be nursed and prodded along for years by dedicated maintainers, but at some point the upside-down Slurpee cup that's been holding up one end of the shelf crumples and everything falls on the floor.

[–] Sludgehammer@lemmy.world 11 points 2 hours ago

Olivia Rinaldi was claiming over on Twitter that the FAA did an update to their telecommunications equipment, which caused a reboot. However when the system rebooted it immediately crashed. So since their communications are borked they just grounded everything.

Is it true? No idea.

[–] unitedwithme@lemmy.today 6 points 3 hours ago (1 children)

I CAN'T HELP but think it's low key another stunt to, yet again, drive up fuel and travel prices RIGHT before the holiday!

Think about it, all these people now need to rebook travel, creating demand for planes/seats/times, and as demands rises we KNOW ticket prices do too.

That's, IMHO, why there's no announcement as to why there are no flights right now.

[–] Stormy@thelemmy.club 5 points 2 hours ago

Could be a false flag for an attack on Iran this weekend.

[–] ilinamorato@lemmy.world 114 points 6 hours ago (7 children)

There's no official word, but to add some context, the FAA deployed a new AI-powered computer system for air traffic control yesterday.

Again, no proof that that's what's going on. But it sure is interesting.

[–] stringere@sh.itjust.works 50 points 5 hours ago (2 children)

They've officially denied this as being related.

So it probably is.

[–] pineapplelover@lemmy.dbzer0.com 4 points 1 hour ago* (last edited 1 hour ago) (1 children)

I watched the press conference and they admitted that the AI (actually, it's called SI) systems overloaded the old routers so that's why we need $50B in emergency money from congress because Trump is a builder and he knows how to build and also previous administrations were also partly to blame

That's the summary if you haven't see the press conference

[–] stringere@sh.itjust.works 4 points 1 hour ago* (last edited 1 hour ago)

FFS

I'm tired of being right.

Edit: who's going to be the no-bid contract winner?

[–] ilinamorato@lemmy.world 29 points 4 hours ago* (last edited 4 hours ago) (1 children)

Honestly, with this administration, that's practically a confirmation that it is AI.

[–] anarchy79@lemmy.world 5 points 2 hours ago

With this administration it could be literally any number of dumb fucking reasons.

[–] Fmstrat@lemmy.world 5 points 2 hours ago

As someone who's grounded, this was my theory as well. They're blaming old routers and software, but who wants to guess it couldn't keep up with the roll out?

[–] 01189998819991197253@infosec.pub 18 points 5 hours ago

An AI posted system... powered on Copilot?...

[–] Scrawny@reddthat.com 4 points 3 hours ago

I bet it thought it was directing real air traffic but in reality it was traffic from Microsoft Flight Simulator.

[–] chunes@lemmy.world 10 points 5 hours ago

They didn't deploy it yesterday. They expanded it yesterday. It has been in use for a couple months so far.

load more comments (2 replies)
[–] Fermion@feddit.nl 95 points 6 hours ago (4 children)

We never had these kinds of outages before they got rid of DEI.

[–] anarchy79@lemmy.world 5 points 2 hours ago

Bring back the twinks!

load more comments (3 replies)
[–] bridgeenjoyer@sh.itjust.works 129 points 7 hours ago (9 children)

IMO theyre keeping it under wraps for one of these reasons:

  • it was an attack and they dont want panic
  • it was yet another huge failure of "ai" bullshit and they can't upset shareholders any longer so need to keep secret
  • it was floppies
[–] SupraMario@lemmy.world 27 points 6 hours ago (2 children)

It's because they're using teams

[–] Frozengyro@lemmy.world 3 points 1 hour ago

As someone who is forced to use teams at work, if pilots used teams every single flight would crash, no exceptions.

[–] paraphrand@lemmy.world 5 points 2 hours ago

Maybe the scariest possibility.

[–] cattywampas@lemmy.world 36 points 6 hours ago (1 children)

It could be something totally innocuous. Last time this happened it was because one engineer pushed an update that broke everything, iirc.

[–] jaybone@lemmy.zip 23 points 6 hours ago (1 children)
[–] stringere@sh.itjust.works 13 points 5 hours ago (3 children)

Ha hahahhaha

Hahahhahahha

FAA ATC isn't using computers that can even run Crowdstrike, so they were safe from that.

load more comments (3 replies)
load more comments (7 replies)
[–] Semi_Hemi_Demigod@lemmy.world 60 points 6 hours ago (3 children)

I was on a flight when everything was grounded. I asked the pilot and he could neither confirm nor deny that it’s aliens.

My connecting flight was cancelled so I split a $600 Uber with four strangers

[–] Zachariah@lemmy.world 36 points 6 hours ago (1 children)
[–] Semi_Hemi_Demigod@lemmy.world 15 points 5 hours ago* (last edited 5 hours ago) (1 children)

One of the folks looks a lot like John Candy.

Another is an old Polish lady who said “I had a feeling ze world would end today”

[–] nehal3m@lemmy.zip 2 points 1 hour ago (1 children)
[–] Semi_Hemi_Demigod@lemmy.world 1 points 59 minutes ago

The chubby funny white guy named Dan literally made this joke. It was awesome

load more comments (2 replies)
[–] jballs@sh.itjust.works 16 points 5 hours ago* (last edited 19 minutes ago) (1 children)

My brother is an ATC. He didn'y have any more info yet, but I'll update this comment when he knows more.

Edit: Just had dinner with him and he didn't have any official info. He did say that

  1. He didn't buy the official story of there being a communication issue between airports. It just doesn't make sense based on how those communications networks function (sorry wish I had more detail here. he went into copper wire laid in the 1960s and how it's different than just the public Internet.) But they wouldn't ground crop dusters and planes flying VFR out of small airports if it were a communication issue.

  2. The AI rollout that has been in the news also very likely has nothing to do with it. Absolutely NO controllers have been breifed on any new systems, so it's likely just something to grab a headline from the Trump administration.

It was his day off but his work called twice while we were at dinner trying to get him to come in.

[–] robert@piefed.ca 6 points 3 hours ago (1 children)

I patiently await the update

[–] jballs@sh.itjust.works 1 points 20 minutes ago

Just posted an edit. Sorry it's not much.

[–] galacticworm@piefed.social 16 points 5 hours ago (2 children)

Trump heard ‘the copilot’ was down and thought ‘but how are they going to land the planneesss? And grounded the country

[–] Triumph@fedia.io 5 points 3 hours ago

This is quite literally possible.

load more comments (1 replies)
[–] e0qdk@reddthat.com 36 points 6 hours ago* (last edited 6 hours ago) (1 children)

The actual advisory from the FAA is:

ATCSCC Advisory
ATCSCC 111 DCC 11/13/2026 NATIONAL GROUND STOP
MESSAGE:  	

EVENT TIME: 13/2053 - 14/0400
DUE TO EXTRAORDINARY CIRCUMSTANCES AND FOR REASONS OF SAFETY.
ATTENTION ALL AIRCRAFT OPERATORS, BY ORDER OF THE FEDERAL AVIATION
COMMAND CENTER ALL AIRPORTS ARE GROUND STOPPED. ALL DEPARTING
TRAFFIC SHOULD REMAIN GROUND STOPPED UNTIL FURTHER NOTICE. INBOUND
INTERNATIONAL FLIGHTS WILL BE MANAGED ON A CASE BY CASE BASIS. 

EFFECTIVE TIME:  	132054 - 140430
SIGNATURE:  	26/11/13 20:54  

Source: https://www.fly.faa.gov/ois/oisedit/adv_oisedit_dis?number=111&day=11132026&gdp=-1&gstop=196093

Beyond that, all I've seen so far is:

Markwayne Mullin, the secretary of homeland security, says Trump administration officials blamed a telecommunication outage but said they did not know its cause and that it would “take some time” to fix the issues grounding flights.

per NYT's reporting: https://www.nytimes.com/live/2026/11/13/us/ground-stop-nationwide-flights-faa/d2ae2ce1-ac6b-59ad-ad8d-daef4e181b34

Edit (longer quote further down from Mullin):

Markwayne Mullin, the secretary of homeland security, blamed the ground stop on a telecommunication outage but said Trump administration officials did not know the cause, adding that it would take an extended period of time to fix the issues. “This isn’t going to just be resolved and turned around within the hour,” he said. “This is going to take some time.”

[–] Hinori@scribe.disroot.org 3 points 2 hours ago

The extraordinary circumstances, probably:

All your base are belong to us

[–] WongKaKui@piefed.ca 48 points 6 hours ago (2 children)

My theory: Trump Admin hired someone incompetent and they fucked up the comms. I mean that just the theme of trump admins basically

[–] Janx@piefed.social 8 points 4 hours ago

That's not completely fair. Sometimes they hire corrupt people too!

load more comments (1 replies)
[–] sfxrlz@lemmy.world 31 points 6 hours ago (1 children)

Outlook and Teams outage /s

[–] Gullible@sh.itjust.works 21 points 6 hours ago (2 children)

Honestly wouldn't be surprised if air traffic control is run off of one massive excel document

[–] 0xKesh@lemmy.dbzer0.com 1 points 6 minutes ago

A million different sheets all labelled "New Sheet 1" "New Sheet 1 (1)" and so on

[–] threeonefour@piefed.ca 22 points 6 hours ago (2 children)

That functions via a series of complex formulas and macros created by an ex-employee that no current employee understands.

[–] sfxrlz@lemmy.world 16 points 5 hours ago (1 children)

And after following links to other sheets and files the last, most important one, lies in that persons personal SharePoint and is inaccessible

load more comments (1 replies)
load more comments (1 replies)
[–] RaoulDook@lemmy.world 26 points 6 hours ago (1 children)

Well the news places just had a story a day or two ago about how they were rolling out AI air traffic control systems nationwide. Could be that their new AI shit the bed right away

[–] Semi_Hemi_Demigod@lemmy.world 34 points 6 hours ago (5 children)

The AI is prioritizing safety by not letting anyone fly.

load more comments (5 replies)
[–] comador@lemmy.world 1 points 2 hours ago

It was a router issue that cascaded to the other locations.

load more comments
view more: next ›