All US airports are currently ground stopped

datas | 2 hours ago

What are all the possible reasons to do this?

Has this ever happened?

tencentshill | 2 hours ago

A credible threat from Iran? More likely a technical issue.

Happened in 2023 https://www.faa.gov/newsroom/faa-notam-statement

lobf | 2 hours ago

It happened on 9/11, didn’t it?

stmw | 2 hours ago

yes, 9/11

Jtsummers | 2 hours ago

And in 2023, which was more similar to this. This is a departure stop, planes in the air are still heading towards their destinations. This is not the same as 9/11 where flights were redirected to their nearest airports for immediate landings.

ceejayoz | 2 hours ago

Jan 2023 was the most recent nationwide one.

https://www.cnbc.com/2023/01/11/faa-orders-airlines-to-pause...

https://en.wikipedia.org/wiki/2023_FAA_system_outage

NooneAtAll5 | an hour ago

previous time it happened right before chinese baloon made the news

it may be something similar - remove all random, but controllable sources of radar return for military to start scanning

frutiger | 2 hours ago

"Frequency outage", I think that translates to radio communications not working, until "22 Zulu" aka 22:00 UTC, 5 PM ET.

lenerdenator | 2 hours ago

How does one prevent transmission on a frequency in an area the size of the continental US?

It's radio. Either you jam it or it works. That's the selling point.

NordSteve | 2 hours ago

It's not the transmitting per-se. The network that gives controllers access to the en route radio system isn't letting them connect to the radios.

pstuart | 2 hours ago

I guess some of their floppy drives must have given out.

10111001 | 36 minutes ago

> I guess some of their floppy drives must have given out.

More likely: the reengineered system has a serious bug.

stmw | 2 hours ago

Pilot forum discussion - https://www.pprune.org/rumours-news/674910-us-wide-ground-st...

AstroNutt | 31 minutes ago

Thanks for the link. I clicked it and was greeted with this. LOL!

"It seems the shiny new AI tech tool Strategic Management of Airspace Routing Trajectories (SMART) may have become Failed Airspace Routing Trajectories (FART)"

treebeard901 | 2 hours ago

Microsoft outage related??

PsycorAI | an hour ago

good question

whynotmaybe | an hour ago

I can easily imagine a batch job on a mainframe that sends every hour some important data by mail and that some logic apps checks that mailbox to propagate the data but now that mails have been delayed +12hours it's going haywire

ChrisArchitect | 2 hours ago

Some more discussion: https://news.ycombinator.com/item?id=50489641

DavCreator | 2 hours ago

https://xnotme.com/flightradar24/status/2121347654714077605

cobychapple | 2 hours ago

Looks lifted now. https://www.fly.faa.gov/adv/adv_otherdis?adv_date=11132026&a... https://www.fly.faa.gov/adv/adv_otherdis?adv_date=11132026&a...

brianshaler | 2 hours ago

If you refresh a few times it'll show the advisories.

throwaway81523 | 28 minutes ago

"If builders built houses the way programmers built programs, the first woodpecker to come along would destroy civilization" -- Gerald Weinberg.

Looks like the woodpecker has arrived.

elendilm | 16 minutes ago

I disagree vehemently that programmers build lousy programs. Many of us do quite the contrary.

But this is hilarious, and hence I am upvoting.

deadbabe | 18 minutes ago

This has been a horrible week for AI: Jensen resigned, Microsoft Outage, now FAA outage from new AI system.

The reason is clear: all this points to the ANT ipo next week, people want to pop the AI bubble.

afavour | 9 minutes ago

1. There’s no proof yet that this is AI related

2. The idea that someone would ground all air traffic in order to disrupt Anthropic’s IPO is an absolutely wild conspiracy theory with no basis in reality

mcdonje | 8 minutes ago

What a cope. Per occam's razor, the most likely cause is putting hallucinations on the critical path. But sure, peddle a conspiracy theory.