logoalt Hacker News

US halts flights at busy East Coast airports, says fiber line cut

109 pointsby allanbreyestoday at 6:41 PM66 commentsview on HN

Comments

cube00today at 7:00 PM

> When it went to flip into the backup, we discovered that the backup fiber had a break

Pretty grim that a life critical system wasn't designed to report that the backup fibre was unserviceable until they attempted to switch over to it.

I wonder how long it was down? Days, weeks, months?

show 3 replies
kqgnkqgntoday at 7:35 PM

Building multiple diverse paths and monitoring for fiber cuts is not hard. Having 2 fiber paths is insufficient for even only moderately important workloads at a tech company. Overlapping fiber cuts happen. For something with significant economic and safety impact this is just crazy.

Sometimes the level of incompetence / lack of care in organizations like this astounds me. I understand issues like this can be complicated and systemic but it honestly makes me think very poorly of the technologists building these systems in government.

show 2 replies
sc68caltoday at 6:52 PM

There is also a new ATC system being rolled out, as early as today

https://www.airwaysmag.com/new-post/faa-smart-first-deployme...

show 1 reply
atonsetoday at 6:55 PM

I don't quite understand this sort of thing happening. Wasn't the whole point of the internet to be a self-healing network where we route around severed cables, etc?

Or is it that these ATC networks are their own air-gapped network with less redundancy? That just doesn't add up. Or maybe there was only one line going to the ATC, with no multiple "ISPs" like a datacenter would have?

show 2 replies
adamm255today at 8:17 PM

Well.. ATC in the north of the Uk was down today as well. Fun.

baggachipztoday at 7:36 PM

Maybe Sean Duffy was just binge-watching his old reality tv shows and gobbled up the bandwidth?

dctoedttoday at 7:23 PM

[delayed]

tomasphantoday at 7:02 PM

ATC seems like a great place to have redundancy with a starlink dish on the roof.

quickthrowmantoday at 6:54 PM

It has been conjectured that the easiest way to locate a buried fiber optic cable is to start digging.

(The actual easiest method is to install the conduit or direct burial cable with tracer wire)

show 1 reply
MadrasThorntoday at 8:07 PM

US used to be capable of deterring aggressive action.

Remove Elon Thiel Trump Vance ASAP

cyanydeeztoday at 7:29 PM

So of course if the FAA is going to put AI into the watchtowers, they're obviously going to use local AI and not rely on some random Amazon cloud infra in some middle eastern country.

right. of course, no ones going to cut corners on the safe use of AI and secure infrastructure in this administration.

ofcrplstoday at 8:13 PM

[flagged]

dborehamtoday at 7:11 PM

So much for all that work to ensure path diversity. Perhaps it got deleted by Elon's goons grepping for "diversity".

chreskotoday at 7:48 PM

Are we sure this wasn't Claude? Has Dario made an announcement yet?