[–] 18 points 10 months ago

I mean, about time

My (admittedly 6E, not 7) router only gets close to the ~900mbps I get on my line, if I'm stood in the same (not particularly large) room without anything between it and me

As soon as there's anything obstructing line-of-sight, it quickly halves and quarters the rate down to WiFi 5 speeds

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  • [–] 1 point 11 months ago* (2 children)

    altitude: 1 a: the vertical elevation of an object above a surface (such as sea level or land) of a planet or natural satellite

    elevation: 1: the height to which something is elevated: such as c: the height above the level of the sea

    Looks like the same word in a slightly different package. ¯\_(ツ)_/¯

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  • [–] 0 points 11 months ago (3 children)

    It's not elevation, the height of a plane is called altitude. The change was in the elevator which is a control surface on the plane. There is so many people with so little understanding weighing in on this thread it's hilarious

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  • [–] 4 points 11 months ago

    In my previous work we had a bunch of devices that failed at the final installation. All of them passed that test at the end of line at the plant without any issues but they simply refused to boot at the customer site. When we read the ROM contents some data was corrupted We had a very extensive investigation and finally they realized that all the ones that failed had been flown instead of using ground shipping and there had been some solar activity so the final conclusion was bit shift due to solar storm and since fixing was to difficult and expensive it was just decided to stop shipping this particular device by air (it used a very cheap flash memory)

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  • [–] 4 points 11 months ago

    The pilot should be able to intervene. If the system interprets pilot input as nonsensical it overrides the pilot, but the pilot can switch to what Airbus calls "direct law" which directly maps pilot input to control surfaces without any sanity checks from the flight control system.

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  • [–] 1 point 11 months ago

    I would guess flares are getting more common and more powerful, and the protection was projected for less intensity without enough overhead.

    Makes me wonder how big is protective capacity on the space station and satellites, but they are likely built with more security considerations than budget considerations

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  • [–] 4 points 11 months ago* (last edited 11 months ago) (1 child)

    The maths and physics are the same, the impact is not. It's about energy and how well you can shield against it. Shielding against visible light is simple, thin cardboard is probably enough, the aluminium frame of an aircraft is more than sufficient and the plastic or ceramic packaging of a microcontroller too. Shielding against gamma radiation is hard, you'll need something like a thick layer of lead, and even then every once in a while a photon might get through.

    Edit: The incident that caused this grounding was a solar flare, so not just some visible light.

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  • [–] 1 point 11 months ago* (last edited 11 months ago) (1 child)

    :)

    What i tried to point out with my original comment is that it seems odd that the people that get payed billions to build airplanes havent considered this problem. Cosmic radiation causing bit flips is super old knowledge and one of the reasons why ECC memory exists. I dont know if thats what happened here but if it is then its an embarrassing failure.

    Airbus discovered that, at high altitudes, its data could be corrupted by intense radiation released periodically by the Sun.

    Its not very specific so who knows what actually happened or if they are just completely bullshitting maybe.

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  • [–] [S] 6 points 11 months ago (13 children)

    Nice thank you, this one has the details I was curious about

    In a service difficulty report submitted to the FAA the operator stated, that the Elevator Aileron Computer #2 (ELAC2) was identified faulty causing an uncommanded pitch down in cruise flight, the autopilot remained engaged

    On Nov 7th 2025 the NTSB reported: "During cruise, the aircraft experienced an uncontrolled descent for approximately 4-5 seconds before the autopilot corrected the trajectory. This likely occurred during an ELAC switch change." The occurrence caused 10 injuries on board, the NTSB opened an investigation.

    The subsequent investigation identified a vulnerability with the ELAC B hardware fitted with software L104 in case of exposure to solar flares.

    This identified vulnerability could lead in the worst case scenario to an uncommanded elevator movement that may result in exceeding the aircraft structural capability.

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