Ancestors

Toot

Written by DJ🌞:donor: on 2025-01-11 at 09:05

oh this suddenly got way more interesting. how in the world is it possible to cause a FDR to stop recording, and how did that happen to both of them at the same time? isn't this precisely why they have two? fascinating

Re: https://www.francetvinfo.fr/monde/coree-du-sud/crash-en-coree-du-sud-les-deux-boites-noires-ont-cesse-d-enregistrer-quatre-minutes-avant-l-accident-qui-a-fait-179-morts_7007720.html

=> More informations about this toot | More toots from infosecdj@infosec.exchange

Descendants

Written by Sebastian Lauwers on 2025-01-11 at 09:11

@infosecdj I didn’t know you read French :?

The plane was apparently old enough that the black boxes didn’t need to be on separate/redundant power supplies. The power cut out exactly at the same time as the bird strike occurred, so it seems the main power for the plane was derived off the impacted engine (engines?).

=> More informations about this toot | More toots from teotwaki@mastodon.online

Written by DJ🌞:donor: on 2025-01-11 at 09:16

@teotwaki what's your source for this? as far as I can tell, this info is not in the article.

anyone can read anything nowadays with some success thanks to machine translation. :p

=> More informations about this toot | More toots from infosecdj@infosec.exchange

Written by Sebastian Lauwers on 2025-01-11 at 09:21

@infosecdj

https://www.pprune.org/accidents-close-calls/663324-jeju-737-800-crash-muan-airport-south-korea-90.html#post11805112

https://news.ycombinator.com/item?id=42664097

=> View attached media

=> More informations about this toot | More toots from teotwaki@mastodon.online

Written by DJ🌞:donor: on 2025-01-11 at 09:33

@teotwaki so both CVR and FDR, both of each, are tied to the same power source? and that source powers everything in the plane and is located in whichever engine it is? wow, that's a sound engineering decision for sure...

that said, how did they even stay in air for 4 whole minutes if all power was lost? so many questions here

I wonder if this will change EASA's mind now.

=> More informations about this toot | More toots from infosecdj@infosec.exchange

Written by Phil M0OFX on 2025-01-11 at 09:18

@infosecdj Loss of power would do it. One of the procedures in an air incident which leaves the plane flyable is to pull the breaker after landing. Redundancy is a big thing in aviation so I'd expect multiple generators. Possibly one per engine.

But a loss of the wiring or a tripped breaker would cut power to the recorders.

If there was a complete loss of power (all engine stop) then the plane would be powered by the RAT which only gives enough power for basic instruments and controls.

=> More informations about this toot | More toots from philpem@digipres.club