[geoelectric]

That means the transponder became non-viable at that point. Any sort of in-air catastrophe could have caused that, including onboard fire.

Redundant airplane systems protect against component failure, but they tend to still be near each other. For example, if an AA gun were to tag the plane in the right place it could easily take out power to both a primary and backup.

It really doesn't look like a mid-air explosion. It was either a massive spontaneous fire for some reason (assuming the burning thing in the social media post was the plane) or it got shot down.

[megous]

Looks like it got shot down, it just wasn't destroyed right away. Now there's even a video of the event.

https://twitter.com/trbrtc/status/1215348488164298752