[ilyt]

The vast majority of incidents are brought to conclusion on why it happened. Even the one article uses as an example. I was watching a bunch of post-mortems of various accidents and just about the only thing that came up when it comes to problems with black boxes is:

* That some of them recorded voice cabin sound for too short (which was fixed in later ones but there are still some old planes flying

* That the cockpit voice recorder recorded in a loop and someone forgot to pull the fuse after accident and it got overwritten.

And overall even those would add very little to investigation.

It has simply become good enough and still are incrementally improved.

- [1] https://www.youtube.com/@MentourPilot/videos