That would run face first into proprietary info and corporate classified info.

Behold all the fucks I do not give. If it’s that critical they lose all claim to being propriety. It’s just like patent, there’s no such thing as a secret patent, so anything that safety critical doesn’t get to stay secret either.

Regulation won’t detail what a company does to that level. They might say something like “fasteners shouldn’t come loose” but it wouldn’t have a torque spec.

It doesn’t now but it’s utterly trivial to fix that. Just make the regulations say that components must meet the manufacturer specifications and require manufacturers to publish and maintain all the specifications of all safety critical components. If they want to keep it secret then that means it’s not safety critical and they’re responsible for any accidents resulting from its failure.