[ocf]

The root cause does not appear (at this stage) to be the same: incorrect maintenance in AA191 as opposed to fatigue cracking here.

Where does this report say proper maintenance would have prevented the incident?

[sosodev]

The report doesn't say that because it's just reporting the facts not drawing conclusions. In my opinion, if a catastrophic failure happens that is a maintenance failure. Either the inspections failed to notice the fatigue or the inspection guidelines were too optimistic.