[bsder]

> It remains unclear why but scapegoating to distract from the plane's issues is commonly seen

Only because people aren't willing to accept the fact that this is just rank, base, bog standard, internal military politics. The pilot was probably fine until he got a new, important posting that displaced someone else and that someone else was willing to throw some elbows to get it overturned.

As for fault, the reality of the military command chain is that you are responsible for shit that goes wrong on your watch even if it isn't necessarily your fault. You can lose the ability to get important postings if something bad goes wrong even once. Generally, those people run their time out as quietly as possible and leave. It is not smart of the military, but the military isn't noted for smart.