Originally Posted by
Onceapilot
There will be a reason for the bearing failure that probably is the main cause of the subsequent accident. Questions about the overall design of the input assembly might come into it. However, there will be great effort made to identify why the bearing failed and, the mitigation of that process. It might be anything from: a major redesign, an improved bearing, improved QC of the bearing, revised servicing or an improved inspection.
OAP
Undoubtedly but the main focus should be as to why a relatively common and foreseeable problem - a bearing binding, would allow a primary control to disconnect itself and be driven to the pitch limits.
It is a single point of failure and, worryingly, one that is designed to fail at some point.