Thanks for the links Airsound, I have now read the articles, and having done so, I would have to say that I am not drawn towards the conclusion that they are all unconnected. IMHO, a decent proportion of them could be grouped under the heading of loss/lack of situational awareness. That said, the two glaring exceptions are the power reductions, which go well beyond the counterintuitive and deep into thoroughly irrational territory. These have never been explained, nor adequately dissociated with problems which I am told were experienced with the particular mark of Avon engine whilst in service.