by RTFI
The question I was asking at the head of the topic was should we be looking closer at these failures. As I understand it all of these recent failures have been due to different causes and that from a statistical and materials point of view gives more cause for concern not less.
OK
Fair question.
I would be more concerned about failures for the same cause, as that indicates a growing specific problem whose specific soulution his not working. This is under the presumption that all known specfic problems have been addressed with a specific corrective action.
OTOH, multiple scattered problems are symptomatic of general wear and tear not addressed by maintenance. And as such these problems are expected to be random and best tracked by statistics up to a critical level.
How they are to be addressed is another subject entirlely