crab, you are certainly right in the very general case, but that is such a broad statement in this case it is worthless in this specific case. An oil operator carrying passengers to a rig cannot operate so poorly that it could affect the basic fatigue life, especially in a modern aircraft. The S92 has only 7 parts that have any fatigue life.
It is a disservice to put in the minds of the unwashed, like max, who is seeking answers, the notion that the way a operator flies could make bolts break. They are not mustering cattle in the bush with a one pilot operation! There are other pilots, HUMS. passengers and such to help monitor.