Ok, if you are only referring to past known single pump failures, you have a point. But that is why I will stand by this statement:
the prudent thing to do would be ground all S92's until there is a definitive cause.
This could be an entirely, as yet unknown, new problem. Why take that chance?
Have you seen the latest grounding of ALL the 206 fleet? This because of a faulty flight control bearing discovered in a newly manufactured aircraft. However, erring on the side of safety, they have grounded the entire series.