If the POH told you to jump off the Sydney Harbour Bridge would you do it?
"Also what you are measuring is engine trends I don't and no one I know runs a book on what components are breaking and at what time, how ever if we notice we have a problem showing up we can go back and look at what we put on via P# etc from stores and see whats happening."
No one I know keeps a book either but we do have computer software that keeps all 20 PT6 engines trends in our fleet monitored, tells us what is due and if a component fails before it is due it becomes obvious very quickly