This problem is less complicated than we thought.
What we need are MORE vibration sensors. Then we need the soft and hard ware to filter them. Then we need more satellite links to tell the folks on the ground.
The crew do not need to know about nasty bits in the oil so that idea is out the window. They have enough to do as it is.
No..we need another two may be three sensors in the key places. We could then give the Bayesians more data to make better betting conclusions.
Really the cost of adding more sensors is negligable compared to the cost of ignorance. So our pals in accounts can sleep well knowing that the extra few pennies spent...and believe it is pennies...will return a very handsome plus on the warranty costs.
Go forth with this idea and prosper RR we wish you well