I have been thinking of selling a partnership in my 1990 Socata TB21 Trinidad. I just got the airplane back from annual inspection and was a bit surprised to find I only flew 33 hrs during the last year. Really too few to justify such an airplane. I am based at KSLE.
Rob
While oil analysis can be a good indicator over time of abnormal wear it does not always predict catastrophic failures. I once fly an old 310 using oil analysis over a year with no worrisome signs and still had a crankshaft snap in an engine with 1400 hrs.
As a family doctor and AME I would say that high cholesterol values and the medicine use to treat it are not a problem for certification. The consequences of not treating, ie premature strokes and heart attacks are big certification issues.