"Ron Natalie" wrote in message
. ..
Lack of use is the big killer. People base a lot of things on how many
hours
in service an engine has, but they accumulate problems while sitting as
well.

Which is why I stipulated both an "hours of operation" and a "calendar time"
measure. Either one is significant, you are correct.

I don't particularly enjoy flying with an engine that's just had some major
work, but I'd sure take that over flying with an engine that's NEVER had ANY
work. And an engine that's gotten a few hours under its belt after
maintenance looks better every flight.

Pete