this gets into the debate on "replace on time" vs.
"replace on condition".
Mike Busch argues passionately that in many cases
replace on condition is the better course of action.
If it were me, I would replace items that arguable
deteriorate with age, like hoses, on time and leave items
that don't deteriorate with age, on
condition.
here are a couple relevant articles. If you
take Mike's Savvy Aviator course there are many pages in the course
notes
on this subject.
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