O300D Aluminum in Oil

Jerry Jesion wrote:


Be careful about flying with visible metal in the filter. I had a
similar problem with my O360. Metal in the filter and I grounded the
airplane.

I don't have a filter on my 470 just a screen. I only look at the
screen once a year, at the annual. A couple years ago I started to lose
the starter adapter. The shaft of the adapter shed some metal. We
found that in the screen at the next annual. No way I automatically
ground the plane because of a little metal. You have to find out what
it is and then figure out why it's there. Some metal it doesn't matter.

I don't have a filter on my 470 just a screen. I only look at the
screen once a year, at the annual. A couple years ago I started to lose
the starter adapter. The shaft of the adapter shed some metal. We
found that in the screen at the next annual. No way I automatically
ground the plane because of a little metal. You have to find out what
it is and then figure out why it's there. Some metal it doesn't matter.


I disagree. AFAIK particles of metal large enough to see with the
naked eye in the oil is not normal for any engine (with the possible
exception of just after a major overhaul). IMHO to fly with an engine
making metal is not a good idea. Especially if there is a constant
speed prop. First find out what is going on before making any
decision in this regard.

j

I have the same engine and had the same symptom. My mechanic changed oil and
said fly it 10 more hours and we will re-check. When we re-checked, it was
worse and it cost me $13,000 to get airworthy again. This was my second year
of ownership. :-(


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