On Wed, 04 May 2005 03:10:35 GMT, "nobody" wrote:

How often do you check the battery in your PA28? I don't remember ever
checking it except at annual. We just had paint and new interior done.
When the interior shop pulled the back seat they found where the battery had
overflowed and begun corroding. I wire brushed everything to bare metal
and sprayed some corrosionX on it. That should last until the annual and
we'll get a new battery box.

Side question; There is some expanded fiberglass insulation under the back
seat, next to both the port and starboard wing root rib. It looks like
standard construction insulation. The insulation on the starboard side had
absorbed some of the battery overflow so I threw it away. Am I going to die
because I just tossed some hypercritical piece of the airframe away? Does
anyone else have this insulation or did this come from a previous owner?
Anybody know specifically what the purpose of the insulation is (thermal,
sound, ???) ?

Thanks in advance,

Eddie
N40008


Hi Eddie,

I suspect it was added by a previous owner. My PA28-180 is bare under
the back seat.

The first time I lifed the back seat bottom, I did find two pieces of
foam rubber cut into 3x3 square tubes under the front edge of the back
seat. And it was clear from their cuts/shape that they had been
amateurly cut.

Whether the previous owner had them there to lift the front edge of
the seat, cushion the bounce a bit, or seal up the air flow at that
point (he had duct taped all the 'lightener' openings in the frame
members) -- I don't know. It may well have been air control since
this plane used to be up in Mass. But the foam was definitely added
by a previous owner -- not the factory.


Chuck
N7398W PA28-180