Message-ID: <000901c1af75$e8aa64c0$0e416542@direct>
From: "Ted Stanley" <ted@vineyard.net>
To: "LML Posting" <lancair.list@olsusa.com>
Subject: Corrosion - older Lancairs
Date: Wed, 6 Feb 2002 20:21:06 -0500
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I'd like to know if there are any Lancair owners, particularly those with
older aircraft, and most particularly those with carbon aircraft, that have
experienced corrosion problems.

On the galvanic scale carbon is very close to the noble end, while aluminum
is very close to the active end.  I would therefore expect to find aircraft
incorporating both aluminum and carbon components, particularly when those
components are electrically connected, with at least some evidence of
corrosion on cadmium plated and/or aluminum parts. Given that carbon
typically makes up a large mass compared with the mass of cadmium or
aluminum parts I would further expect that corrosion be locally aggressive
and confined to parts made of active materials.

Any comments from owners with ACTUAL experience are welcome. With all due
respect, speculative ramblings while interesting from the standpoint of
discussion, don't really answer my question.

Real data which would be most helpful includes:

preventative measures taken prior to placing the aircraft in service
calendar age of the aircraft
hours on the aircraft
specific corrosion areas
corrective action taken
evidence of subsequent reoccurrence
typical environment (dry desert, seacoast, etc.)
compromises to safety or serviceability


Thanks,

Ted Stanley
IV kit being inventoried


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