Dave Butler wrote:
Dave Stadt wrote:

"Dave Butler" wrote in message
news:1143124006.95524@sj-nntpcache-5...

Dylan Smith wrote:

On 2006-03-23, Morgans wrote:


Flutter scares the crap out of me.



I would strongly doubt (based on what I know) that there was even the
remotest chance of flutter. From what I understand, flutter would
require the flexing of the wing structure in such a way to cause the
whole thing to oscillate. This happens with experimental airframes (or
used to happen) because the whole surface or wing would warp under
aerodynamic loads in such a way that you'd get the oscillation. A dent
in a Mooney aileron isn't going to cause that.


FWIW, Mooney ailerons are required to be rebalanced after they are
*painted*.



As are almost all flight control surfaces on most all aircraft.


OK, I thought this requirement came from manufacturers service letters
and the like. I know about Bonanza and Mooney. Is there some other more
general requirement?

Here's a quote from http://www.avweb.com/news/maint/182829-1.html "Getting Good
Paint" by Paul Bertorelli:

"Guenther and better shops insist—rightly—that controls be removed, stripped,
inspected and, most important, rebalanced after painting. On some
controls—Bonanza ruddervators and Mooney ailerons—this is a critical task and
shouldn’t be skipped. But it should still be standard on all aircraft. Guenther
goes so far as to record the balance data in the aircraft logbook, along with
the signoff for the paint itself."

which makes me think this is not a general requirement or practice.