Hop-Count: 1
Date: Mon, 20 Sep 1999 12:30 -0500
From: Lloyd A Dunlap <Lloyd.A.Dunlap@jci.com>
Subject: SB050-0999
To: lancair.list@olsusa.com
Message-ID: <1833142@jsux04.corp.jci.com>
Mime-Version: 1.0

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 In light of the recent service bulletin from Lancair about the delamination of 
GM-13 attach block,  I would like a little more information concerning the 
failures out there !  It seems the factory 360 had this happen the week before 
OSH at around 1500 hours of flight  and untold number of good, or bad landings 
as it was also the trainer.  Being that I am one one of those souls with pretty 
white gear wells with a good layer of clearcoat I find this a bit unsettling.  
Have all the failures been on fastbuild or slow kits ? I question the 
differences  between  build procedures and maybe even different revisions in 
the manual.  How many birds out there attached these blocks with 2216 and flox  
or hysol and flox ?  Do we really know if the fastbuild kits are maybe done 
with epoxy and flox as that might be a bit more brittle ?
 I remember a group of non - us  planes in past postings that had this problem, 
maybe they can shed some more light on this. The factory didn't even seem to 
know about those failures !   I think it might be hard to tell  if  the weaker  
early GM-4  brackets with lightening holes cracked first and caused the 
delamination or the other way around.  Lets see if we can compile some more 
info and get the whole story out there. 

Thanks

Lloyd

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