From: N295VV@aol.com
Message-ID: <0.1559a783.254e5fc9@aol.com>
Date: Sun, 31 Oct 1999 22:15:21 EST
Subject: Re: LNC4 Flap Actuator Cylinder HC-09
To: jwrightdo@worldnet.att.net, lancair.list@olsusa.com
Mime-Version: 1.0

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John, 

Thanks for letting me know you also saw what I have seen.  Sometimes I feel 
like a voice in the wilderness...  You are number five to watch your gear box 
walls move in and out.   Fun, isn't it?  My guess is that there are 95 more 
planes out there doing the same thing-I hope the word gets out before someone 
has a catastrophic failure.

I moved the flap actuator handle up and down until all the pressure bled off 
the system, and was prepared to sop up lots of hyd fluid when I opened the 
fittings.  To my surprise, I saw about ten drops, not a gusher.

To disassemble the cylinder itself, drain the fluid, mark the angle of the 
fittings with a felt tipped pen, remove the fittings, then push the end of 
the cylinder in about 1/4", which allows you to easily remove the C ring.  Be 
sure to put the spacer in the cylinder in the correct end to shorten the 
stroke in the right direction.

I suggest you fill the hyd cylinder with fluid before you put it back in the 
system, as I didnt, and it took a long time for the air to get out of it.

John, I am posting my answers to your letter on the builder's site so that 
more people will take this problem seriously, and I won't have to repeat the 
disassembly instructions.

Our heartfelt thanks should be given to Bill Maddox for bringing this to our 
attention in the first place-I thought I was imagining things until I 
remembered that he mentioned it.  Well, at least 5% of the planes have this 
problem, maybe it is time for an AD to be issued?

David Jones, Pecatonica, Illinois
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