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From: "Gerard O Connell" <goconnell@dodo.com.au>
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Reply-to: "Gerard O Connell" <goconnell@dodo.com.au>
Subject: Re: [LML] 320/360 gear extension failure
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&nbsp;I had this problem with the nose gear door. Everything worked fine on
jacks and the problem only occurred while in the air. It was accompanied by
an audible buzzing from the front of the aircraft at higher IAS (&gt;
130-140 k IAS) the source of which took a while to diagnose . Of course it
was made harder by the fact that all worked perfectly well on the ground.
The tower confirmed the failure of the nose gear door to
shut.<BR><BR>Various remedies were suggested including turning up the
pressure to 1300PSI and replacing the door spring with a weaker one (didn't
try this). I also discussed with Vern and Tim Ong and made several postings
regarding same.<BR><BR>The solution was simple--I replaced the sequence
valve and all is well. Apparently leaks/faults in the sequence valve are
difficult/impossible to diagnose. I considered just replacing the seals but
thought the same amount of labour would be involved so I may as well replace
the whole unit (approx US$140 for a new valve.)<BR><BR>--<BR>Gerard O
Connell<BR>Melbourne, Australia<BR>VH-LPD (LNC2)<BR><BR><BR>
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<DIV style="FONT: 10pt arial">--------- Original Message --------<BR>From:
"Lancair Mailing List" &lt;lml@lancaironline.net&gt;<BR>To: "Lancair Mailing
List" &lt;lml@lancaironline.net&gt;<BR>Subject: [LML] 320/360 gear extension
failure<BR>Date: 02/01/2005 12:11<BR><BR>
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<DIV><FONT face=Arial size=2>In the post exchanges between Rob Logan and
PJHWFD I see that reference is made to <STRONG>a door hanging
open</STRONG>.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>I have had this problem and even though I can
see the pressure rise and the pump trip off on the pressure switch I am at a
loss to explain the door failing to close.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>It is always the right hand side and not all
the time.&nbsp; I took out the seat pan on the RHS to check it in flight and
of course it worked fine!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Of course if you do not know it is open you
could be flying that way and this may be why the hinge and rod end fail
under the aerodynamic loads.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Did either Rob and/or PJHWFD reach any
conclusions as to the cause of the door staying open and which side door was
it?&nbsp; I have checked all the obvious possiblities but am no further
ahead.&nbsp; It works like a dream when on the jacks.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>The RH door is off the plane and stays off
until I can be sure that I have solved the problem.&nbsp; The left hand door
is perfrct and has given no problem in 160 hours.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Happy New Year to all</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Ian Crowe</FONT></DIV></DIV></BLOCKQUOTE><BR
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