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Date: Mon, 23 Jun 2014 07:24:58 -0400
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From: Danny <danny@n107sd.com>
Subject: Canopy latch again but different - LNC2/LEG2
Organization: N107SD, Inc.
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I have the Legacy type latch in my LNC2.  On two occasions I have failed 
to latch the canopy prior to takeoff: the first time I had enough runway 
to abort the takeoff; the second time I did not.  As taught to me early 
in my flight training, first and foremost, if something goes wrong, fly 
the plane!  That’s what I’ve done and I’m here to talk about it.  On the 
second occasion I just flew the plane and returned to base.  I no longer 
fail to latch the canopy but my situation now is different.  I’m now 
experiencing the latch failing to hold in flight.  On several recent 
occasions my latch as unexpectedly released the canopy hold down 
position in flight.  I adjusted the mechanism to make sure it’s 
capturing the canopy correctly but it still pops open and I can’t see 
why.  Is the over-center spring getting weak or is there something else 
going on?  Have any of you experienced this?  I now need a secondary 
latch to keep the primary latch from releasing the hold.  Right now I’m 
pretty much grounded until I find a solution that goes beyond bubble gum 
and bailing wire or duct tape.  From what I’ve read here I know there 
are some folks working on this with Lancair but so far there’s nothing 
solid on it that I’ve seen.  Any suggestions, comments, or helpful hints 
would be appreciated.

Danny
LNC2-360 Mk-II
AOPA 04856278
EAA 647062
NRA 156453324
Nothing is foolproof to the sufficiently talented fool.