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The Trutrak in my 360 had an un-commanded up episode on a trip just a few weeks
ago. I was in level cruise about 10,500 over New Mexico west of Portales. I
scanned the Trutrak window which is at the top of my radio stack and noticed
the small horizontal bars rolling down indicating I needed to trim the nose
down. I clicked the coolie hat a couple of times to trim down and the nose
suddenly started coming up rapidly. I immediately disconnected the AP with the
button on the stick and brought the airplane back to level flight. I then hit
the button to turn off the Trutrak. After a minute or so I turned the Trutrak
back on and it worked normally for the next 1.5 hours into Sedona. I used the
Trutrak flying back to Dallas a week later with no problems.
The Trutrak has turned itself off once or twice over the last year (maybe 80
hours flying), but other than that it has been great. I attribute the on/off
episodes to some electrical spikes or something. The un-commanded up might be
the AP however. I never plan for heavy IFR and I was CAVU when that happened.
Anyway, you asked about Trutraks so I thought I mention my episode.
Matt McManus
LNC2 360
Quoting colyncase on earthlink <colyncase@earthlink.net>:
my stec55x did this once to me in my c172rg
even in that plane it gets your attention.
came down to connector problems at the back of the tray.
I'm hoping tru-trak doesn't have that failure mode.
----- Original Message -----
From: <dskeele@bellsouth.net>
To: "Lancair Mailing List" <lml@lancaironline.net>
Sent: Wednesday, November 15, 2006 4:28 PM
Subject: [LML] Re: Down anywhere !!
Jeff, An S Tec 50, installed in about 1993, Azmuth control has always
been great, altitude control , I could write a small book......If you want
more, it will take a large nickel....850-626-4946
Don Skeele
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