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<DIV><FONT face=Arial size=2>Wayne, as I recall in your case the post mortem
thinking was it may have been a regulator failure. </FONT><FONT face=Arial
size=2>I also recall you were flying PPM not PCM. In addition the same day Art
had interference issues (also on PPM) in the general location that you lost
control.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Keith</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=wgalligan@att.net href="mailto:wgalligan@att.net">Wayne Galligan</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">General pattern discussion</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, September 02, 2008 11:34
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Ideas on
radio beserkness-cause of crash??</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>That sounds just like what happened when my Aries
went in at Nederland. Elevator and throttle oscillated and there was
very slow response on controls just like a weak battery. Post crash
indicated a good charge on battery but I still think it may have had a bad
cell. Only had one flight on it at that time.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wayne Galligan</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=tkeithblack@gmail.com href="mailto:tkeithblack@gmail.com">Keith
Black</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">General pattern
discussion</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, September 02, 2008 11:24
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Ideas
on radio beserkness-cause of crash??</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I was standing next to Gray when this occurred.
What I observed didn't look like a battery failure because the plane began
violently oscillating in what appeared to me to be in pitch. This
oscillation was so severe that I thought the plane was experiencing flutter.
I told Gray to cut the throttle, at which point he said he already had. I
looked at his transmitter and the throttle stick was indeed all the way
down, however, the engine continued oscillating from high to low. I also
looked at his battery meter on his TX and it was well into the black. A
couple of times I thought the plane was going to fly off into the distance
in this out of control manner but thankfully Gray was able to keep it close
to the field.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What's puzzling are the following:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>1. If it were interference the PCM would have
gone into lockout.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>2. A combination of in and out of lockout
fluctuations would not cause the throttle to go up and down since the
throttle stick was down and the lockout was set to idle.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>3. If it were RX battery related I would not
expect it to oscillate the control surfaces and the throttle, unless the RX
freaks out at low voltage.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Therefore, I believe this was some type of
radio related failure either on the TX or RX side, most likely the RX.
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>One last thought, I have heard people report a
bad servos in the system making all the other servos behave badly. Maybe
someone has some feedback on this.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Keith Black</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>----- Original Message ----- </DIV>
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<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=gfowler@raytheon.com href="mailto:gfowler@raytheon.com">Gray E
Fowler</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">General pattern
discussion</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, September 02, 2008
9:24 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Ideas
on radio beserkness-cause of crash??</DIV>
<DIV><BR></DIV><BR><FONT face=sans-serif size=2>Hey Anthony</FONT>
<BR><BR><FONT face=sans-serif size=2>Never set up that warning function.
Several people have indicated a low battery. Lance thinks fractured
crystal...10 years old, stored in my garage at 105F to 25F or so. Every
battery failure I have seen (none were mine) the radio flat out quit.
Lance and I are going back out today, better equipped (long
pants-machetes!!!) If I find it I can re-test the battery..It tested about
150 MAH of its rated capacity, but I do not have the tester drain the crap
out of the volatge.</FONT> <BR><FONT face=sans-serif size=2>Man that plane
flew good....9 lbs 15 oz...My skills are so deteriorated.</FONT>
<BR><BR><FONT face=sans-serif size=2><BR></FONT><BR><FONT face=sans-serif
size=2><BR><BR><BR>Gray Fowler<BR>Senior Principal Chemical
Engineer<BR>Radomes and Specialty Apertures<BR>Technical Staff Composites
Engineering<BR>Raytheon</FONT> <BR><BR><BR>
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<TD width="40%"><FONT face=sans-serif size=1><B>Anthony Romano
<anthonyr105@hotmail.com></B> </FONT><BR><FONT face=sans-serif
size=1>Sent by: nsrca-discussion-bounces@lists.nsrca.org</FONT>
<P><FONT face=sans-serif size=1>09/02/2008 09:18 AM</FONT>
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<DIV align=center><FONT face=sans-serif size=1>Please respond
to<BR>General pattern discussion
<nsrca-discussion@lists.nsrca.org></FONT></DIV></TD></TR></TBODY></TABLE><BR></P>
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<DIV align=right><FONT face=sans-serif size=1>To</FONT></DIV>
<TD><FONT face=sans-serif size=1>General pattern discussion
<nsrca-discussion@lists.nsrca.org></FONT>
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<TD>
<DIV align=right><FONT face=sans-serif size=1>cc</FONT></DIV>
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<DIV align=right><FONT face=sans-serif
size=1>Subject</FONT></DIV>
<TD><FONT face=sans-serif size=1>Re: [NSRCA-discussion] Ideas
on radio beserkness-cause of
crash??</FONT></TD></TR></TBODY></TABLE><BR>
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<TD></TD></TR></TBODY></TABLE><BR></TD></TR></TBODY></TABLE><BR><BR><BR><FONT
face=Tahoma size=2>Hi Gray,<BR>What a huge bummer. Did you have the low rx
alarm function turned on? On the Stylus that is a switchable function that
will drop the throttle to alert you to a low rx voltage. Now I am paranoid
and have to go check mine.<BR>Have heard of similiar "brown out" type of
behavior with a Nimh rx battery failure. Hope you can recover the
aircraft. This time of year the growth in most places can swallow
anything.<BR>Many solid flights for almost ten years on my Stylus but it
is serviced every winter.<BR><BR>Anthony<BR><BR><BR><BR><BR></FONT>
<HR>
<FONT face=Tahoma size=2><BR>To: NSRCA-discussion@lists.nsrca.org<BR>From:
gfowler@raytheon.com<BR>Date: Tue, 2 Sep 2008 08:30:17 -0500<BR>Subject:
[NSRCA-discussion] Ideas on radio beserkness-cause of
crash??<BR><BR></FONT><FONT face=sans-serif size=2><BR>Guys</FONT><FONT
face=Tahoma size=2> <BR></FONT><FONT face=sans-serif size=2><BR>Yesterday
on my 4th flight of the day my PCM Stylus went nuts. PCM program was set
for idle throttle and about 5-6 clicks(trim wise) of up elevator-all other
surfaces neutral, and this was tested as such by turning off the
transmitter. As I passed by center I noticed that I could not gain
altitude and the the throttle started going from idle to high...then
ailerons started oscillating small left-right deflections. I cut the
throttle to the kill position but the engine persisted up-down bursts. I
was able to do a 180 degree turn with aileron coming back to
center...never losing altitude, but unable to change the altitude,elevator
seemed unresponsive. As I passed by center again I was losing more and
more control. The plane flew over the wooded area south of the field at
about 200 feet high, I could not turn and the ailerons rolled the plane
upside down and it went straight down into the trees. This whole episode
last about 45 seconds. Cannot find the plane, and remnants of Gustav are
headed my way.</FONT><FONT face=Tahoma size=2> <BR><BR></FONT><FONT
face=sans-serif size=2><BR>Plane was new had about 10 flights on
it.</FONT><FONT face=Tahoma size=2> <BR></FONT><FONT face=sans-serif
size=2><BR>New battery..NiMH 5 cell pack -no regulator (ran 5 cell packs
for years, no regulator) <BR>Reciever-1999 Stylus PCM-never crashed,
wrapped in foam</FONT><FONT face=Tahoma size=2> </FONT><FONT
face=sans-serif size=2><BR>New switch</FONT><FONT face=Tahoma size=2>
</FONT><FONT face=sans-serif size=2><BR>Transmitter-1999 Stylus, never
been serviced, never had problems</FONT><FONT face=Tahoma size=2>
<BR></FONT><FONT face=sans-serif size=2><B><BR>What would cause a PCM
receiver to do such a thing?</B> If I had and intermittent signal, once
the receiver did get a signal the only two throttle signals should have
been idle (PCM hold) and off (transmitter). I am going to send the
transmitter in just to get checked.</FONT><FONT face=Tahoma size=2>
<BR></FONT><FONT face=sans-serif size=2><BR>Thanks
guys....<BR><BR><BR>Gray Fowler<BR>Senior Principal Chemical
Engineer<BR>Radomes and Specialty Apertures<BR>Technical Staff Composites
Engineering<BR>Raytheon</FONT><FONT face=Tahoma size=2><BR><BR></FONT>
<HR>
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