Today's Message Index:
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1. 09:03 AM - That magic moment when everything comes together..... (ianwilson2)
2. 03:30 PM - ROCHESTER FUEL LEVEL INDICATOR WIRING (Thruster87)
3. 10:25 PM - Switch Failures (Vern Little)
Message 1
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Subject: | That magic moment when everything comes together..... |
Just wanted to post and say that my X-Air Hanuman (French microlight 79II) finally
flew this weekend. I adopted Bob's Z-20 for the Jabiru installation and apart
from wiring the mags the wrong way round (I'm still learning!) everything
else works perfectly.
I just wanted to say a big thank you to Bob and everyone else on this list - I
REALLY couldn't have done it without all of your considerable expertise and willingness
to help a rookie.
A short, but very sweet video is here....
http://www.youtube.com/watch?v=BTSv4sqDxdQ
Ian
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=255001#255001
Message 2
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Subject: | ROCHESTER FUEL LEVEL INDICATOR WIRING |
The indicator has 3 posts on the back marked SEN, middle not marked and IGN which
goes to which.Didn't want to fry anything. Cheers Alan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=255035#255035
Message 3
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Approximately 100 hours ago, I replaced all of my Carling toggle switches
with Honeywell/Microswitch switches in my RV-9A. I had experienced
multiple failures with the Carling switches in the first 150 hours due to
loose terminals and overheating leading to charred terminals and wiring.
There is a long thread on this topic, including some failure analysis by
Bob.
At this point, I have had no additional switch failures after switching to
the Honeywell switches. At the time, Bob postulated that the lack of
decoupling loops in the wiring may have contributed. I was not so sure, so
I made no other changes other than replacing the switches.
While not conclusive, I would say the root cause of failure was the loose
riveted terminals on the Carling Switches. The lack of decoupling loops in
the wiring may have contributed, but it appears that a higher quality switch
is an effective solution.
I had two failures on the Strobe circuit, one on the Landing light circuit
and one on the progressive-transfer Master Switch in the first 150 hours
with the Carling Switches.
So, if anyone thinks that this is just a characteristic of our OBAM aircraft
being built with "substandard" components, look at this:
======================
FAA Issues Airworthiness Bulletin For Cessna GA Aircraft
Tue, 28 Jul '09
SAIB Affects 100, 200, 300 Series Cessna Aircraft
The FAA has issued a Special Airworthiness Information Bulletin (SAIB) to
advise pilots and owners of an airworthiness concern on mandatory
replacement intervals of Cessna Landing Light, Beacon Light, and Taxi Light
switches on Cessna 100, 200, and 300 series airplanes, specified in Cessna
service bulletins MEB09-3 and SEB09-6 dated May 11, 2009.
Cessna 100, 200, and 300 series airplanes utilize switches in the Landing
Light, Beacon Light, and Taxi Light circuits that have been reported failing
in the field causing overheating and smoke in the cockpit. There have been
reports of burned insulation on the wiring terminals to the switch. On at
least one occasion, there was a small fire in the cockpit. The failure in
these applications can be attributed to contact erosion leading to irregular
arcing and eventual failure of the switch. The contact erosion has been
shown to occur after approximately 4,000 cycles of operation.
Cessna service bulletins SEB09-6 and MEB09-3, initial release, dated May 11,
2009, specify the following:
.An inspection to determine time-in-service for the switches.
.Replacement of switches that have been in service for four or more years
with the month and year of the installation written on the new replacement
switch.
.The month and year of the initial installation written on switches that
have been in service for less than four years.
The FAA recommends that owners, operators, and maintenance technicians act
on the above-referenced service bulletins within the next 400 hours of
operation, 12 months, or the next annual inspection, whichever comes first.
======
Vern Little
Vx Aviation
----- Original Message -----
From: "Thruster87" <alania@optusnet.com.au>
Sent: Monday, July 27, 2009 11:05 PM
Subject: AeroElectric-List: Re: Icom A-210 intercom
> <alania@optusnet.com.au>
>
> I did the 2 second push on the Dual button and the screen shows the ics as
> on and still no go.Spoke to Icom techi with whom we went thru the menu but
> still no go . Might look at putting a intercom in. Cheers Alan
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=254978#254978
>
>
>
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