Today's Message Index:
----------------------
1. 06:15 AM - Re: IMC - What If??? ()
2. 07:50 AM - Re: Question on Wood props (Ron Lee)
3. 08:18 AM - Re: IMC - What If??? (RobHickman@aol.com)
4. 08:34 AM - Re: Question on Wood props (Jerry Springer)
5. 12:18 PM - Re: IMC - What If??? (Kevin Horton)
6. 02:18 PM - Flighttime Radio tomorrow (Brian Kraut)
7. 02:24 PM - Re: IMC - What If??? (RobHickman@aol.com)
8. 07:56 PM - Re: IMC - What If??? (Bruce Gray)
9. 08:33 PM - Re: IMC - What If??? (Bret Smith)
10. 10:07 PM - Re: IMC - What If??? (Bruce Gray)
Message 1
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| Subject: | Re: IMC - What If??? |
Good point about lighting and agree, but
one fine point. Most static and ground
straps help the airframe more than
avionics. You need to isolate the avionics
from the airframe and feed it with a
truly isolated interrupt power supply.
Most "homebuilt" EFIS don't have to meet
any specs but many do try to have at least
a regulated power supply. That is good to
protect the expensive parts in the main box
but may sacrifice it self in a surge.
Bottom line it goes dark.
Lighting is an amazing and powerful force
that we have scratched the surface. I have
been a pilot of planes that have been hit
by lighting from a small twin (aerostar)
to large twins B737. Each time damage was
done but to the airframe not the avionics.
Not saying that will be the case every
time, just my experience.
The day will come that a EFIS causes a GA
accident in IMC. There have been plenty from
vacuum pumps, so its not shocker the risk is there.
>From: RobHickman@aol.com
>Subject: Re: RV-List: IMC - What If???
>Bruce@glasair.org writes:
>What's gonna happen when you're up there
>and a lighting bolt strikes your RV and
>fries all your electrical systems?
>Without ground straps on your control
>surfaces and static wicks your
>electronics could be the least of your
>problems. Actually we spent a lot of
>time with the help of Crossbow designing
>in lightning protection on the
>electrical connections that wire to the
>EFIS. Crossbow has extensive experience
>with passing the lightning protection
>requirements for certification. We have
>not actually done lightning verification
>testing of our EFIS or the RV-10.
Message 2
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| Subject: | Re: Question on Wood props |
1) Contact the prop maker
2) Consult an experienced local A&P/IA
I am not suggesting irrational fear but you don't want to make mistakes
on prop installation.
Ron Lee
Message 3
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| Subject: | Re: IMC - What If??? |
In a message dated 9/26/2008 6:17:04 A.M. Pacific Daylight Time,
gmcjetpilot@yahoo.com writes:
Most "homebuilt" EFIS don't have to meet
any specs but many do try to have at least
a regulated power supply. That is good to
protect the expensive parts in the main box
but may sacrifice it self in a surge.
Bottom line it goes dark.
The AFS internal Lithium battery powers the system after the protected
regulated power supply. If a voltage spike takes out the regulator the screen
will not go dark until the battery run's down, usually over an hour.
Rob Hickman
Advanced Flight Systems
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Message 4
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| Subject: | Re: Question on Wood props |
Doubt many A&P/IA have much experience with wood props anymore, I would
contact Ed Sturba,
in the past I have found him to be a fantastic person to deal with.
As long as the the lug inserts fit tight you are going to be ok with
proper torq but still get his opinion.
Jerry
Ron Lee wrote:
>
> 1) Contact the prop maker
>
> 2) Consult an experienced local A&P/IA
>
> I am not suggesting irrational fear but you don't want to make mistakes
> on prop installation.
>
> Ron Lee
>
>
Message 5
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| Subject: | Re: IMC - What If??? |
RobHickman@aol.com wrote:
>
> In a message dated 9/26/2008 6:17:04 A.M. Pacific Daylight Time,
> gmcjetpilot@yahoo.com writes:
>
> Most "homebuilt" EFIS don't have to meet
> any specs but many do try to have at least
> a regulated power supply. That is good to
> protect the expensive parts in the main box
> but may sacrifice it self in a surge.
>
> Bottom line it goes dark.
>
>
> The AFS internal Lithium battery powers the system after the protected
> regulated power supply. If a voltage spike takes out the regulator the screen
> will not go dark until the battery run's down, usually over an hour.
>
>
>
Has the ability of the EFIS to remain powered after a lightning strike
been validated by any HIRF/lightning testing, or is it purely
hypothetical? Lots of stuff that looks good on paper fails when
subjected to testing.
Kevin Horton
--
Kevin Horton
RV-8 (Flight Test Phase)
Ottawa, Canada
http://www.kilohotel.com/rv8
Message 6
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| Subject: | Flighttime Radio tomorrow |
We are having Joe Norris on the show tomorrow morning at 10:07 AM eastern time at www.flighttimeradio.com. Joe is the new homebuilt community manager for EAA. He was the top tech support guy there for a log time and is probably the most knowledegeable people I know with experimental and certified aircraft. It would be great if some of you wanted to call into the show and ask Joe some technical questions. The number is 904-854-1320.
Message 7
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| Subject: | Re: IMC - What If??? |
In a message dated 9/26/2008 12:20:58 P.M. Pacific Daylight Time,
khorton01@rogers.com writes:
Has the ability of the EFIS to remain powered after a lightning strike
been validated by any HIRF/lightning testing, or is it purely
hypothetical? Lots of stuff that looks good on paper fails when
subjected to testing.
You must have not read my original response,
In a message dated 9/25/2008 4:55:37 P.M. Pacific Daylight Time, RobHickman
writes:
Actually we spent a lot of time with the help of Crossbow designing in
lightning protection on the electrical connections that wire to the EFIS. Crossbow
has extensive experience with passing the lightning protection requirements
for certification. We have not actually done lightning verification testing
of our EFIS or the RV-10.
**************Looking for simple solutions to your real-life financial
challenges? Check out WalletPop for the latest news and information, tips and
calculators. (http://www.walletpop.com/?NCID=emlcntuswall00000001)
Message 8
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| Subject: | IMC - What If??? |
Just remember, with a non TSO'd EFIS, you and your family are the Beta
testers.
Bruce
www.Glasair.org <http://www.glasair.org/>
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of
RobHickman@aol.com
Sent: Friday, September 26, 2008 5:24 PM
Subject: Re: RV-List: IMC - What If???
In a message dated 9/26/2008 12:20:58 P.M. Pacific Daylight Time,
khorton01@rogers.com writes:
Has the ability of the EFIS to remain powered after a lightning strike
been validated by any HIRF/lightning testing, or is it purely
hypothetical? Lots of stuff that looks good on paper fails when
subjected to testing.
You must have not read my original response,
In a message dated 9/25/2008 4:55:37 P.M. Pacific Daylight Time,
RobHickman
writes:
Actually we spent a lot of time with the help of Crossbow designing in
lightning protection on the electrical connections that wire to the
EFIS.
Crossbow has extensive experience with passing the lightning protection
requirements for certification. We have not actually done lightning
verification testing of our EFIS or the RV-10.
_____
Looking for simple solutions to your real-life
fi382257x1200540686/aol?redir=http://www.walletpop.com/?NCID=emlcntus
wall086
/aol?redir=http://www.walletpop.com/?NCID=emlcntuswall00000001"
target="_blank">Check out WalletPop for the latest news and
information,
tips and calculators.
Message 9
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| Subject: | IMC - What If??? |
Bruce,
Following your rationale, anyone who flies a non-certificated aircraft is a
Beta tester... I fail to accept your premise.
Bret Smith
RV-9A N16BL
Blue Ridge, Ga
www.FlightInnovations.com <http://www.flightinnovations.com/>
_____
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Bruce Gray
Sent: Friday, September 26, 2008 10:55 PM
Subject: RE: RV-List: IMC - What If???
Just remember, with a non TSO'd EFIS, you and your family are the Beta
testers.
Bruce
www.Glasair.org <http://www.glasair.org/>
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of RobHickman@aol.com
Sent: Friday, September 26, 2008 5:24 PM
Subject: Re: RV-List: IMC - What If???
In a message dated 9/26/2008 12:20:58 P.M. Pacific Daylight Time,
khorton01@rogers.com writes:
Has the ability of the EFIS to remain powered after a lightning strike
been validated by any HIRF/lightning testing, or is it purely
hypothetical? Lots of stuff that looks good on paper fails when
subjected to testing.
You must have not read my original response,
In a message dated 9/25/2008 4:55:37 P.M. Pacific Daylight Time, RobHickman
writes:
Actually we spent a lot of time with the help of Crossbow designing in
lightning protection on the electrical connections that wire to the EFIS.
Crossbow has extensive experience with passing the lightning protection
requirements for certification. We have not actually done lightning
verification testing of our EFIS or the RV-10.
_____
Looking for simple solutions to your real-life
fi382257x1200540686/aol?redir=http://www.walletpop.com/?NCID=emlcntuswall086
/aol?redir=http://www.walletpop.com/?NCID=emlcntuswall00000001"
target="_blank">Check out WalletPop for the latest news and information,
tips and calculators.
href="http://www.matronics.com/Navigator?RV-List">http://www.matronics.com/N
avigator?RV-List
href="http://forums.matronics.com">http://forums.matronics.com
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Message 10
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| Subject: | IMC - What If??? |
Yes, to a degree. I built my Glasair III, you built your RV-9. We both
know
how it was done and the care and pride we took in it.
I didn't write the code in my EHSI or your EFIS. I have no idea of the
care
or competence that went into it. Meeting TSO specs is one way to gage
that
level. Finding a bunch of pilots willing to bet their lives on it and
fly it
around for several thousand hours is another. No thanks, I'll pass.
Bruce
www.Glasair.org <http://www.glasair.org/>
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Bret Smith
Sent: Friday, September 26, 2008 11:33 PM
Subject: RE: RV-List: IMC - What If???
Bruce,
Following your rationale, anyone who flies a non-certificated aircraft
is a
Beta tester... I fail to accept your premise.
Bret Smith
RV-9A N16BL
Blue Ridge, Ga
www.FlightInnovations.com <http://www.flightinnovations.com/>
_____
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Bruce Gray
Sent: Friday, September 26, 2008 10:55 PM
Subject: RE: RV-List: IMC - What If???
Just remember, with a non TSO'd EFIS, you and your family are the Beta
testers.
Bruce
www.Glasair.org <http://www.glasair.org/>
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of
RobHickman@aol.com
Sent: Friday, September 26, 2008 5:24 PM
Subject: Re: RV-List: IMC - What If???
In a message dated 9/26/2008 12:20:58 P.M. Pacific Daylight Time,
khorton01@rogers.com writes:
Has the ability of the EFIS to remain powered after a lightning strike
been validated by any HIRF/lightning testing, or is it purely
hypothetical? Lots of stuff that looks good on paper fails when
subjected to testing.
You must have not read my original response,
In a message dated 9/25/2008 4:55:37 P.M. Pacific Daylight Time,
RobHickman
writes:
Actually we spent a lot of time with the help of Crossbow designing in
lightning protection on the electrical connections that wire to the
EFIS.
Crossbow has extensive experience with passing the lightning protection
requirements for certification. We have not actually done lightning
verification testing of our EFIS or the RV-10.
_____
Looking for simple solutions to your real-life
fi382257x1200540686/aol?redir=http://www.walletpop.com/?NCID=emlcntus
wall086
/aol?redir=http://www.walletpop.com/?NCID=emlcntuswall00000001"
target="_blank">Check out WalletPop for the latest news and
information,
tips and calculators.
href="http://www.matronics.com/Navigator?RV-List">http://www.matronics.
com/N
avigator?RV-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
href="http://www.matronics.com/Navigator?RV-List">http://www.matronics.
com/N
avigator?RV-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
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