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Mark Sletten
Joined: 10 Jan 2006
Posts: 43
Location: St. Jacob, IL (Near St. Louis, MO)
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 Posted: Sun Jan 22, 2006 5:38 am Post subject: Artificial Horizon Uncertified Artificial Horizon Uncertifie |
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Bruce,
Why can't the same be said of the "latest crop of electronic game screens"?
If I develop and execute a throrough test program, like the one you used for
your aircraft, can't I determine a product's usefulness for my purposes? I
can place the instrument in all the likely situations I might find myself in
given my flying mission and see how it reacts. If it works, fine, if not,
try something else. Isn't this what manufacturers like Chelton and Avidyne
do? I thought we are building experimental aircraft here, why shouldn't we
experiment?
Mark & Lisa Sletten
Legacy FG N828LM
http://www.legacyfgbuilder.com
The only thing left to test, after your FAA inspection
(which is to insure no parts are going to fall off), is the
airworthiness of
the beast. That can be determined in the standard 25/40 hour test
period. If
you built a known kit your chances of success are good, if it's your
own
design you did on the back of a napkin, don't fly over my house.
The same cannot be said for the latest crop of electronic game
screens.
They're untested, uncertified, and just plane dangerous for all except
strictly VFR airplanes.
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_________________
Mark Sletten
Legacy FG N828LM
http://www.legacyfgbuilder.com |
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Bruce(at)glasair.org
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| Posted: Sun Jan 22, 2006 6:11 am Post subject: Artificial Horizon Uncertified Artificial Horizon Uncertifie |
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Good question, if you talk to the BMA, Dynon, etc low cost non certified
EFIS guys, they all say, "yep, we tested for that." When you try to get more
specific about their testing programs, the answers start getting more vague.
Did you do DO160/DO178 testing? "No" they answer but our product will meet
the specs they say. The cost of meeting the specs of DO160/178 testing is
expensive. Performing the tests is not. However the cost to re-engineer the
faults the testing uncovers is expensive. The DO160/178 requirement is the
major hurdle to cross for certification. If all these manufacturers were so
damn sure their products would pass, why didn't they test and certify them?
It would give them a leg up on the competition. The real reason is that
they, in all probability, would fail the testing.
You can bet your life on any piece of equipment you desire or make. Just
remember, our friendly FAA makes it's rules based on body count.
Bruce
www.glasair.org
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