> I have a "standard six pack" with a vacuum pump and the reason I did
this
> was because I am uncertain if I have the liberty of using
uncertified
> equipment when flying IFR. I know that I have a lot of freedom in
what I
> can do an experimental aircraft, however I am unsure if that freedom
exists
> once I fly IFR within the system.
>
> Perhaps someone can offer an opinion.
>
> Paul
>
I believe you are correct, Paul. The Part 91 rules list the familiar
bunch of stuff needed for IFR, or "FAA-approved equivalents." So,
seems a nonapproved EFIS won't be IFR legal in a homebuilt. It's
sort-of moot anyway even for the production mfrs like Cirrus. An
advisory circular -- and to oversimplify a bit -- offers them a choice
of proving the unprovable, namely >100,000/1 chance of a fatal
accident. Or prove only that the EFIS works nice (a "qualitative
assessment") if there's redundancy, such as also a mechanical
artificial horizon and certain other stuff. I don't think the mfrs
are bothered by this, because product liability issues alone would
dictate that redundancy be provided.
Reg,
Fred F.
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