>> For IFR, and an EFIS w/o mechanical redundancy, I have an
>> opinion some may not want to hear!
>
> Ok, I'll take the bait. I would have the Truetracks pictorial pilot
addon
> on the autopilot or a 2nd efis and we were allready agreeing on the
2nd
> battery generator eh?
>
> Regards,
> Jos Okhuijsen
Ducking the opinion part, interestingly for a production aircraft in
the U.S., it ain't that easy, even if FAA-approved electronic boxes.
There's an Advisory Circular which says you prove the failure
probability, with specified statistical math to use, of a fatality in
IFR caused by dual/complete failure. Or...slap a mechanical horizon
gyro somewhere on that pretty panel, and refer to the section on the
much simpler math. When I read something like that, I envision that
error MsgBox... "Windows...is shutting down." :-)
I don't even think the airframe mfrs mind this at all, because in a
product liability suit, having a mechanical, redundant backup is the
clearest way to explain total failure odds to a jury who knows that
all electronic things go blooey sometimes even on second use, but
their KitchenAid mixer of 20 years still works just fine.
Reg,
Fred F.
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