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Subject:Re: Adding a backup electric artificial horizon
From:Ron Rapp
Date:Thu May 24 22:33:17 2001
On 24 May 2001 14:11:14 -0500, tina@starbase.neosoft.com (Tina Marie)
wrote:

>Thats not a solution. I learnt to fly instruments in a plane without
>an AH. Needless to say, I dont even blink when the AH is taken away from
>me.
>
>Now, you take my DG, and Im in deep trouble. Relying too much on the DG
>isnt any better then relying too much on the AH - the solution is to
>teach people to scan, not take away the AH.

I think it also helps to have as many independent sources of turn
information as possible. The AI and DG provide some of that, but are
vacuum powered. If one goes the other could be gone as well. The TC
is usually electric but still a gyro. And while its often useful,
many things can keep the compass from giving solid turn info when
youre bumping around in IMC.

What Ive done is to keep a Garmin 195 with external antenna attached
to the yoke, and keep it on the HSI page. Its an independently
powered, non-gyro system. If I suspect a gyro failure of the AI or DG
or TC and cant figure out whats going on (lets say the suction
gauge says everything is fine but the AI and DG have opposite
indications and the TC is flagged) I could use the information from
the 195 in conjunction with the compass and perhaps some radar help
from ATC to help break the "tie".

The thing I love about flying is that its all about being efficient
and smart in using the available resources. A smart guy flying a
"standard" IFR panel can get better results than a person flying the
latest gadgets who doesnt make the best use of the information (even
if he understands how to physically operate that equipment).

--Ron


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