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Date: Thu, 23 Aug 2007 20:15:49 -0400
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From: "Steve Colwell" <mcmess1919@yahoo.com>
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Subject:  fallibility in the digital age
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"If you want a truly independent GPS, it needs to be independent of the
aircraft's power bus, which means running it on internal batteries all the
time."

Hamid,

I assumed (dangerous word) the dual B&C Voltage Regulators with Crowbar
Overvoltage Protection would protect my backup TruTrak ADI with its own
back-up battery and the Garmin 396 also hooked to ships power.  How likely
is overvoltage protection to fail?  By the way, I really appreciate the
Professional Input on LML as one who has little knowledge of technical
issues. 

Steve Colwell  dual Chelton Legacy soon to emerge from the paint shop (only
to enter the Upholstery Shop)