Blanche wrote:
Concerning the scan to recognize a failure...In addition to the
backup, Precise Flight also offers a lamp that is triggered by
vacuum pump failure. An immediate warning rather than waiting to
discover it. True, it doesn't offer any redundancy, but minimizes
the time to identify a problem.

Of course I recognized my AI failure immediately -- I was turning
right and the AI turned left....

The concern about noticing a failed pump quickly is one of the reasons
I got the voice annunciator system. That and the gear warning horn is
hard to distinguish from the stall horn. I now have something like 8
channels hooked up and I like it.

-Robert