Paul wrote>

I don't think so Don. I don't know about that brand but electric attitude
indicators
are almost universally used in airliners as back up the the vacuum system.
PL

Mark wrote:
In what era, Paul? None of our Boeings back to the 737-300's (Manufactured
in 1986) have anything but EFIS with electrical standby AH. The steam guage
cockpit was still offered on 737 Classics, but was not also electric. The
777 backs up EFIS with EFIS standby instruments.

The only vaccuum system on a modern airliner is the toilet :)
Mark Wrathal

Things have changed. On the other hand only now 727's are finally being retired 
here in the States after Sept 11. Not to say they have not been upgraded 
along the way.

Paul Lamar
 
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