"Sydney Hoeltzli" wrote in message
...
| C J Campbell wrote:
| Newer vacuum AIs have warning flags, dual vacuum pumps, and vacuum
warning
| lights on the annunciator panel. If I had an electric AI and a vacuum AI
and
| they disagreed markedly, I would be suspicious of the one having warning
| lights and flags all over it.
|
| CJ,
|
| How do newer vacuum AIs come with dual vacuum pumps?
|

They come with a new airplane attached to them. Not unlike the $350,000
Cessna ball cap I bought.