From: utzoo!watmath!watcgl!dmmartindale
Newsgroups: net.aviation
Title: Re: Losing vacuum pump in IFR
Article-I.D.: watcgl.93
Posted: Tue Jan  4 11:22:35 1983
Received: Wed Jan  5 00:23:35 1983
References: ihuxa.170

A backup vacuum pump has at least two advantages over a backup electric
attitude indicator - your directional gyro stays working too, and you
don't have to figure out where to put the extra attitude indicator.
It would have to be somewhere you can see it reasonably well, and
panel space tends to be pretty tight on the smaller 4-seaters when
equipped for IFR.