From: utzoo!watmath!watcgl!dmmartindale
Newsgroups: net.aviation
Title: Losing vacuum pump in IFR
Article-I.D.: watcgl.85
Posted: Fri Dec 31 08:15:42 1982
Received: Sat Jan  1 00:28:42 1983

There is an article in the most recent "Flying" about adding an electrically-
powered auxiliary vacuum pump.  The idea is that instead of having a second
engine-mounted pump which wears out and has to be replaced periodically,
this one should be good for the life of the plane.  Also, you could add
it to any plane while a backup engine-mounted pump requires an engine
tooled to accept it.  Of course, it's more expensive than a second
engine-driven pump - the electric motor and associated parts ran many
hundreds of dollars.