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.