Date: 13 Jan 99 02:13:54 From: felton@Princeton.EDU (Phil. G. Felton) Organization: Princeton University References: 1 2 3 Followups: 1 2
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In article <airliners.1998.1894@ohare.Chicago.COM>, "email@example.com" <firstname.lastname@example.org> wrote: > >You may not be aware that the flight instruments in newer transports are > >electrically driven instruments; that is to say breaking the VSI or > >other pressure gauge might work in a light plane but will not recover > >the pitot-static system ... Well it wouldn't work in a pressurized plane anyway. I'd be surprized if all the instruments on the modern planes were all electric. Even on a light plane like a Cessna there are vacuum driven gyros and elect driven gyros to prevent total system dropout in case of a power failure. There's usually an alternate static source provided (external static ports do get blocked in icing conditions sometimes). Of course you have to recognize when you need it! Phil.