From: email@example.com (Robert Dorsett) Organization: Netcom Online Communications Services (408-241-9760 login: guest) Date: 05 Aug 96 04:21:20 References: 1 2 3
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In article <airliners.1996.1578@ohare.Chicago.COM> firstname.lastname@example.org (Brian A. Reynolds) writes: >>Aaah, but how do you know that your attitude indicator is not faulty? >>What if the various attitude indicators on board also didn't agree? >>See the problem? They have to identify which instruments they can >>trust. > >It is also worth while to remember that FAR Part 25 requires a complete >set of Standby Instruments which are totally independent of the >'normal' displays. I'm not sure of that, and, in fact, standby instrumentation on most aircraft use pitot/static sources which are part of a common pitot/static system. I.e., not "independent" in the sense that, say, two hydraulic systems are independent. See Peter Ladkin's web page for a description of the 757 pitot-static system (don't have the URL handy, but I'm sure it can found via www.chicago.com). R.