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    Re: Compass's in B747's
    From: Ron Roizen
    Date: 2005 Feb 7, 13:42 -0800

    Quick google brought this up:  http://www.meriweather.com/747/compass.html
    -----Original Message-----
    From: Navigation Mailing List [mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM]
    On Behalf Of Maurice Millard
    Sent: Monday, February 07, 2005 1:13 PM
    Subject: Compass's in B747's
    George Huxtable Wrote
    Finally, I think it was Trevor who referred to the carriage of magnetic
    compasses on aircraft as a thing of the past.
    I remember reading, can't recall where, some time in the last 15 years or
    so, that it was still a requrement for modern civil aircraft to carry some
    sort of magnetic compass, to offer some sort of guidance to the pilot if
    everything else failed, and that every 747 had such a compass tucked away
    at the corner of the windscreen. Can anyone confirm (or refute) this? Would
    a modern pilot have any idea how to apply magnetic variation?
    Yes, I can confirm the presence of same. Actually the compass was mounted to
    the center windscreen post, so either pilot could read it.
    Since all other systems are electronic/electrical I guess it makes sense to
    have some sort of backup.
    Maurice Millard

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