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    Re: Accuracy of Bygrave
    From: George Huxtable
    Date: 2009 Jul 6, 09:59 +0100

    Thanks to Gary for pointing us to three interesting documents on air
    navigation.
    
    Not having had great interest or knowledge about air navigation may explain
    why I haven't come across any of those works before, or their authors. It's
    interesting that "Most probable position", by M D Wright, covering air nav.
    up to 1941, doesn't seem to have been published until 1972. I see that
    several copies are available via Abebooks at reasonable cost. There was a
    tantalising snippet remaining about  a convoy transatlantic flight of three
    American flying-boats in stages in 1919 which was quite new to me.
    
    As for the NACA report no 131, from internal evidence I would judge it to
    date from the early 1920s. Can anyone offer a reference to the complete work
    it forms a part of, and its date?
    
    George.
    
    contact George Huxtable, at  george{at}hux.me.uk
    or at +44 1865 820222 (from UK, 01865 820222)
    or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    
    
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