http://www.dynondevelopment.com/ is taking money
http://www.grtavionics.com/ Greg has been working hard.
http://www.xbow.com/General_info/Info_pdf_files/Crossbow_AHRS500_FAQ.pdf
is a good read.

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Utopian Maturity: Eternity, Liberty, Equality and now Fraternity & Altruism.