Opening the Envelope

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Bill Brown, builder of Sonex SN# 642 has been exploring the aerobatics envelope in his aircraft. A member of EAA chapter 25 in Minneapolis/St. Paul, MN, Bill wrote an article about aerobatics in the Sonex for the May, 2006 edition of the chapter’s newsletter On Final. Bill’s article Opening the Envelope (956kb PDF file) is a good account of his experiences.