Fifty Years of 'Happiness' - celebrating half-century of the Hatz 

It’s been 50 years since John Hatz made the first flight of his CB-1, a biplane he designed for himself when he couldn’t find exactly what he wanted on the market. In the decades since, scores of people have fallen in love with the design and built their own, and several of them came to EAA AirVenture Oshkosh 2018 for a very happy half-century birthday party.

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