From The Archives: Aero 680 Displays High Performance
The Model 680, gracing this issue's cover is powered by two supercharged Lycoming GSO-480-A1A6 engines that give it extra altitude capability and a top speed of 260 mph. The aircraft is seen flying near the plant of Aero Design and Engineering Co. in Bethany, Okla.
The article has photographs, specifications and a diagram of the fuselage to show closely spaced formers and stringers that typify its rigid structure.
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