Bob Martin sent in this photo of officials from the University of Illinois conducting a calibration workshop at Curless Flying Service in Astoria, Ill., back in May 2012. Piloting the Air Tractor 402 was Knute Miller.
By General Aviation News Staff · ·
Bob Martin sent in this photo of officials from the University of Illinois conducting a calibration workshop at Curless Flying Service in Astoria, Ill., back in May 2012. Piloting the Air Tractor 402 was Knute Miller.
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