The Engineering Division XCO-6 was an American two-seat observation biplane designed by the United States Army Engineering Division, only two were built and the type did not enter production.

[1] Two prototypes of the XCO-6 were built powered by a 420 hp (313 kW) inverted air-cooled V-1410 engine.

[1] One was tested at McCook Field and subsequently modified but no others were built.

[1] Data from [2]General characteristics Performance

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