The wing covering was fabric, and both upper and lower planes carried ailerons, which were strut linked.

The main undercarriage was fitted with hydraulic shock absorbers, unusual at the time on a light aircraft.

In the 1990s the unrelated The WACO Aircraft Company in Forks, Washington offered a homebuilt kit version of the ATO model.

[1] The WACO 240-A was a straight-wing fighter, built for export, powered by 240 hp (180 kW) Wright engine.

[2] There was also an export model WACO Pursuit 300T-A, with 300 hp (220 kW) Wright or Wasp Jr engine.