The Adcox Cloud Buster was a two-seat sporting biplane built by the students of the US Adcox Aviation Trade School in 1931. It was originally powered by a Salmson AD-9 engine of 40 hp (30 kW). A single example was built, changing owners (and engines) several times before it was scrapped in 1938. Cloud Buster Single-engined tractor aircraft Biplanes 1930s United States sport aircraft