Avia BH-9 was a Czechoslovak training, sport and tourist aircraft which was flown on 25 November 1923. Total 11 pieces were built, of which 10 were ordered by Czechoslovak Air Force, where they were used in aviation schools until early 30s. Then some machines were transferd to Aeroclub of the Czech Republic and Masaryk Aviation League, or sold to private users. The last BH-9 flew until 1939 and now is exhibited in the original military color design in the collections of the National Technical Museum in Prague.