Avia B.534 (Dogan) in Bulgarian Air Force

The Avia B.534 was the iconic fighter of Czechoslovak Air Force of the late nineteen thirties, the Munich diktat period in 1938 and the dissolution of the Czechoslovakia in March 1939. Although she was not allowed to proof her combat quality under Czechoslovak colors she flew sorties in various roles including combat sorties by Luftwaffe, by Vzdusne zbrane of Slovakia and by Bulgarian Air Force. The service by the last mentioned air force is the topic of this detailed study.