Wikipedia
BIAF
BIAF stands for Bulgarian International Air Festival; (Български Международен Авиационен Фестивал / Balgarski Meschdunaroden Awiazionen Festiwal / Bulgarisches Internationales Luftfahrt Festival). It is an international airshow held on Krumovo Airbase, the military part of Plovdiv International Airport. It has been held every 2 years since 2007. The latest event was the 20th, 22nd, 27th, 28th, 29 September and the 2nd, 4th, 5th & 6 October 2013.