According to an article by Areo-News, Bulgarian Antonov aircraft will be soon banned from landing throughout Europe:

Bulgaria is in danger of losing European landing rights for almost a third of the aircraft in its fleet. The European Union will ban any Antonov aircraft from landing on the continent because of that make’s high accident rate and generally poor safety record…

The European Safety Aviation Agency, together with the Joint Aviation Authority discovered substantial lapses in aviation safety for Bulgarian commercial aircraft. The report said that Bulgaria needed to take immediate corrective steps regarding aircraft airworthiness, maintenance, operations and flight crew licensing.