Wikipedia
Bunavad
Bunavad (Bulgarian: Бунавадъ; Българско народно въздухоплавателно акционерно дружество) (Bunavad: the Bulgarian National Aeronautical Public Equity Company) was the first national airline of Bulgaria. The airline was conceived in late 1926, operated scheduled services between major Bulgarian cities from October 1927 and closed in 1930.
Bunavad's post-War successors were the Bulgarian Ministry of Transport and Communications' Air Communications Administration (the DVS) which operated under the acronym BVS (Bulgarian: БВС, Български въздушни съобщения) and which in time developed into TABSO and its successors.