Vehicle registration plates of Bulgaria compatible with both the Cyrillic and Latin alphabets came into force: Vehicle registration plates of Bulgaria Standard Bulgarian vehicle registration plates display black glyphs (alphanumeric characters) on a white background, together with – on the left-hand side of the plate – a blue vertical "EU strip" showing the flag of Europe (or, for older-registered cars, the flag of Bulgaria) and, below it, the country code for Bulgaria: BG. The characters displayed in the main field of the plate are: The format is thus XX NNNN YY, where XX (or X) is the province code, NNNN is the serial number, and
Briegleb BG-7 and fabric. The longer wing created stability issues and many aircraft were subsequently modified by either lengthening the tail to increase the tail arm or enlarging the vertical fin. Cockpit modifications were also common. Three BG-7s were completed by the factory and a further 20 kits were sold. The type was never certified and most were amateur-built from factory kits. In 1952 Betsy Woodward Proudfit, flying a BG-7, set the feminine speed record for the triangle, at . The record stood for eighteen years. In March 2011 there were still 2 BG-7s on the Federal Aviation Administration register. Briegleb BG-7