Urgent measures to improve the safety of civil aviation flights discussed Transport and Telecommunications Minister Plamen Petrov and Zahari Alexiev, chief of the Directorate of Civil Aviation Administration. On Tuesday Petrov demanded Alexiev`s resignation for his `negligence` but, following the meeting, he would not accept it. According to officials from the Transport Ministry, the demand for Alexiev`s resignation was probably not triggered by any specific incident but by the inadequate reaction to last week`s crash near Dolna Banya (Southern Bulgaria) when an instructor and his trainee died. Newspapers run several possible explanations. One of these is that an An-12 of the Moldovan Airlines with imperfect papers had being repaired in Bulgaria. Alexiev could not be found for comment. At an earlier meeting with experts of the Civil Aviation Administration Petrov demanded that they draft an urgent report on the state of the Bulgarian air fleet and on the safety at all airports in the country.