In December 2011, Romania and Bulgaria signed an agreement to set up Danube FAB, through which the two countries will have a single airspace.
In 2004, the European Union launched the Single European Sky (SES), a program aimed to create an integrated airspace.
Romanian Transport Minister Alexandru Nazare said in a press release Friday the Republic of Moldova, Serbia, Montenegro and Macedonia showed they are willing to join the program either as observers or as members with full rights.
The minister added that he held talks with his Bulgarian counterpart and decided the four states will be officially invited to join Danube FAB.
The project is worth EUR5.03 million, of which EUR2.5 million represent European funds. The remainder is covered by ROMATSA (Romania) and BULATSA (Bulgaria).