FAA has upgraded airlines in the Republic of Serbia to a Category 1 rating, as it now complies with international safety standards set by ICAO.

The Republic of Serbia has held a Category 2 rating since 2006. According to FAA, a Category 2 rating means a country either lacks laws or regulations necessary to oversee air carriers in accordance with minimum international standards, or that its civil aviation authority—equivalent to the FAA for aviation safety matters—is deficient in one or more areas, such as technical expertise, trained personnel, record-keeping or inspection procedures.

FAA said the return to Category 1 status “is based on a March 2014 FAA assessment of the safety oversight provided by the Civil Aviation Directorate of the Republic of Serbia, and an FAA verification of necessary corrective actions during a follow-on visit to the Republic of Serbia this month. With the International Aviation Safety Assessment Category 1 rating, the Republic of Serbia’s air carriers can establish service to the United States and carry the code of US carriers,” FAA said in a statement.

The Republic of Serbia currently has no carriers providing service to the US.