Leasing company Nordic Aviation Capital has confirmed it concluded an agreement with Air Serbia to supply the carrier with three ATR72-600 turboprop aircraft. They will bring Air Serbia’s total fleet of ATR72-600s to ten, enabling it to expand regional operations and bolster frequencies on existing routes. “The optimal size of the ATR72 fleet, I would say, is ten because then you can start benefiting from some economies of scale. The ATRs perform extremely well; they are extremely profitable. We went through a massive project and completely grounded the ATR72-200s and -500s, replacing them with the -600s instead. We will continue to grow this regional fleet as it is important for higher frequencies and improving hub connectivity and ultimately helps to expand long-haul.”, Air Serbia’s CEO, Jiri Marek, said last year.