On the night of August 19, 2025, technical failures in the air traffic control systems at Greek airports led to significant disruptions. The radar system located on Mount Merenda, covering the Athens airport terminal area, lost signal, and issues were reported with the transmitters on backup frequencies used for aircraft communication. This incident caused a series of flight delays as staff struggled to maintain safety amidst the technical problems.

Five months later, on January 4, 2026, a major blackout occurred in the Athens Flight Information Region (FIR), leading to further investigations into the incidents. The prosecutor's office launched an inquiry into the matter, and an administrative investigation was initiated. A committee was established to examine the situation, and their report highlighted the outdated technology of the existing Voice Communication System (VCS), suggesting that the issues were systemic and likely the result of a lack of investment in modernizing critical infrastructure.

These events raised serious questions about the reliability of Greece's air traffic control systems, particularly in the context of increased air traffic. As the aviation sector conforms to growing demands, the findings underline the urgent need for enhancements and upgrades to ensure safety and efficiency in air travel. The ministry is under pressure to address these concerns promptly, as continued failures could impact public trust and the overall safety of air travel in the region.