On Thursday February 8, at 7.30 pm, there was a critical incident between two aircraft in the region of Annecy, France, just south of Geneva. The distance between the two aircraft fell below prescribed separation minima. Air traffic control in this sector of French airspace is delegated to the Swiss air navigation services. A Hercules of the Algerian airforce was on an overflight towards Lyon on flight level 250 (7,620 metres above sea level) when a Tupolev of the State Air Company Berkut Kazakhstan, which had taken off from Grenoble airport, received clearance to climb to flight level 260 (7,924 metres above sea level). As a result, there was a close encounter between the two aircraft as the two flight paths crossed.