The new fighter for the Brazilian Air Force (FAB), the F-39 Gripen E, has begun performing supersonic flight tests in Brazil. The aircraft, based at the Gripen Test Flight Centre (GFTC) at Embraer's facilities in Gavião Peixoto (SP), has been carrying out the flights over the designated test areas north west of the base. All flights follow authority-defined procedures and take place at high altitude, above 5.000 meters. Read more here