Aero L-39 Albatros

The Aero L-39 Albatros is a high-performance jet trainer aircraft developed in Czechoslovakia to meet requirements for a "C-39" (C for cvičný – trainer) during the 1960s to replace the L-29 Delfín. It was the first of the second-generation jet trainers, and the first turbofan-powered trainer produced, and was later updated as the L-59 Super Albatros and as the L-139 (prototype L-39 with engine Garrett TFE731).
 The design is still produced in an evolved state as the L-159 ALCA, more than 2,800 L-39s have served with over 30 air forces around the world. The Albatros – the most widely used jet trainer in the world – is versatile, seeing duty in light-attack missions as well as in basic and advanced pilot training.