The L-39 Albatros is a low-wing, high-performance jet aircraft that doubles as a trainer and light attack aircraft. The Albatros was developed in Czechoslovakia in the 1960s to replace older L-29 jet trainers. Powered by an Ivchenko AI-25TL turbofan engine, the L-39 has a top speed of Mach 0.80, a service ceiling of 11,000 m (36,100 feet), and can pull up to 8 G. Although primarily used as a trainer and light attack aircraft, the L-39 has also become popular with several aerial acrobatics demonstration teams.