The Aero L-59 Super Albatros is a Czech military jet trainer developed from the firm's earlier L-39 Albatros. Compared to its predecessor, it featured a strengthened fuselage, longer nose, a vastly updated cockpit, advanced avionics (including head-up display), and a more powerful engine. At the time of its first flight on 30 September 1986, it was designated the L-39MS.