The Aero L-159 ALCA is a single-engine single-seat light ground-attack and trainer aircraft produced by the Czech manufacturer AERO Vodochody a.s.. The L-159B and L-159T1 are two-seat training aircaft variants.
The Aero L-159 is a development of the Aero L-39 Albatros. ALCA stands for Advanced Light Combat Aircraft. The variant L-159T1 is a two-seat trainer modification of the L-159A for use by the Czech Air Force.