The PZL TS-11 Iskra (English: Spark) is a Polish jet trainer aircraft, used by the air forces of Poland and India.  It is notable as the main training aircraft of the Polish Air Force, and as the oldest jet aircraft still in service in Poland.  The aircraft was designed in response to a Polish Air Force requirement for a jet trainer.  The main designer was Tadeusz Soltyk – hence a designation letters TS.  Work started in 1957, the first prototype powered by an imported British Armstrong Siddeley Viper 8 of 7.80 kN 91,750 lbf) was flown on February 5, 1960.

HAMM acquired the plane as a donation from life member, Harley Wilke in January 2015.