The Aeroprag engines were built from 1998 by this company until 2003 when it became known as Alfaprag (see).

-As described in "Aero Prag" two engines were made by this brand. They were very similar in performance with four cylinders giving 85/86 cv at 2900/2950 rpm.

-First the AP-45 was built and then the KT-422. The latter was renamed TP-422 by Alfaprag.

“Aeroprag KT-422”