Due to higher demand we having been recently experiencing we developed and implemented, along with many other systems, a UPRT module (Upset and Recovery Training module) for a FFS Letov simulator operated by our client Let's Fly company at Ostrava Mošnov airport without interfering with its functioning and systems. The subject of the upgrade consisted in HW implementation and development of SW for execution of scenarios according to UPRT and recording of flight data for debriefing. This upgrade was fully certified by Czech EASA inspectors.