https://www.itamilradar.com/2020/07/09/new-turkish-flight-to-misrata-from-syrian-border/
Turkey has deployed various domestically produced systems in the southeast region. It could be delivering some of these to Libya.
My bet is that they are delivering either the Bora tactical ballistic missile system or the HISAR-O medium altitude air defence system. Both would greatly increase Turkey's effectiveness in Libya. Check the link for details.