On May 16, 2024, the "Technology Readiness Levels" workshop was held in the Gray Hall at FER, organized by ICENT for HAMAG-BICRO - Croatian agency for SMEs, Innovations and Investments. As part of this workshop, prof. dr. sc. Stjepan Bogdan delivered a lecture on the application of Technology Readiness Levels (TRL) in the context of drone-based inspection systems.