Aversan was selected by a Tier-1 avionics OEM to provide development services for a DO-178B DAL A software test campaign. Aversan was able to support the client by reviewing and correcting test defects discovered from an audit, and developed new tests where gaps were discovered. The NSM test suite covered Unit Tests, Software Integration, and Hardware-Software Integration tests for a multi-platform FADEC application. Tests were written in C++ and Python and executed on an MPC555x processor platform. The project remained within all budget and scheduling requirements, meeting an aggressive 9-month timeline while delivering outstanding performance to the OEM. • Design Assurance Level A