In this study, the objective is to scientifically examine the usability of multi-user virtual environments as an alternative solution to traditional methods in order to enhance the effectiveness and create widespread opportunities for training applications in aviation, which are difficult and risky to implement on actual aircraft. For this purpose, a virtual environment application was developed, specifically focusing on the examination of Built-In Test Equipment (BITE) test procedures conducted by maintenance personnel during aircraft maintenance. The application included the design of a Multi-Function Control and Display Unit (MCDU) in the virtual environment. The benefits and limitations of the virtual environment application were discussed, highlighting how the challenging and risky working conditions can be efficiently transformed into practical training scenarios in various contexts, promoting the development and reinforcement of skills for personnel. Despite the extensive use of multi-user virtual environments in various fields, it is evident that there is scarce research conducted in the aviation maintenance and repair sector. This study serves as a significant initiative to draw attention to the potential usability of multi-user virtual environments for educational purposes in the aviation maintenance and repair sector.