As the complexity of modern software systems increases, changes in software have become crucial to the software lifecycle. For this reason, it is an important issue for software developers to analyze the changes that occur in the software and to prevent the changes from causing errors in the software. In this paper, mutation testing as software test analysis is examined. Mutation tests have been implemented on open-source Java projects. In addition, for aviation projects, emphasis is placed on performing change impact analysis processes in compliance with the certification based on DO-178C processes.