Systems Engineering (SE) approach is a tried and tested approach that promotes and coordinates all appropriate processes to design, develop and test a system. These SE processes have been defined in many standards which are not always consistent with each other and often provide only generic indications. Therefore, companies seeking to apply the SE approach must answer themselves the following questions: how to tailor these generic processes to their company? What methodology must be applied to deploy SE processes? How to ensure the success of this deployment? The purpose of this paper is to present the two main principles of a SE processes deployment methodological approach currently under development and applied to a helicopter manufacturer. These principles are: 1) The description of the set of activities necessary for the deployment, 2) The main concepts necessary to the approach, gathered and shortly formalised in a global meta-model.
