The Modeling paradigm for Integrated Modular Avionics Design (MIMAD) is an extensible component-oriented framework that enables high level models of systems designed on integrated modular avionics architectures. It relies on the generic modeling environment (GME), a configurable object-oriented toolkit that supports the creation of domain-specific modeling and program synthesis environments. MIMAD is built upon component models dedicated to avionic applications design, which are defined within the POLYCHRONY platform. Hence, its descriptions can be transformed into POLYCHRONY's models in order to access the available formal tools and techniques for validation. Users do not need to be experts of formal methods (in particular, of the synchronous approach) to be able to manipulate the proposed concepts. This contributes to satisfying the present industrial demand on the use of general-purpose modeling formalisms for system design. This paper first presents the main features of MIMAD V0. Then, it illustrates the use of the paradigm to design a simple application example within GME.