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Cockpit Display System (CDS) suppliers need to now prepare for the cockpits of the future. The architecture, design and ergonomics of the cockpits have to be re-assessed in order to place the pilot at the center of the system, while taking into account the increasing complexity of the systems. Human Machine Interfaces (HMI) have to be simplified and made more intuitive. Thus, there is a need for dedicated HMI design tools and human-factor-oriented processes that are able to support both the required flexibility in the display creation for various types of interactive displays and the increasing demand for safety in avionics displays. This paper presents a COTS approach to these needs, which combines the SCADE Display model-based HMI software design solution, designed from the ground up for displays with safety objectives, with an associated prototyping and development process largely based upon human factors assessment.