SCADE Version 6 is both a language and a Safety Critical Development Environment that brings a new Unified Modeling Style that provides a seamless and safe flow from system to software engineering. This flow relies on strong foundations where safety is considered at each step that allows engineers to focus on key issues whilst removing a significant part of the burden of the development process.

SCADE6 is a model based tool that has been designed to cope with engineers needs together with safety constraints expressed in several standards such as D0178-B, EN50128 or IEC 61508.

This paper presents SCADE version 6 and points out the key factors we have addressed during the language definition, modelling environment and code generation development in order to cope with a safety critical development flow.