This tool is specifically targeted to support projects that involve complex spacecraft and/or complex missions involving a fairly high level of automation and a requirement for fault tolerance and associated fault management. Projects Odyssey currently works on, including Orion and Commercial Crew and Cargo vehicles, are prime candidates for this tool, along with other complex spacecraft for which NASA is involved in the development. The proposed fault management and planning tool has application for both manned and unmanned missions for which fault tolerance is required for safety or reliability reasons. This tool would be highly useful to other complex system developers including the DoD, starting with spacecraft and expanding to other systems such as launch vehicles, aircraft, ground systems, and naval systems. This tool could also be folded into a commercial reliability or quality management suite of tools as a module/plug-in. It can be expanded to include customers in the manufacturing and plant management (oil, chemical, etc.) industries through coordination with these software suite developers or as stand-alone tool to support these industries by teaming with an organization with domain expertise.