Potential NASA Commercial Applications: The need for the proposed capabilities is emerging as NASA seeks to provide higher quality fault management systems for its missions. The model-based fault detection and isolation system could support current and future programs with applications on the ground, in support of recovery operations, and in space, providing onboard autonomous fault detection and isolation. The fault management core diagnostic algorithms are general in nature and do not need tailoring to specific programs. User-supplied models allow customization to a particular target. Thus the developed system will be applicable to a very broad range of NASA mission classes from small to large, near-Earth to interplanetary, risk-adverse, and experimental. Ultimately, NASA and industry partner fault management products will enjoy a larger customer base. The potential market includes a wide range of customers from systems engineering, mission planning, and operations groups in all NASA centers especially ARC, JPL, and MSFC.