An ad hoc committee operating under the auspices of the Aeronautics and Space Engineering Board will conduct a review to evaluate how well the NASA Institute for Advanced Concepts (NIAC) developed revolutionary aeronautical and space concepts that could dramatically impact how NASA develops and conducts its mission. NASA funding for NIAC ended in 2007, and Congress has directed the NRC to review NIAC performance. The review will help guide NASA in assessing NIAC's processes and results and in shaping future efforts in this area.