MSC.Software today announced that Spirit AeroSystems, the world's largest independent supplier of structures for commercial aircraft, has selected MSC.MasterKey Licensing System for its virtual product development processes. Spirit AeroSystems will utilize MSC.MasterKey tokens for comprehensive and on demand simulation capability with MSC.Nastran, MSC.Marc, and MSC.Patran. MSC.MasterKey is a flexible solution for manufacturing organizations requiring single source access to the diverse range of VPD solutions which MSC.Software's simulation software suite has to offer. These solutions will help Spirit AeroSystems engineers solve complex product development challenges and evaluate more design variants within a single, unified framework. "We are pleased Spirit AeroSystems has further invested in our partnership by increasing their investment in our integrated enterprise solutions for their virtual product development needs," John Howaniec, senior vice president, Americas sales operations, MSC.Software. "We take great pride in building and maintaining customer relationships and this new agreement validates our commitment to provide customers with industry leading solutions." For more information on MSC.Software's solutions, please visit its Web site.