The use of computational methods for three-dimensional flow design and analysis at the Boeing Company is presented. A range of computational "tools" consisting of "production" tools for everyday use by project engineers, "expert user" tools for special applications by computational researchers, and a new "emerging" tool which may see considerable use in the near future is described. These methods include full potential and Euler solvers, some coupled to three-dimensional boundary layer analysis methods, for transonic flow analysis about nacelle, wing/body, wing/body/strut/nacelle, and complete airplane configurations. As the examples presented show, such a tool box of codes is necessary for the variety of applications typical of an industrial environment. Such a tool box of codes makes possible aerodynamic advances not previously achievable in a timely manner, if at all.