The results of a study to evaluate the potential life-cycle costs and cost savings that could be realized by applying the Digital Avionics Information System (DAIS) concept to future avionic systems were presented. The tasks evaluated included selection of program elements for costing, selection of DAIS installation potential, definition of a life-cycle-cost model, data collection and execution of the model. The results of the analysis indicated that the DAIS approach to avionics integration provided the potential for significant savings. The cost benefits that could be derived from the various DAIS-concept elements for the different life-cycle phases were described. Several tables of data, a bibliography, and a glossary of terms are appended. (Author/HB)