Innovative methods of man/machine communication will be proposed, implemented and studied experimentally within the context of an existing high fidelity PC-based ATC simulator (TRACON tm). The specific possibilities include, but are not limited to, mouse/trackball-based popup and pulldown menus and dialing boxes, voice i/o for database 1ookup, digital communications including a tactical communications manager, plan-ahead monitor, and 3-D display hardware technology. A comprehensive design for Phase II further development and experimentation using the best of these concepts will also be included.Anticipated Results/Potential Commercial Applications Of Results:New man/machine interfaces and communication technologies will be identified that could be incorporated into the upcoming 1990's ATC system to make the ATC specialist's automation management function easier, clearer, and thereby safer