The standard 1553 Bus Controller and related engine test facility improvements will give NAPC a standard controller interface for testing engines equipped with FADECS. This effort will make hardware and software improvements to the operator station to add real-time data display, consistent operator test control, record/playback functions and rapid configuration change capabilities. The application of advanced domain modeling and QFD techniques will improve the requirements analysis process. This will result in a balanced analysis of the total system to ensure system changes result in improvements to key problems.