A MAJOR INFORMATION SYSTEMS MODERNIZATION EFFORT IS DESCRIBED. THE EFFORT IS AIMED AT IMPROVING THE DELIVERY OF INFORMATION TO THE SHOP FLOOR. THIS STUDY CONCENTRATED ON THE NAVISTAR SPRINGFIELD ASSEMBLY PLANT AND THE PROBLEM OF IN-PLANT INFORMATION SYSTEMS AND SUPPORT OF THE SYSTEMS. THE STUDY WAS PERFORMED OVER A SIX-MONTH PERIOD WITH A SMALL TEAM OF TWO NAVISTAR PERSONNEL AND TWO CONSULTANTS FROM SAIC'S SOLION DIVISION. THE ANALYSIS USED USAF ICAM DEFINITION LANGUAGE FUNCTIONAL (IDEFO) AND INFORMATION (IDEFI) MODELING AS THE ANALYSIS METHODOLOGIES TO ESTABLISH WORKING MODELS FOR CONSISTENCY AND COMMUNICATION. THE STUDY BEGAN WITH AN EVALUATION OF EXISTING SYSTEMS WHICH SUPPORTED THE PLANT INTERNALLY AND EXTERNALLY. SPECIFIC REPORTS, FORMS, AND DATA SCREEN WERE STUDIED AND CATERGORIZED. KEY PERSONNEL IN THE SHOP WERE INTERVIEWED. THE PROCESS WAS ENLIGHTENING TO ALL INVOLVED. THERE WER