IGF::OT::IGF THE PROPOSED EFFORT IS TO UPGRADE AND ENHANCE THE FUNCTIONALITY OF THE PROBABILISTIC NAS PLATFORM (PNP) SIMULATION SOFTWARE TOOL PREVIOUSLY DEVELOPED AT PRIVATE EXPENSE BY SAAB SENSIS. CURRENTLY, THE PNP SIMULATION SOFTWARE TOOL HAS VERY BASIC MODELING CAPABILITIES REGARDING THE AIRPORT TERMINAL AREA. THE PNP TERMINAL AREA MODELING SOFTWARE REQUIRES A SERIES OF ENHANCEMENTS TO SUPPORT PLANNED STUDIES. THE FOLLOWING ENHANCEMENTS ARE REQUIRED UNDER THIS ACTION: A. INCORPORATE NEW WAKE SPACING STANDARDS INTO THE PNP TERMINAL AREA MODELING. THE FEDERAL AVIATION ADMINISTRATION (FAA) HAS RECENTLY APPROVED A RE-CATEGORIZATION (RECAT) OF WAKE TURBULENCE SEPARATION MINIMA FROM THE CURRENT STANDARD TO A NEW STANDARD. THE PNP SIMULATION SOFTWARE TOOL NEEDS TO BE ENHANCED TO UTILIZE THE MILES-IN-TRAIL SEPARATION STANDARDS AND TO USE THE AIRCRAFT CATEGORIZATIONS ASSOCIATED WITH THE NEW RECAT STANDARD. B. CREATE A FRAMEWORK TO ALLOW THE AIRPORT CONFIGURATION (I.E., RUNWAY USAGE, AVAILABLE ARRIVAL AND DEPARTURE ROUTES) TO BE CHANGED DYNAMICALLY DURING THE SIMULATION. THE DEVELOPMENT OF AN APPLICATION PROGRAM INTERFACE (API) IS NEEDED TO ALLOW A CLIENT SOFTWARE PROGRAM TO EXCHANGE INFORMATION WITH PNP AND REQUEST AN AIRPORT CONFIGURATION CHANGE WHEN NEEDED. C. ENHANCE THE TERMINAL AREA MODEL TO SUPPORT THE MODELING OF WINDS IN THE AIRPORT TERMINAL AREA. D. ENHANCE THE TERMINAL AREA MODEL AND REPORTING TO SUPPORT FLIGHT FUEL BURN CALCULATIONS IN THE TERMINAL AREA