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	+ Home Search Aviation Systems		System Portfolio Analysis (SPA) Highlights - Fiscal Year 2013 Research was also published at the AIAA Aviation 2013 conference on the effectiveness of incentivizing ADS-B equipage through preferential merging. Preferential Merge Re-sequencing is a “best-equipped best-served” air traffic management policy meant to accelerate the adoption of Automatic Dependent Surveillance-Broadcast (ADS-B) Out by giving an operational incentive to airlines, to invest in upgrading their fleet. Preferential Merge Re-sequencing is accomplished by re-sequencing the arrival order at en-route merge-fixes, favoring high-equipped aircraft over low-equipped aircraft, thus reducing flight time for high-equipped aircraft. In this study, Preferential Merge Re-sequencing was simulated using historical data for flights into Phoenix Sky Harbor International Airport, focusing on a benefit analysis for nationwide as well as regional airlines. NASA's ACES capabilities, as well as other simulation systems, were the subject of discussions with the FAA supporting the Office of the Chief Scientist for Software/Natesh Manikoth, in September 2013. Aviation Systems Division researchers demonstrated the ACES–Augmented with Realistic Technologies (ACES ART) prototype covering NASA's airport Surface Operations Simulator and Scheduler (SOSS), research Traffic Management Advisor, and ACES.
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