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HIGHLIGHTS ARCHIVE
11.09.11
Division Highlights

Contents
FAA Visits NASA Ames to Discuss Terminal Tactical Separation Assured Flight Environment
FAA members of the Minimum Safe Altitude Warning/Conflict Alert (MSAW/CA) Safety Board visited NASA Ames on November 8th to learn how NASA-developed Terminal-Tactical Separation Assured Flight Environment (T-TSAFE) could fix problems long seen with Conflict Alert (CA), a legacy tactical conflict detection tool in the field. FAA briefed NASA on current problems with CA, which often delivers alerts too late to be useful, sometimes even after the conflict has passed and aircraft paths are diverging. CA also delivers so many false alerts that controllers have become desensitized to the tool and ignore it. T-TSAFE (adapted from en-route TSAFE) uses flight intent information to improve loss-of-separation prediction and significantly reduce false alerts. NASA researchers briefed the FAA on the initial evaluation of T-TSAFE algorithms in a human-in-the-loop simulation. NASA also briefed the FAA on an analytical comparison of CA with a new improved severity-based T-TSAFE, which has the potential to address difficulties associated with mixed Instrument and Visual flight separation rules. The FAA invited NASA researchers to deliver briefings at the next official MSAW/CA Safety Board meeting to be held at NASA Ames Research Center on February 7-9, 2012. (POC: Shannon Zelinski)

NASA Obtains a Research Version of an Operational FAA Traffic Management System
In cooperation with the Federal Aviation Administration (FAA), NASA developed a modifiable research version of the FAA's operational Traffic Management Advisor called the Research Traffic Management Advisor (RTMA). RTMA is directly derived from the Traffic Management Advisor software currently deployed across the United States for time-based arrival metering and tactical departure scheduling. RTMA includes modifications needed to build and run in a Linux research environment, without the monitor and control infrastructure found in the deployed software. RTMA currently supports many NASA research activities including the Precision Departure Release Capability (PDRC) and the FAA terminal metering research at Dallas Love Field. By using a platform similar to the FAA's operational TMA, air traffic research concepts and technologies developed using RTMA will be more easily transferred to the FAA for field-testing and deployment. (POC: Shawn Engelland)

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