United States Department of Transportation
i
Human Factors Evaluation of the Implementation of the Navigation Reference System (NRS), Phase 2
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2011-08-29
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[PDF-1.67 MB]
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Edition:Final Report
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Abstract:The Navigation Reference System (NRS) and NRS waypoints were developed as part of the high altitude airspace redesign efforts to support area navigation and the Next Generation Air Transportation System (NextGen) initiative. NRS waypoints are RNAV waypoints which form a grid and are identified through the intersection of lines of latitude and longitude. Currently totaling around 1,600 waypoints, they are deployed in all 20 ARTCCs throughout the continental United States; current density is one waypoint spaced every 30 minutes of latitude and every 2 degrees of longitude. A number of human factors issues with regard to NRS waypoints were identified through an earlier phase of this study. The most significant issues discovered included: NRS Waypoint Nomenclature; NRS Waypoints in Charts, Displays, and Databases; as well as other potential usability issues. This project developed recommendations to resolve the NRS waypoint issues and evaluated one recommended solution for waypoint nomenclature. Implementing these recommendations will improve usability of NRS waypoint navigation in the NextGen National Airspace System. Additional information about the NRS is available in FAA Order 7350.9, Chapter 1, Section 6, Paragraph W. (https://www.faa.gov/air_traffic/publications/atpubs/locid_html/chap1_section_6_paragraph_W.html)
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