United States Department of Transportation
i
Flight Deck Perspectives on Performance-Based Navigation (PBN) Departure Procedures
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2024-08-01
[PDF-1.77 MB]
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Edition:Final Report
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Abstract:This project examines flight deck human factors considerations for Performance Based Navigation (PBN) departure procedures (DPs), focusing on issues relevant to the Multiple Airport Route Separation (MARS) concept. MARS will expand the use of PBN routes in the terminal area to improve the flow of traffic in busy areas with multiple airports. We collected data from three sources to address research gaps identified from an earlier literature review. We learned about current issues with DPs from interviews with technical pilots and an analysis of 20 records curated from the Aviation Safety Reporting System (ASRS) database. We gathered data about factors that contribute to flightpath deviations on DPs from the ASRS records and from discussions with nine line pilots. We also gathered data on assessment of traffic threat by showing the line pilots simulated traffic overlaid on static navigation display images. Results indicate that there are many explanations for why pilots might deviate from a planned PBN departure route, some intentional and some unintentional. Our limited data on traffic-threat assessment indicate that there are conditions under which pilots may seek more information, or even prepare to take an action to avoid traffic by modifying their flightpath if traffic is in an unexpectedly close relative position.
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