A Highline Forum presentation examining whether aircraft arrival numbers at Seattle-Tacoma International Airport have decreased compared to a few years earlier. The analysis uses one month of arrival flight track data from June 2013, June 2015, and June 2017 across Sea-Tac's three parallel runways (16L/34R, 16C/34C, and 16R/34L). June was chosen as a representative month because it typically features a balanced mix of north and south flow operations, Instrument Landing System (ILS) and visual approaches, and an average volume of aircraft traffic.

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A presentation prepared for the Highline Forum addressing a question about whether aircraft arrivals at Sea-Tac Airport are lower compared to a couple of years prior. The document includes an aerial overview of Sea-Tac Airport’s runway layout and details the data analysis methodology, using one month of arrival flight track data from June 2013, June 2015, and June 2017 for each runway end.

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As the source for federal transportation grants, the Puget Sound Regional Council was charged with developing a system to meet the growing need for commercial aviation. When the search for a second airport failed, they authorized the Port of Seattle to build the Third Runway, with a mandate to develop a noise abatement and mitigation program. In their effort to stop the Third Runway, the ACC argued over every detail of the Port's efforts--including property buyouts and sound insulation. The dispute was meant to be settled by a three member Expert Arbitration Panel. This is their final report. It finds 2-1, that the Port's program was insufficient in several respects. Despite that, funding for the Third Runway was approved by the PSRC, and the 'Port Package' program, proceeded largely unchanged. Expert Arbitration Panel's final decision finding that the Port of Seattle had not shown sufficient reduction in real on-the-ground noise impacts to satisfy noise reduction conditions required for approval of a third runway at Sea-Tac International Airport. The majority decision concluded the Port's noise abatement programs were insufficient despite being impressive in scope.

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