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STNI

STNISea-Tac Noise.Info

  • Solve for Sea-Tac. Solve for every airport.
  • Since 2016, working to obtain justice for everyone living under the flight path.
  • Less Noise. Cleaner Air. Better Public Health. Compensation.
  • Everything you think you know about the airport is wrong.

TagAirspace Study(26)

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  • 1982-07-27

    Detailed Analysis of Airspace Interactions – Chapter 6

    ★ 33
    Technical analysis of airspace interactions between Sea-Tac Airport and Boeing Field, examining runway capacity models, aircraft delay calculations, and the effects of airspace interactions on airport operations. The document presents detailed capacity and delay calculations using computerized models.
    CategoriesKey Documents TagsAir Traffic Control, Airport Expansion, Airspace Study, Peat Marwick MitchellFolderShared Airspace Study
  • 1981-10-28

    Airspace Study: Sea-Tac International Airport and King County International Airport

    ★ 32
    This 1981 airspace study, prepared by Peat, Marwick, Mitchell & Co., examines how the shared use of airspace between Seattle-Tacoma International Airport (Sea-Tac) and King County International Airport (Boeing Field) affects the capacity of both airports. The two-phase study analyzes projected congestion and delays through the year 2000 and evaluates operational and policy alternatives to reduce airspace conflicts. A public information program was also included to keep the community informed of the study's findings and implications.
    CategoriesHistory, Key Documents TagsAirspace Study, Boeing Field, KCIA, Peat Marwick Mitchell, Sea-Tac AirportFolderShared Airspace Study 1981
  • 2025-10-23

    DCA South of Airport Aircraft Noise and Mitigation Study: Recommendations and Noise Analysis

    This October 2025 report from the DCA South of Airport Aircraft Noise and Mitigation Study examines how post-Metroplex airspace changes increased aircraft overflights and noise exposure for residents south of Ronald Reagan Washington National Airport, including communities in Alexandria, Fairfax, and Prince George's Counties. The study, conducted by aviation consultancy Vianair, presents recommendations and noise analysis aimed at reducing the impact of arrival and departure flight paths on affected residential populations. Note: This document pertains to DCA (Washington, D.C.), not Sea-Tac Airport.
    TagsAirspace Study, Metroplex, Noise Mitigation, Reagan National Airport, VianairFolderVianair
  • 2025-02-20

    FAA JO7400.2R Handling Airspace Matters

    FAA Order JO 7400.2R, effective February 20, 2025, sets out procedures for managing U.S. airspace, covering topics such as objects affecting navigable airspace, airport airspace analysis, terminal and en route airspace, special use airspace, and laser and rocket operations. The order updates policies related to surveillance facilities and airport proposals to reflect modern, contractor-supported National Airspace System technologies. Note that this document addresses broad national airspace management procedures and does not specifically cover Sea-Tac Airport noise policy.
    TagsAir Traffic Control, Airspace Study, FAA, Federal Register, NEPAFolderUSC & CFR
  • 2023-08-14

    FAA Jet Route Chart Centered on Seattle-Tacoma Area – 14/2202z

    A National Weather Service (NWS)-branded interactive aviation map showing FAA high-altitude jet routes (J-routes) radiating from a central fix near Seattle-Tacoma International Airport (Sea-Tac), with surrounding cities including Seattle, Bellevue, Renton, Kent, Tacoma, and Olympia visible. The map is timestamped 14/2202z and displays multiple labeled jet airways (J20, J34, J90, J523, etc.) overlaid on a terrain basemap of the greater Puget Sound region.
    TagsAir Traffic Control, Airspace Study, FAA, Map, Sea-Tac AirportFolderAviation
  • 2023-03-07

    Aircraft noise mitigation study and plan: The City of Alexandria, VA

    This 2023 study, prepared by aviation consulting firm Vianair for the City of Alexandria, Virginia, assesses aircraft noise impacts on communities south of Ronald Reagan Washington National Airport (DCA) and proposes solutions acceptable to the FAA. The work involves analyzing historical flight operations and noise exposure data from 2014–2019, examining changes in flight paths and procedures, and developing recommendations to reduce noise for residents in Alexandria, Fairfax County, and Prince George's County. The findings are intended to be accessible to the general public and local policymakers, not just aviation experts.
    TagsAirspace Study, FAA, Noise Mitigation, Reagan National Airport, VianairFolderVianair
  • tracon-uRw2a

    Diagram illustrating the FAA's layered air traffic control system, showing the handoff of aircraft between Tower (airport), TRACON (Terminal Radar Approach Control), and En Route Center facilities. The graphic depicts a flight path arc from departure to arrival, with corresponding ground facility silhouettes for each control segment.
    TagsAir Traffic Control, Airspace Study, En Route Center, FAA, TRACONFolderFAA
  • 2019-10-10

    Regional Aviation Baseline Study: Technical Workshop #2 Presentation

    This document presents the agenda and materials for the second technical workshop of the Regional Aviation Baseline Study, held on October 10, 2019. The workshop covered key aviation metrics across commercial service, air cargo, general aviation, and multimodal access, as well as an analysis of regional aviation needs including capacity versus demand, challenges, and opportunities by sector. A regional airspace analysis and discussion of next steps were also included.
    TagsAirspace Study, General Aviation, PSRC, Regional Aviation Baseline StudyFolderRegional Aviation Baseline Study
  • 2019-02-01

    Regional Aviation Baseline Study

    The Puget Sound Regional Council launched a two-year Regional Aviation Baseline Study, funded by a $1.6 million FAA grant, to assess the aviation system across King, Pierce, Snohomish, and Kitsap counties. The study examined existing airport roles, economic contributions, airspace capacity, and community impacts to build a technical foundation for future regional aviation planning decisions. Conducted in phases from 2019 to 2020, the study included stakeholder engagement, public meetings, and a final report outlining strategies for accommodating future aviation demand in the central Puget Sound region.
    CategoriesMeetings TagsAirspace Study, PSRC, Puget Sound Regional Council, Regional Aviation Baseline StudyFolderSP #1
  • 2005-06-24

    ESSB 5121 proposed project schedule, Phase I: Airport facility, air cargo, passenger, and air space capacity assessment

    This draft project schedule outlines the planned timeline for Phase I of Washington State's airport facility, air cargo, passenger, and airspace capacity assessment under ESSB 5121, running from May 2005 through August 2006. Key milestones include advertising for a consultant, developing a detailed scope of work, securing an FAA grant, and completing a final Phase I report by July 1, 2006. WSDOT Aviation was responsible for submitting the findings to legislative committees, the governor, transportation commission, and regional planning organizations.
    TagsAirspace Study, Capacity, FAA, RCAA, Washington State Legislature, WSDOTFolderRCAA

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Upcoming Events

  • Stay Grounded Event: Night trains, not night planes!
    Add to CalendarMSunday Sep 13: 12:00am
    Ntnnp social media3

    For the past two years, more than 220 initiatives from 15 countries have declared September 13th as the International day for the ban of night flights at airports. In parallel, activists across Europe have been gathering for pyjama parties for night trains – coordinated in 2024 and 2025 by Back on Track and Stay Grounded.

    [...]
  • Burien Airport Committee Meeting September 15, 2026
    Add to CalendarMTuesday Sep 15: 6:00pm
    400 SW 152nd St, Burien, WA 98166
    Burien airport committee 15 sep 2026 agenda pdf pdf

    a) Part 150 Noise Study (Emily Inlow-Hood) — 15 minutes
    b) SAMP Update and Next Steps (Brian Davis and Sarah Moore) — 15 minutes
    c) Legislative Updates — 10 minutes
       • SCA (Sarah Moore)
       • Work with Sen. Orwall (Brian Davis)
    d) StART Reorganization (Jeff Harbaugh and Karen Veloria) — 10 minutes

    [...]

[See all...]


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Issues

Sea-Tac Airport is currently undergoing the largest and longest expansion in its history, collectively known as the Sustainable Airport Master Plan (SAMP). Some of it you can already hear, but you’re probably not aware of what it all means. Here’s what you need to know.
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Read This!

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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