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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.

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  • 2025-09-20

    Revealed: ‘Corporate capture’ of UN aviation body by industry

    Exclusive: Industry delegates outnumbered climate experts by 14 to one at recent ICAO meeting, thinktank says Damian Carrington Environment editor Fri 19 Sep 2025 01.00 EDT The UN aviation organisation has been captured by the industry, a report has concluded, leading to the urgent action required to tackle the sector’s high carbon emissions being blocked. Industry
    CategoriesFrom The Web, News Stories TagsGuardian, ICAO
  • 2024-11-08

    RECAT-EU European Wake Turbulence Categorisation and separation minima on approach and departure

    This document presents the European Wake Turbulence Categorisation and Separation Minima on Approach and Departure (RECAT-EU) system, available for operational deployment. It provides information about deployment benefits, including the possibility to operate partial or hybrid versions combining RECAT-EU with ICAO legacy minima.
    TagsAir Traffic Control, Airports, ICAO, Wake Recat
  • Eurocontrol recat eu edition 2 0 pdf
    2024-11-08

    Recat-eu european wake turbulence categorisation and separation minima on approach and departure

    This document presents the European Wake Turbulence Categorisation and Separation Minima on Approach and Departure (RECAT-EU) system, available for operational deployment. It provides information about deployment benefits, including the possibility to operate partial or hybrid versions combining RECAT-EU with ICAO legacy minima.
    TagsAir Traffic Control, Airports, ICAO, Wake Recat
  • 2024-08-08

    Air cargo players want ‘cohesion and consistency’ in how aviation reports emissions

    By Charlotte Goldstone 12/08/2024 Current CO2 air cargo emission calculating methodology has been compared to the VW emissions scandal, with a lack of standardisation allowing passenger ‘greenwashing’ at the expense of cargo.  The disparity between IATA and ICAO’s baseline figures for calculating air cargo emissions could be resulting in false sustainability data, making passenger operations
    CategoriesFrom The Web TagsClimate, IATA, ICAO, The Loadstar
  • 2024-05-07

    The basics of noise metrics

    This document explains how aircraft noise is measured using decibel-based metrics such as DNL, CNEL, and SEL, and highlights that the FAA's accepted noise threshold of 65 dB exceeds the World Health Organization's recommended limits of 50–55 dB outdoors and 30–35 dB indoors. It also notes that standard metrics like SEL fail to capture the cumulative impact of repeated aircraft overflights. The international aviation body ICAO recommends a four-part 'Balanced Approach' to managing airport noise, encompassing noise reduction at the source, land-use planning, operational procedures, and operating restrictions.
    TagsFAA, ICAO, Noise, WHO, World Health Organization
  • 2023-05-02

    Sustainable aviation fuels / Addressing local air quality

    Airlines for America presented at the 2023 Aviation Noise & Emissions Symposium at UC Davis, outlining U.S. airlines' environmental record and climate commitments, including a goal to reach net-zero carbon emissions by 2050. The presentation highlighted a 94% reduction in significant noise exposures since 1975, major improvements in fuel efficiency, and a target to make 3 billion gallons of sustainable aviation fuel available by 2030. Key pathways to further reduce emissions include new aircraft technology, operational improvements, modernized air traffic control, and the long-term potential of electric, hybrid, or hydrogen-powered flight.
    TagsAviation Noise & Emissions Symposium, CORSIA, IATA, ICAO, Sustainable Aviation Fuels
  • Study Finds Outsized Corporate Influence on UN Aviation Emissions Talks

    The supporting report can be found here: https://seatacnoise.info/im_aviation_report_10-22/
    CategoriesFrom The Web TagsCORSIA, ICAO, International Civil Aviation Organization, Kyoto Protocol, Sustainable Aviation Fuels
  • Corporate Capture and the UN International Civil Aviation Organization

    See coverage in Politico and Eco Business. How corporate interests influence global climate policy at the UN body for aviation New analysis finds the aviation industry has an outsized influence over global climate rules for the sector amid limited public scrutiny, according to a detailed analysis of corporate engagement and transparency rules at the UN’s aviation agency. The
    CategoriesFrom The Web TagsICAO, InfluenceMap, International Civil Aviation Organization
  • 2022-10-01

    Corporate capture and the UN International Civil Aviation Organization

    A 2022 report by InfluenceMap examines how aviation industry interests shape climate policy at the UN's International Civil Aviation Organization (ICAO), finding that 31% of delegates at recent climate negotiations represented industry. The report highlights that ICAO's limited transparency practices—including non-disclosure agreements, restricted media access, and undisclosed delegate affiliations—allow corporate influence to steer global aviation emissions policy. As a result, ICAO has prioritized carbon offsetting over direct emissions reductions, with global aviation CO2 emissions projected to grow by 190–277% between 2015 and 2050.
    TagsClimate, IATA, ICAO, InfluenceMap, International Civil Aviation Organization
  • How a 1940s treaty set airlines on a path to high emissions and low regulation

    Before the pandemic, aviation was on course to be the UK’s most polluting sector and produce as much as 22% of global emissions by 2050. The industry is suffering from low demand due to coronavirus restrictions, but without meaningful policy changes, flight numbers and emissions are expected to return to pre-COVID-19 levels by 2024. When accounting for emissions, aviation is
    CategoriesFrom The Web TagsAviation Fuel, Commercial Aviation, ICAO, International Civil Aviation Organization, Sustainable Aviation Fuels

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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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