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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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  • 2025-04-24

    Trump’s Transportation Secretary Sean P. Duffy: Follow the Law

    Thursday, April 24, 2025 WASHINGTON, D.C. – U.S. Transportation Secretary Sean P. Duffy issued a reminder to all recipients of federal transportation funding that they must comply with federal laws. Non-compliance may lead to enforcement actions. “Federal grants come with a clear obligation to adhere to federal laws,” said U.S. Transportation Secretary Sean P. Duffy.
    CategoriesFrom The Web TagsAIP, FAA, USDOT
  • 2025-04-18

    Roundtable engagement guidance: How the FAA engages with Airport and Community Roundtables

    This FAA guidance document explains how Airport and Community Roundtables work as forums where local governments, communities, and aviation stakeholders can collaboratively discuss concerns about nearby airport operations. The FAA participates in these roundtables to provide technical expertise but does not vote on issues, and roundtables can submit formal recommendations for changes to flight procedures or airspace operations. Any recommended changes must go through a thorough FAA review process, including safety and environmental assessments, and can take several years to implement.
    TagsAir Traffic Control, community engagement, FAA, Noise Abatement Procedures, RoundtableFolderFAA
  • 2025-03-30

    Why Airline Pilots Feel Pushed to Hide Their Mental Illness

    Is the F.A.A. really ensuring safety by disqualifying pilots who receive a diagnosis or treatment? Troy Merritt, a pilot, sought professional help for his mental-health challenges and then had to go through an arduous process to regain his certification to fly… Troy Merritt, a pilot for a major U.S. airline, returned from his 30th birthday
    CategoriesFrom The Web, News Stories TagsCommercial Aviation, FAA, New York Times, podcasts
  • Lee Zeldin, EPA Administrator, Testifying at Congressional Hearing

    TagsEPA, FAAFolderEPA
  • 2025-02-26

    StART SIRRPP Update: Interior DNL Eligibility Threshold and Acoustic Testing Results — Slide 14 (February 26, 2025)

    Slide 14 of a presentation on acoustic testing for a Sea-Tac Airport noise insulation program, explaining that interior DNL (calculated as Exterior DNL minus Noise Level Reduction) is the eligibility metric, with a threshold of 45dB DNL. All 30 homes tested fell below the FAA's 45dB DNL interior noise threshold, including five Pre-1993 homes evaluated under the FAA re-insulation program.
    TagsFAA, Noise Mitigation, Sea-Tac Airport, SIRRPP, Sound Insulation, StARTFolderSIRRPP 20250226
  • 2025-02-26

    StART SIRRPP Update — Acoustic Testing Procedures and DNL Metrics — Slide 12 (February 26, 2025)

    This slide from a Seattle-Tacoma International Airport (SEA) noise remedy presentation summarizes acoustic testing procedures, stating that testing followed the FAA-approved 2017 Acoustic Testing Plan (ATP). Key metrics cited include a 70dB DNL exterior noise contour threshold within the 2014 SEA Noise Remedy Boundary and a 27dB Noise Level Reduction (NLR) example calculated from interior and façade measurements.
    TagsFAA, Noise Remedy Program, Sea-Tac Airport, SIRRPP, Sound Insulation, StARTFolderSIRRPP 20250226
  • 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
  • Exclusive: US FAA to slow arrivals at Reagan National Airport to reduce risks after crash

    Summary FAA reduces Reagan National arrivals to 26 per hour for safety NTSB and FAA brief Senate on crash investigation Transportation Secretary Duffy reconsiders air traffic control staffing rules The FAA told airlines late Wednesday that the reduction from a maximum rate of 28 to 26 arrivals per hour would reduce risk but also increase
    CategoriesFrom The Web TagsAir Traffic Control, FAA, Reagan National Airport, Thompson-Reuters
  • 2025-01-14

    Aviation Impacted Communities Act: Fact Sheet

    The Aviation Impacted Communities Act, introduced by Rep. Adam Smith (WA-09), aims to give residents and local leaders a stronger voice in addressing excessive airplane noise and environmental impacts by requiring the FAA to engage directly with affected communities through newly established community boards. The bill would create an 'aviation impacted communities' designation, allow communities to petition for comprehensive impact studies, and expand funding for noise mitigation beyond current sound-level boundaries. It also establishes a sustainable revenue stream for ongoing relief efforts through the Airport and Airways Trust Fund.
    TagsAdam Smith, Airport Impacted Communities Act, FAA, Highline Forum, Legislation, Noise MitigationFolderHighline Forum 2025
  • 240626 Port FD PFAS 021
    2025-01-13

    Removing PFAS — Trading Forever Chemicals for a Safer Firefighting Foam

    Drawhorn, Omie January 13, 2025 Each day Port of Seattle firefighters work to keep people and property safe. Because the Port of Seattle Fire Department (POSFD) is located at Seattle-Tacoma International Airport (SEA), they protect aircraft, travelers, staff, and airport facilities. Now, in the midst of regular firefighting activities, POSFD is taking the lead on
    CategoriesFrom The Web TagsEnvironment, FAA, Health, Port Of Seattle, Press Release

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Upcoming Events

  • Part 150 NCP Workshop — Burien
    Add to CalendarMSaturday Oct 17: 10:00am

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — SeaTac
    Add to CalendarMMonday Oct 19: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — Des Moines
    Add to CalendarMTuesday Oct 20: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]

[See all...]


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.
read more...

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.
continue...

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