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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.

TagPart 150(263)

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  • The PFC Explainer

    Every time you fly out of Sea-Tac, $4.50 of your ticket price goes directly to the airport. That charge, called a Passenger Facility Charge (PFC), is a multi-billion dollar fund, and one of the biggest single revenue sources for airport expansion. In the past it was used for noise-mitigation programs. Today? Not so much.
    CategoriesExplainers TagsFAA, Part 150, PFC
  • FAA Part 150 Airport Noise Compatibility Planning — eCFR Title 14 Overview

    Screenshot of the Electronic Code of Federal Regulations (eCFR) showing Title 14 (Aeronautics and Space), Chapter I (Federal Aviation Administration), Subchapter I (Airports), Part 150 (Airport Noise Compatibility Planning), sections 150.1–150.35, including Subparts A, B, and C, plus Appendices A and B covering Noise Exposure Maps and Noise Compatibility Programs.
    TagsAirport Noise Law, Code of Federal Regulations, FAA, Federal Aviation Administration, Part 150
  • 2025-10-01

    NEM_Wkshp_Boards_8

    A presentation introducing the Part 150 Study process for Seattle-Tacoma International Airport. The document explains the federal regulatory framework for preparing Noise Exposure Maps and Noise Compatibility Programs, outlines the phases of the study process, and provides historical context of previous Part 150 studies conducted at SEA from 1985 to 2014.
    Tagscommunity engagement, Noise, Part 150, Port Of Seattle, Sea-Tac Airport
  • Nem wkshp boards 8.5x11 web rfs pdf
    2025-10-01

    Welcome to the public workshop for the seattle-tacoma international airport part 150 study

    A presentation introducing the Part 150 Study process for Seattle-Tacoma International Airport. The document explains the federal regulatory framework for preparing Noise Exposure Maps and Noise Compatibility Programs, outlines the phases of the study process, and provides historical context of previous Part 150 studies conducted at SEA from 1985 to 2014.
    Tagscommunity engagement, Noise, Part 150, Port Of Seattle, Sea-Tac Airport
  • 2025-09-25

    KCIA Public Workshop Part 150, Vision 2045

    Please join us and participate in the Vision 2045 Airport Plan Open House for the King County International Airport-Boeing Field (KCIA). This is the fourth open house for the Vision 2045 Airport Plan and Part 150 Study. Register at the link below to receive reminders and updates about this open house and the Vision 2045 Airport Plan. Registration is optional and not required to attend the open house. When: Thursday, Sept. 25, 2025, 5:30-7:30 p.m. Where: KCIA Flight Service Station, 6526 Ellis Avenue South, Seattle, WA, USA
    CategoriesEvents TagsKCIA, Part 150
  • Part 150 for Dummies

    Read this, including the recent update, and then attend the upcoming Port of Seattle Part 150 workshops.
    CategoriesExplainers, Frequently Asked Questions, News Stories TagsDNL65, FAA, FAA Density Guidelines, Part 150
  • 2025-09-24

    Highline Forum agenda: Part 150 noise study and SKPCF environmental program

    The Highline Forum held its September 24, 2025 meeting at the City of Des Moines Police Training Room, with key agenda topics including an update on the Part 150 Noise Study for Seattle-Tacoma International Airport and the South King & Port Community Fund Environmental Improvement Program. The hybrid meeting, co-chaired by Councilmember Matt Mahoney, also featured presentations on the SEA Airport Aviation Director search and a StART update from Port of Seattle representatives. The forum meets bimonthly throughout 2025, rotating among local host cities including Federal Way, Burien, Des Moines, and SeaTac.
    TagsDes Moines, Highline Forum, Part 150, Port Of Seattle, StART
  • 2025-09-24

    Highline Forum agenda: Part 150 noise study and SKPCF environmental program

    Agenda for the September 24, 2025 Highline Forum meeting hosted by the City of Des Moines, held in hybrid format. Topics include a Part 150 Noise Study update, SEA Airport Aviation Director search, South King & Port Community Fund Environmental Improvement Program, and StART update. The document also lists all 2025 Highline Forum meeting dates
    TagsDes Moines, Highline Forum, Part 150, Port Of Seattle, StART
  • TRC_Part150-1536×864

    TagsPart 150
  • 2025-08-11

    Part 150 Study Technical Review Committee: Meeting #4 Agenda, August 11, 2025

    This document is the agenda and attendance record for the fourth meeting of the Part 150 Study Technical Review Committee, held on August 11, 2025, at Seattle-Tacoma International Airport. The meeting covered updates on Phase 1 Noise Exposure Mapping, a kickoff for Phase 2 Noise Compatibility Program planning, and a review of the project schedule. Representatives from neighboring cities, airlines, King County, the FAA, and the Port of Seattle participated as members or liaisons.
    TagsFAA, Noise Exposure Update, Part 150, Port Of Seattle, Sea-Tac Airport

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Upcoming Events

  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
    Zoom (Virtual Meeting)
    START meetingagenda 2026826 final 0 pdf

    Meeting Objectives Introduce the primary feedback themes identified by StART members regarding StART’s Operating Procedures and determine areas that may warrant future discussion. 5:00 PM – Welcome Meeting Management Welcome Lead: Andrés Mantilla, Facilitator, Uncommon Bridges; Wendy Reiter, Airport Managing Director, POS 5:15 PM – Dinner: All participants eat. 5:30 PM – StART Operating Procedures

    [...]
  • Commercial Aviation Work Group
    Add to CalendarMThursday Sep 3, 10:00am - 1:30pm
    Virtual Meeting (Zoom)
    Cawg agenda sep 3 26 virtual pdf

    Meeting Agenda 10:00 a.m. – 10:15 a.m. | Welcome – Evan Nordby, Chair a. Introductions and Agenda Reviewb. Status of appointments and non-voting member invitationsc. Other updates as necessary 10:15 a.m. – 11:00 a.m. | Is it practical and legal to operate the western Washington [Puget Sound] airports as a single airport system? – Consultant

    [...]

[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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