TagSea-Tac Airport(2026)

This is the Port of Seattle's Comprehensive Annual Financial Report for the fiscal year ended December 31, 2012, covering the financial activities of the port authority that operates Seattle-Tacoma International Airport and Seattle's seaport facilities. The report was prepared by the Port's Accounting and Financial Reporting Department and provides a detailed accounting of the organization's revenues, expenditures, and overall financial position. While primarily a financial document, it reflects the broader operations of the Port of Seattle, which administers infrastructure and policies—including noise mitigation programs—affecting the Sea-Tac Airport region.

This document explains the noise metrics used to evaluate aircraft noise around Seattle-Tacoma International Airport, including decibels (dB), A-weighted decibels (dBA), and the Day-Night Average Sound Level (DNL). It describes how sound is measured on a logarithmic scale, meaning noise levels don't add up the way ordinary numbers do, and explains why A-weighted measurements are the standard used by the FAA and EPA because they best match how human ears perceive sound. These concepts form the technical foundation for assessing the environmental impact of proposed flight arrival procedures at Sea-Tac.

This document is Appendix D of the Final Environmental Assessment for proposed new arrival flight procedures at Seattle-Tacoma International Airport, dated November 1, 2012. It contains TARGETS files—technical routing data packages used to define new RNAV (area navigation) flight paths, such as the HAWKZ RNAV Version 4.2 procedure, which charts a series of waypoints guiding arriving aircraft toward Sea-Tac from the south. The files were prepared in coordination with Seattle ARTCC and are intended to support evaluation of how the new routes may affect noise levels in surrounding communities.

This appendix from a 2012 Environmental Assessment documents the published arrival flight procedures at Seattle-Tacoma International Airport that would be affected by proposed changes to how aircraft approach the airport. It includes detailed charts for routes such as the JAWBN Three Arrival and Olympia Seven Arrival, showing waypoints, altitudes, and speed restrictions for aircraft arriving from various directions including Canada and southern Washington. These procedures define the flight paths aircraft must follow when descending into Sea-Tac, directly influencing the noise experienced by communities surrounding the airport.

This document outlines the proposed schedule for Sea-Tac Airport's Part 150 Noise Compatibility Study, running from May 2012 through March 2013. Key milestones include submitting a preliminary draft to the FAA in October 2012, a public comment period and hearing in January 2013, and final submission to the FAA by March 15, 2013. The schedule also details four Port Commission briefings at which officials would be updated on noise exposure maps, FAA feedback, and the formal adoption of the final Part 150 document.

This September 2012 Port of Seattle presentation outlines the Airport Sustainability Master Plan for Seattle-Tacoma International Airport, comparing existing and future airport layout conditions. The plan maps proposed near-term development projects across the airfield, terminal areas, parking facilities, and surrounding grounds. It serves as a long-range planning framework intended to guide responsible airport growth while reflecting the Port of Seattle's sustainability commitments.

This document outlines flight procedures for Seattle-Tacoma International Airport (Sea-Tac) designed to reduce noise impacts on surrounding communities, covering both North Flow and South Flow operations. Key rules include restrictions on eastbound turns during nighttime hours (10 p.m.–6 a.m.), minimum altitude and distance requirements before turning, and designated corridors for arrivals and departures over Puget Sound and Elliott Bay. Compliance data from March 2012 shows that 89 out of 2,431 daytime South Flow eastbound arrivals turned south of the 520 Bridge early, violating the preferred procedure, with Alaska Airlines (ASA) and Southwest Airlines (SWA) accounting for the largest shares of non-compliant flights.