TagFAA(797)

This 2013 FAA grant agreement provides up to $3,900,000 in federal funding to the Port of Seattle for noise mitigation at Olympic Elementary School near Seattle-Tacoma International Airport, with the federal government covering 80% of allowable project costs. The agreement, offered September 9, 2013, outlines conditions including the Sponsor's responsibility to complete the project without undue delay, recover any misused federal funds, and comply with federal assurances and anti-trafficking provisions.

In September 2013, the FAA's Seattle Airports District Office issued a grant offer of $3,900,000 to the Port of Seattle for Seattle-Tacoma International Airport under AIP Project Number 3-53-0062-131-2013. The grant required acceptance by the airport sponsor no later than September 13, 2013, with proper execution of the Grant Agreement by authorized officials and the sponsor's attorney. The fully executed agreement was confirmed and transmitted on September 12, 2013.

In September 2013, the FAA's Seattle Airports District Office issued a $3,900,000 grant offer to the Port of Seattle for Seattle-Tacoma International Airport under AIP Project Number 3-53-0062-131-2013. The grant agreement was fully executed by September 12, 2013, meeting the required acceptance deadline of September 13, 2013. All environmental analysis and approval requirements were fulfilled in accordance with FAA Order 5050.4B, the Airport Environmental Handbook.

A 2013 U.S. Government Accountability Office report found that the FAA made limited progress in modernizing the air transportation system through its NextGen initiative, with ongoing challenges reducing expected benefits. The report highlights the FAA's Greener Skies project at Seattle-Tacoma International Airport, initiated by Alaska Airlines, which aimed to shorten flight paths and route aircraft over water to save fuel, but excluded certain eastern flight procedures due to community concerns about aviation noise. The report notes that the full benefits of new flight procedures depend heavily on how often airlines and pilots actually use them.

In March 2013, FAA Administrator Michael Huerta sent letters to key members of Congress reporting on the FAA's strategy to accelerate implementation of NextGen air traffic management capabilities developed through the Greener Skies project. The report was submitted as required by Section 225 of the FAA Modernization and Reform Act of 2012, and draws on recommendations from the RTCA NextGen Mid-Term Implementation Task Force 5 report issued in September 2009. The Greener Skies project aimed to modernize flight procedures in ways that could affect flight paths and noise exposure at airports such as Sea-Tac.

This 2013 report from the National Academies provides updated guidelines for airport sound insulation programs (SIPs), helping airport sponsors manage the process of reducing aircraft noise in homes, schools, hospitals, and other noise-sensitive buildings. It covers key topics such as construction contracting, federal funding requirements, and best practices for working with homeowners and contractors on government-funded renovation projects. The guidelines are intended for use by airport staff, consultants, and FAA offices in developing compliant noise compatibility programs.

In November 2012, the Federal Aviation Administration (FAA) issued a Finding of No Significant Impact (FONSI) and Record of Decision (ROD) approving new satellite-based navigation procedures at Seattle-Tacoma International Airport (Sea-Tac) under the 'Greener Skies over Seattle' initiative. The new procedures, developed with Alaska Airlines, Boeing, and the Port of Seattle, use advanced RNAV/RNP technology to guide arriving aircraft along more precise, optimized descent paths, reducing fuel burn and environmental impact. The FAA determined that these airspace changes would not result in significant environmental harm or any physical airport development.

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.