TagFAA(514)

FAA Order JO 7110.126A, effective September 28, 2019, updates the rules air traffic controllers use to maintain safe distances between aircraft based on wake turbulence — the invisible air disturbances generated by planes in flight. The order introduces a nine-category system that groups aircraft by size and wake behavior, replacing older weight-only classifications, and reduces required separation distances in cases where science has shown greater spacing is unnecessary, such as when one heavy aircraft follows another of lower wake intensity. Facilities like Sea-Tac must obtain FAA authorization, train all personnel, and update their systems before applying these revised standards.

FAA Order 5090.5, effective September 3, 2019, establishes guidelines for managing the National Plan of Integrated Airport Systems (NPIAS) and the Airports Capital Improvement Plan (ACIP), which together identify airports important to national air transportation and prioritize federal funding for airport development projects. The order serves as a financial planning tool for systematically assigning Airport Improvement Program (AIP) funds to qualifying airports across the country. Note that this document addresses broad national airport capital planning policy and does not contain specific provisions related to Sea-Tac Airport noise mitigation or local noise policy.

This EPA report, prepared by David Mudarri PhD in 2018, reviews the state of science on indoor environmental quality and outlines research, policy, and program options for improving it. The synthesis paper was developed to help the EPA establish research goals, objectives, and priorities across a wide range of indoor environmental topics and time frames. It is intended solely for internal EPA use due to the inclusion of copyrighted material from broad-based review articles.

A 2019 U.S. Department of Transportation Inspector General report found that the FAA's Metroplex program—designed to modernize flight routes using satellite-based navigation in busy metropolitan areas—fell significantly short of its promised benefits, delivering only $31.1 million in annual savings compared to the $61.6 million minimum originally projected. The program also faced delays of up to four years, driven largely by community concerns about aircraft noise, which is directly relevant to ongoing noise issues around airports like Sea-Tac. Key obstacles such as unclear pilot-controller terminology and a slow procedure amendment process remained unresolved at the time of the report.