TagANES(11)

Presentation slides from the Maryland Aviation Administration (MAA) and BWI Marshall Airport Roundtable Technical Subcommittee covering aviation noise outcomes and next steps. Topics include expanded DNL contours below 65DNL, separation of East and West Flow contours, NextGen implementation impacts, FAA Instrument Flight Procedure (IFP) Gateway filing, and an upcoming 14 CFR Part 150 Study beginning

Presentation from the Aviation Noise and Emissions Symposium (ANES) featuring Bruce Rineer of BWI Airport Office of Environmental Compliance and Sustainability and Drew Roth of the BWI Roundtable. Session chaired by Bert Ganoung, Cindy Gibbs, and Gregory Maxwell. Covers collaborative procedure design at Baltimore-Washington International Airport (BWI), independent noise modeling results confirming MAA predictions, analysis

Aviation Noise and Emissions Symposium (ANES) Aviation Working Group (AWG) presentation on seven specific community requests to airlines to mitigate departure noise at John Wayne Airport (SNA/Orange County). Covers NADP-1 steep departure procedures (1.2 dB reduction), STAYY4 two-turn procedure approved by FAA, 1200-foot throttle cutback, further power reduction at 1200 feet altitude initiated April 2024

Presentation from the 2026 Aviation Noise and Emissions Symposium (ANES) in Las Vegas, NV covering community expectations and implications for FAA flight procedure changes. Topics include FAA priorities of safety and efficiency over noise, NEPA environmental review levels (CATEX, EA, EIS) and community engagement requirements, extraordinary circumstances triggers, incremental nature of procedural changes, multi-year timelines

The Eliminate Aviation Gasoline Lead Emissions Initiative (EAGLE) is a coalition of government and industry partners, including the FAA and major aviation associations, working to eliminate lead emissions from aviation gasoline by the end of 2030 without compromising the safety or efficiency of general aviation. The initiative operates through four key pillars: supply chain infrastructure and deployment, research and innovation, unleaded fuel evaluation and authorization, and regulation and policy activities. A presentation on the initiative was delivered at the Aviation Noise & Emissions Symposium at U.C. Davis on May 2, 2023.

Airbus's 'fello'fly' program explores formation flying as a fuel-saving technique, where a follower aircraft positions itself in the smooth updraft of a leading aircraft's wake to recover otherwise wasted kinetic energy. This approach can reduce trip fuel consumption and emissions by around 5% for the follower aircraft, making it most beneficial on long-haul routes exceeding 2,000 nautical miles. Key factors affecting savings include aircraft pairing, the follower's position on the vortex, time spent in formation, and fuel used to enter the formation.

A 2023 Tufts University study examined how living near major airports like LAX exposes millions of Americans to harmful levels of noise and air pollution. Research links this proximity to higher rates of hypertension, cardiovascular disease, poor learning outcomes in children, and emerging evidence of pre-term birth and brain cancer. With over 33 million people living within 10 miles of the 23 busiest U.S. airports, the findings carry significant public health implications for communities near facilities like Sea-Tac.

A February 2021 presentation by Airlines for America outlines how COVID-19 devastated the airline industry, with worldwide passenger traffic dropping 66% and U.S. carrier revenues falling 61.5% year-over-year. Despite these financial losses, airlines remained committed to environmental progress, including accelerating the retirement of older, less fuel-efficient aircraft in favor of newer, cleaner models. The presentation also highlights the role of Sustainable Aviation Fuel (SAF) and aviation's broader responsibility in achieving a sustainable future.

This 2021 presentation by aviation consultant Jim Allerdice examines 'dispersion' — the practice of intentionally varying flight paths so that aircraft noise is spread across a wider area rather than repeatedly concentrated over the same neighborhoods. It explores the tension between the FAA's preference for Performance-Based Navigation (PBN/RNAV), which promotes precise, repeatable flight paths for safety and efficiency, and the concerns of communities living under those concentrated flight corridors. The material is relevant to ongoing debates about how airports like Sea-Tac can balance operational efficiency with equitable distribution of aircraft noise impacts.