TagRegional Aviation Baseline Study(6)

In this October 2020 letter, the City of Des Moines formally objected to the Puget Sound Regional Council's Regional Aviation Baseline Study, arguing that it wrongly assumes full implementation of SeaTac Airport's long-term expansion plan (the SAMP) before any required environmental review has been completed. The City warned that this flawed assumption skews all study scenarios, understates community noise and pollution impacts on neighborhoods near SeaTac, and creates a circular logic problem that undermines sound regional planning. Des Moines requested that the baseline be revised to reflect only already-approved and environmentally reviewed projects, and called for planning toward a second international airport to relieve pressure on SeaTac.

The Regional Aviation Baseline Study, produced by the Puget Sound Regional Council, examines the current state and future challenges of aviation in the Puget Sound region, covering scenario development, airport analysis, and public engagement. The study highlights near-term disruptions to air travel, noting that passenger volume at Seattle-Tacoma International Airport dropped to just 27% of normal levels during the COVID-19 pandemic, with daily travelers falling to 17,200 and aircraft operations declining from 1,160 to 840 takeoffs and landings per day. The findings provide a foundation for regional planning decisions related to airport capacity, operations, and policy.

The Puget Sound Regional Council launched a two-year Regional Aviation Baseline Study, funded by a $1.6 million FAA grant, to assess the aviation system across King, Pierce, Snohomish, and Kitsap counties. The study examined existing airport roles, economic contributions, airspace capacity, and community impacts to build a technical foundation for future regional aviation planning decisions. Conducted in phases from 2019 to 2020, the study included stakeholder engagement, public meetings, and a final report outlining strategies for accommodating future aviation demand in the central Puget Sound region.

A November 2018 presentation by the Puget Sound Regional Council examined regional aviation needs against a backdrop of rapid growth in the central Puget Sound area, where the population rose from 3.7 million to 4.1 million people between 2010 and 2018. Over the same period, the region's job count grew from 1.9 million to 2.3 million, reflecting a strong and expanding economy. The study established a baseline for understanding how this growth affects aviation demand and, by extension, noise and capacity pressures at airports such as Sea-Tac.

A November 2018 presentation by the Puget Sound Regional Council examined the growing demand for aviation in the central Puget Sound region, driven by rapid population growth from 3.7 million to 4.1 million people and job growth from 1.9 million to 2.3 million jobs between 2010 and 2018. The Regional Aviation Baseline Study was presented to the Highline Forum to establish a foundation for understanding how the region's booming economy and population are shaping future airport capacity needs. The study provides context for ongoing policy discussions around Sea-Tac Airport and regional aviation planning.