TagFAA(793)

The FAA extends its April 20, 2026, order limiting scheduled aircraft operations at Chicago O’Hare International Airport (ORD) through October 30, 2027. The extension is necessitated by ongoing construction projects and airfield adjustments expected to continue through Summer 2027, which continue to limit airport capacity. The order was issued by FAA Administrator Bryan Bedford and

The City of Des Moines, WA provided its City Council with an update on the Sustainable Airport Master Plan (SAMP) for Seattle-Tacoma International Airport, following the FAA's September 2025 approval of 31 near-term expansion projects — including 19 new gates, a second terminal, and cargo facilities. The Port of Seattle launched a state-level environmental review (SEPA) in May 2026, releasing a Draft Environmental Impact Statement with a 60-day public comment period. Des Moines is collaborating with the cities of Burien and SeaTac through an Interlocal Agreement to submit coordinated comments, with the final report expected in 2027.

This Memorandum of Understanding establishes a cost-sharing agreement between Prince George's County (Maryland), Fairfax County (Virginia), and the City of Alexandria (Virginia) to jointly hire a contractor to study and propose ways to reduce aircraft noise impacts near Ronald Reagan Washington National Airport. Each of the three parties agrees to contribute up to $83,333 toward a total project budget of $250,000, with Alexandria taking the lead on contractor procurement and contract management. The agreement runs for two years with the option to renew for up to two additional one-year terms.

A Des Moines resident's formal comment argues that the Seattle-Area Metroplex Environmental Impact Statement's noise analysis is legally inadequate because it relies solely on a federal FAA noise threshold rather than Washington State's own multi-factor significance standard. The comment contends that the standard noise metric used (DNL) masks the real impact of roughly 96 additional daily flights projected by 2037, since it averages out individual disturbance events rather than counting them. The commenter calls for supplemental analysis using alternative metrics—such as single-event sound levels and nighttime averages—supported by peer-reviewed health studies linking aircraft noise to sleep disruption and cardiovascular harm.

This technical appendix, prepared by Jeffery Bogen of DAAC in May 2026, analyzes runway and airspace capacity at Seattle-Tacoma International Airport (SEA) to support the Port of Seattle's Sustainable Airport Master Plan (SAMP) environmental review process. It compares FAA 2016 baseline hourly flow rates against observed 2024–2026 performance data, documents current capacity improvements, and projects annual flight operations through 2037 under both constrained and unconstrained growth scenarios. The document is intended as supporting reference material for public comments on seating capacity impacts under SEPA/EIS review.