The Ninth Circuit Court of Appeals recently ruled on a significant case involving pollution claims against Alaska Airlines, Delta Airlines, and the Port of Seattle. The court's decision, filed on September 23, 2026, reversed a lower court's ruling that had allowed residents living near the Seattle-Tacoma Airport to pursue their claims. This ruling affects the residents of the area, known as the "Contamination Zone," who allege that emissions from aircraft are harming their health and property.
The case, Codoni v. Port of Seattle, arose when five residents—Cindy Codoni, Michelle Geer, Horace Cathcart, Amy France, and Tamara Chakos—filed a lawsuit against the airlines and the Port, claiming that the pollution from overhead flights was causing significant health issues and property damage. The plaintiffs argued that the airlines were negligent and that the Port allowed this pollution to continue without taking necessary action to mitigate it.
The residents' complaint included several claims, including negligence, battery, public nuisance, and inverse condemnation. They pointed to studies showing that communities under the flight paths experienced higher levels of air pollution and related health problems, such as respiratory issues and lower life expectancy. The plaintiffs sought damages and a court order requiring the airlines and the Port to clean up the pollution.
The case began in King County Superior Court but was removed to federal court by the defendants. The district court initially denied the airlines' motion to dismiss the case, leading to an appeal by the defendants. The Ninth Circuit was tasked with reviewing the lower court's decision regarding jurisdiction and the applicability of federal law.
In its ruling, the Ninth Circuit addressed two main issues. First, the court held that the district court had proper jurisdiction over the residents' claims. The airlines had argued that the lawsuit was an improper collateral attack on federal agency actions, specifically those related to aviation and emissions regulations. However, the court found that the plaintiffs' claims did not directly challenge any specific agency orders, making the collateral attack doctrine inapplicable.
Secondly, the court found that the residents' claims were expressly preempted by Section 233 of the Clean Air Act. This section prohibits states from enforcing any standards regarding aircraft emissions unless they are identical to federal standards. The court stated, "Plaintiffs’ state law claims were expressly preempted by Section 233 of the Clean Air Act, 42 U.S.C. § 7573." As a result, the court reversed the district court's decision and dismissed the case.
The ruling has significant implications for residents living near airports across the country. It clarifies that federal law, particularly the Clean Air Act, takes precedence over state law claims related to aircraft emissions. This decision may limit the ability of residents to seek damages or enforce local pollution standards against airlines and airport authorities.
The court's decision also highlights the challenges faced by communities dealing with pollution from aviation. Many residents living near airports have raised concerns about health risks associated with aircraft emissions. However, this ruling indicates that federal preemption may restrict their legal avenues for addressing these issues.
Looking ahead, it is unclear whether the plaintiffs will seek to appeal the Ninth Circuit's decision. The ruling effectively closes the door on their claims in this case, but it may prompt further discussions about the need for stronger regulations or alternative legal strategies for addressing pollution from aircraft.
Details were not available in the court filing regarding any related cases or potential appeals. However, this case sets a precedent that could influence similar lawsuits in the future, particularly those involving environmental concerns and federal preemption.