Reported / Citable
Background
Residents beneath flight paths at Seattle-Tacoma International Airport sued the Port of Seattle, Alaska Airlines, and Delta Air Lines. They sought cleanup and compensation for particulate pollution allegedly deposited by aircraft, asserting state tort and constitutional theories.
The defendants argued both that the district court lacked jurisdiction because the suit collaterally attacked federal aviation orders and that the Clean Air Act expressly preempted the claims. The district court rejected dismissal, prompting an interlocutory appeal.
The Court’s Holding
The Ninth Circuit agreed that the district court had jurisdiction. The collateral-attack doctrine applies when claims are inescapably intertwined with review of a specific agency order committed exclusively to a court of appeals. The defendants could not identify an order whose procedures or merits the residents necessarily challenged.
On the merits, however, the claims were expressly preempted. Clean Air Act section 233 prevents states and local governments from imposing aircraft-emissions standards different from federal requirements. The complaint targeted particulate matter in ambient air—the core subject of emissions regulation. State-law mechanisms may potentially enforce standards identical to federal rules, but these plaintiffs deliberately did not allege any federal-standard violation. That omission was fatal, so the court reversed and remanded.
Key Takeaways
- Aviation-related litigation is not automatically an impermissible collateral attack on federal agency action.
- The defendant must identify a specific agency order necessarily implicated by the claims.
- State tort duties regulating aircraft pollutants are expressly preempted if they differ from federal emissions standards.
- A parallel state claim must at least allege violation of the applicable federal standard.
Why It Matters
Although the dispute arose in Washington, the published federal rule directly affects California airport communities, airlines, and public entities. Environmental plaintiffs must plead around preemption with an identified federal standard and supporting violation facts; generalized state duties to reduce aircraft pollution will not survive.