The FAA sent a letter to Washington State's Aviation Director in October 2025 reviewing how the state collects and spends aviation fuel taxes, noting that despite having an approved compliance plan, the state has still not provided actual tax collection figures after 11 years. The FAA flagged concerns about three types of taxes — aircraft fuel tax, sales and use taxes, and environmental taxes (HST and PPT) — questioning whether the environmental tax revenues are being properly directed toward aviation purposes. The agency also reviewed over $97 million in state appropriations claimed as offsets, finding more than $82 million ineligible and nearly $15 million requiring further justification before a final compliance determination can be made.Open full document
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FAA letter to Washington State Department of Transportation requesting clarification on aviation fuel tax collections and compliance with federal revenue requirements. The FAA reviews three types of taxes and identifies issues with tracking, reporting, and use of tax proceeds for aviation purposes.