The US Department of Commerce wrapped up its Section 232 investigation into imported commercial aircraft, jet engines, and associated parts on July 9, concluding the probe without slapping any new tariffs on the aviation sector.
The investigation, launched by Commerce Secretary Howard Lutnick on May 1, 2025, examined whether foreign dependency in the aircraft supply chain posed a national security risk.
What the investigation found, and why it stopped short
The Commerce Department’s findings painted a picture of an industry deeply entangled with foreign suppliers. Quality control issues, counterfeiting risks, and potential impacts on US jobs and wages all made the report’s concern list.
But the department ultimately decided that the cure would be worse than the disease. Imposing tariffs on aircraft imports would have collided head-on with the 1979 Civil Aircraft Agreement, a decades-old international framework that keeps aviation trade duty-free across signatory nations.
