LOT Polish Airlines became the first airline ever to take Boeing to trial over the 737 MAX program when opening arguments began in a Chicago federal court on Monday, May 11, 2026. The Warsaw-based flag carrier alleges that Boeing deliberately concealed safety defects in the MAX's Maneuvering Characteristics Augmentation System (MCAS) while pitching the aircraft to LOT in 2016, and that the airline would never have committed to its 15-jet lease order had the full risk been disclosed.
The case opens a courtroom battle that aviation lawyers and industry analysts have been watching since 2021, when LOT first filed suit. It is the first airline-versus-Boeing MAX trial to actually reach a jury β every previous airline dispute over the MAX, including those filed by Norwegian Air Shuttle and Russia's Utair, was resolved through confidential settlement before opening statements. A finding for LOT could open the door for dozens of additional carriers globally that took deliveries between 2017 and the March 2019 grounding to file similar claims.
According to LOT's complaint, Boeing engineers were grappling internally with the 737 MAX's tendency to pitch its nose up under certain high-angle-of-attack conditions during the same months that Boeing's sales team was actively pitching the aircraft to the carrier as a simple A320neo competitor requiring no additional pilot training. LOT argues that Boeing then misled the Federal Aviation Administration about MCAS's authority, sensor architecture, and the difficulties pilots faced when the system activated unexpectedly β specifically to avoid a Level D simulator training requirement that would have undercut the MAX's sales pitch versus the Airbus A320neo. Two fatal crashes β Lion Air 610 in October 2018 and Ethiopian Airlines 302 in March 2019 β killed 346 people and led to a 20-month worldwide grounding of the type.
LOT, which had pinned its post-2015 fleet renewal and European-Asia expansion plan on the MAX, says the grounding cost it hundreds of millions of dollars in lost revenue, lease payments on jets it could not fly, and pilot retraining when the aircraft returned to service. The carrier is seeking compensatory and punitive damages; specific dollar amounts were not disclosed in opening statements.
Boeing's attorneys are pushing back hard. In opening arguments, Boeing's lead counsel pointed out that LOT continues to operate 26 Boeing 737 MAX aircraft today and has ordered additional jets β arguing that the airline is "crying foul and fraud out of one side of their mouth in the courtroom" while flying the same type every day on the other. Boeing also notes it already paid more than $2.5 billion under a 2021 deferred prosecution agreement with the US Department of Justice covering criminal 737 MAX fraud conspiracy charges, and argues that any commercial claims by individual airlines should have been resolved through the existing compensation framework.
The trial is expected to run for several weeks, with FAA officials, former Boeing engineers, and current LOT executives on the witness list. A jury verdict in LOT's favor would not only obligate Boeing to potentially billions in additional damages but would also create the first courtroom-validated factual record that the manufacturer hid MCAS safety problems to win commercial orders β a precedent that could reshape global aviation product-liability law for the next decade.
Compiled from publicly available aviation news sources. Featured image: AI-generated by AviationShop. This article is original editorial content; facts have been verified across multiple public sources.
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