Airbus' continuing fight against Boeing met a new episode on as the WTO annulled a decision against the American aircraft manufacturer about the financial aid paid by the Washington State for the development of the 777X.

Airbus claims $ 100 billion of lost sales because of unlawful aid received by Boeing.

On September 4, 2017, the World Trade Organization invalidated the judgment of last November which found illegal the $ 5.7 billion in tax concessions granted by the US government to Boeing to develop the new version of the Triple Seven. This financial support does not explicitly target trade flows, says the decision, and cannot, therefore, be classified as prohibited aid (the highest level of illegality). The verdict of the related chamber of the WTO is final.

At the time of the first judgment, Airbus considered that the development of 777X will not cost a dollar to Boeing thanks to the taxpayers of the Washington State. The European manufacturer, simply took note of the decision of the WTO's Appeals Chamber. Airbus claims $ 100 billion of lost sales because of unlawful aid received by Boeing.

To summarize the ongoing battle between the two sides of the Atlantic since 2004, the WTO has estimated the amount of illegal aid received by Boeing is $ 26 billion. For Airbus, it is $ 22 billion. None has repaid anything and none is ready to launch a commercial war, which may destroy the crossed interests of the both manufacturers.