The commentary is a critical discussion of the position presented by the Kraków Regional Court in the ruling of 6 February 2023 (II Ca 2302/22). In this ruling the Court dealt primarily with the issue of compensation for delayed or cancelled flight due to an engine failure caused by a structural defect. The court incorrectly found that such an engine failure was unpredictable, even though the defendant knew about the existence of the engine failure caused by a structural defect many months before its occurrence, and in fact the only unknown was the moment when such a failure would become apparent. The Court's position was also criticized that the defendant's re-routing for a later flight (almost 24 hours later than the previously booked one) cannot be treated as denied boarding.