77As for the presumption that operating aid by its very nature distorts competition, it must be pointed out, first, that that presumption follows from the Court's case-law. More specifically, in Case C-86/89 Italy v Commission [1990] ECR I-3891, paragraph 18, the Court concluded that the aid in question had to be regarded as operating aid to the undertakings concerned and that, as such, it affected trading conditions to an extent contrary to the common interest.
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