Case T-716/17: Judgment of the General Court of 13 May 2020 — Germanwings v Commission (State aid — Aviation sector — Aid granted by Italy in favour of Sardinian airports — Decision declaring the aid partly compatible and partly incompatible with the internal market — Imputability to the State — Beneficiaries — Advantage for co-contracting airlines — Market economy operator principle — Effect on trade between Member States — Adverse effect on competition — Obligation to state reasons — Aid scheme — De minimis aid — Recovery)