Judgment of the Court (Third Chamber) of 12 February 2026.#Republik Österreich v Austrian Airlines AG.#Request for a preliminary ruling from the Oberster Gerichtshof.#Reference for a preliminary ruling – Air transport – Regulation (EC) No 549/2004 – Single European sky – Regulation (EC) No 550/2004 – Provision of air navigation services in the single European sky – Article 8 – Air traffic service providers – Articles 14 and 15 – Charges payable by airspace users – Failure of an aeronautical telecommunications server – Cancellation of flights – Alleged culpable negligence on the part of the provider concerned – Airspace users – Protection of those users against the material damage caused by such negligence.#Case C-408/24.