Judgment of the Court (Third Chamber) of 16 October 2025.#AirHelp Germany GmbH v Austrian Airlines AG.#Request for a preliminary ruling from the Landesgericht Korneuburg.#Reference for a preliminary ruling – Air transport – Regulation (EC) No 261/2004 – Compensation for air passengers in the event of long flight delays – Conditions – Article 5(3) – Concept of ‘extraordinary circumstances’ – Concept of ‘reasonable measures’ to avoid an extraordinary circumstance or the consequences thereof – Aircraft struck by lightning during the preceding flight and consequently subject to a mandatory inspection.#Case C-399/24.