Judgment of the Court (Eighth Chamber) of 13 June 2024.#Matkustaja A v Finnair Oyj.#Reference for a preliminary ruling – Air transport – Regulation (EC) No 261/2004 – Article 5(3) – Compensation for passengers in the event of long delay or cancellation of flights – Exemption from the obligation to pay compensation – Extraordinary circumstances – Technical failures caused by a hidden design defect revealed by the manufacturer after cancellation of the flight – System for measuring the quantity of fuel in the aircraft.#Case C-385/23.