Opinion of Advocate General Medina delivered on 9 February 2023.#TAP Portugal v flightright GmbH and Myflyright GmbH.#Requests for a preliminary ruling from the Landgericht Stuttgart.#References for a preliminary ruling – Air transport – Regulation (EC) No 261/2004 – Compensation to air passengers in the event of cancellation of flights – Article 5(3) – Exemption from the obligation to pay compensation – Concept of ‘extraordinary circumstances’ – Unexpected absence, due to illness or death, of a crew member whose presence is essential to the operation of the flight.#Joined Cases C-156/22 to C-158/22.