57In the light of the foregoing, the answer to the fifth question is that Article 5(3) of Regulation No 261/2004 must be interpreted as meaning that, in order to be released from its obligation to pay compensation to passengers in the event of long delay of flights in arrival, an operating air carrier may rely on an extraordinary circumstance which affected not that delayed flight but a previous flight operated by that carrier using the same aircraft at aircraft turnaround three flights back in the rotation sequence of that aircraft, provided that there is a direct causal link between the occurrence of that circumstance and the long delay of a subsequent flight in arrival, which is for the national court to determine, taking into account, inter alia, the way in which the aircraft at issue is operated by the operating air carrier concerned.