Originally Posted by 8420PR

I think you might have misunderstood - if extraordinary circumstances impacted the preceding flights of the same aircraft then the delay can be considered extraordinary.

Here is the case you are referring to: https://curia.europa.eu/juris/docume...t=1&cid=863363
In this case the passenger was denied boarding from a flight that operated in order to accommodate passengers that had been long delayed as their flight had been cancelled because of a strike the day before. The judge ruled this was an IDB.

More relevant is this case: https://curia.europa.eu/juris/docume...t=1&cid=850077



The judge ruled that extraordinary circumstances affecting a flight three rotations back did make the reason for the delayed flight extraordinary.