They landed shortly after 11.30 pm. I'm surprised they were allowed to land so long after the curfew, I mean what's the point in having a curfew if aircraft can bust it willy nilly any time they like just because an engine was underperforming? I can see this will open a can of worms, with airlines scheduling engine failures when approaching Sydney out of hours. Turn them back, like the boats I say. (you there Alan, c'mon, back me up here)