I think what ACMS was getting at was that if this F/O didn't do the flight, it would get cancelled, and he'd then be stuck in SYD and unable to get to HKG for his duty. Am I right ACMS?
My question is, what the hell are people doing commuting on CX ID90 tickets for anyways? Is it the bargain price? (HA HA)or maybe the reliability? I'm sure there are other travel options, like a QF ID90 maybe.
You're more likely to have an airplane to get on, for around the same price, and at least there not going to come back and ask you to fly the damn thing!