On Sunday 28 April 2019, CA173 (the scheduled 0110 hours from PEK down to SYD with A333 B-8383 was in the sky at 0826, seven hours or so tardy. This must have meant an uncomfortable night for travellers in all classes if the problem was not known until 0100 in the morning. SYD arrival tonight looks to be 2107 hours, 377 minutes behind the timetable. Fortunately CA173 has a very long layover to form CA174, the 1940 hours early evening from SYD back to PEK, so it should be able to be off blocks at 2220 or so if all goes well.