As posted in the Qantas Delays/Cancellations thread elsewhere on AFF, A388 VH-OQJ had been in SYD since 0600 hours yesterday and appeared to be rostered as QF11 late yesterday afternoon, the 1735 hours SYD-LAX. Initially it was put back to a proposed 2100 hours departure last night, then 2200, and subsequently 2100 this evening (Tuesday 1 October, i.e. 1645 minutes behind schedule).
Was additional maintenance required?
With an A388 now meant to operate as QF63 SYD-JNB five days a week, the JNB flight might well be the last A388 one QFi would cancel if it had a choice, because rebooking passengers on other carriers would be more challenging, as QFi is the only nonstop on this route.