Yikes! I thought that would have not been to acceptable ALAEA standards and would not have been permited. Oh, that philosophy only applies to Qantas. Silly me!
Are you saying your engineers must be on Aussie soil to swing a spanner, Ken? Nahh, didn't think so...
We used to have the "slack" in our schedule on the ground in Sydney, but I believe that due to the desire to have morning arrivals into LAX (possibly along with the high parking charges in Sydney), that was changed a couple of years ago.