Anyone got a copy of the TAF that would have been available to the crew prior to departure? Would be interesting to see by just how much the tailwind was unexpected and whether it would be reasonable to expect a wind shift of, say, 90 to 180 degrees.
For this trip contingency would have been approx. 4,500kgs.
Not sure if things have changed recently but, unless it was a dire emergency a diversion to Canberra was a big No No for the SQ744 and certainly not available as an alternate for fuel planning purposes. Usual alternate was MEL but I could be out of date by now.