Here's one for thought. how would you like to be flying over the South Pole in the middle of the night and have this happen.
Well this same aircraft (VH-OJM) was the very same aircraft that did the new years eve antarctic charter only 8 days prior to this latest QF2 Bangkok incident!!!
Low visual awareness, standby compass with low accuracy (because of location) and 4 -5 hours flight to nearest airport.
Now that would really be testing the capability of the aircraft and it's crew.