Interesting that the report invoked climate change as a reason for changing weather patterns in south east Asia. Utter, utter rubbish. I flew in this region for many years both long and short haul. It was a fact that these generally seasonal thunderstorms could occur with frequency even with a 30pc highly unlikely chance therefore theoretically improbable chance. Yet often the ‘unlikely’ thunderstorm had become a tropical deluge with below cat 1 visibility and consequently flooded runways. It is beyond ridiculous to almost by rote quote climate change as a factor when a sound understanding of local and historical climatology would demonstrate otherwise. As a previous correspondent stated take a lot of extra fuel which is not always possible on ultra long haul but at the very least have a plan. The lack of disciplined and structured DM is disappointing but frankly not surprising.