[Sunroof]

Makes perfectly good sense, but what is the history of the Boeing 777 in similar conditions (outdoor heat, weight, tire condition, etc) that resulted in a fire that incapacitated this aircraft? Never, I believe. The 777 has flown tens of thousands of flights under every imaginable condition. Would'nt the crew have enough time to declare an emergency? Certainly, both pilot and co-pilot instinct would be to get to the fire, but also alert those of the planes condition. Playing devils advocate here, it took time for the cockpit to fill with smoke if this burning tire scenario were correct. But, its also palusible that the crew while changing course had enough time alert the ground.