Ex A380. You're not getting the point. Keg is bang on. There are leagl requirements and then there are airmanship considerations.
If I was flying to Dubai and both RW's were operational with excellent weather then I would plan to land to 75mins and push this down to 60mins with payload considerations.
However if a RW at Dubai was not available I would make sure I had enough for an alternate. Now if the weather at Dubai was marginal then I would take even more - ie it changes each day, its not merely take an alternate and second approach every sector.
The taxiway consideration is for an emergency, the question arose from someone not sure what to do if an aircraft blocked the RW with no fuel. It's something I always keep in the back of my mind should the need arise one day. So what I'm saying is you can should you find yourself in such an unlikely situation.
Last edited by astinapilot; 26th May 2013 at 23:47.