betpump5,
I only wanted to glean, just how do the pilots calculate the optimum fuel reserve needed before each flight..
and potkettleblack has explained it well
We don't have mpg as such but we have fuel flow per engine/hr and in total plus total fuel on board/used and also fuel pages that we can pull up which shows the total fuel remaining in each tank.
Also, if the engines are replaced due to maintainance etc, does that affect the consumption.
as far as A380 is concerned.. you may soon have Burger King or KFC in arcade for PAX.. who knows.