pool,

Stuck on the same side of the fence as you bud. They can't fire anyone for being too safe, that's all I'm saying, not barking.

Pool,

A switch for the same weight difference, Agreed.

When you swap one ton of payload with one ton of fuel, the only difference in burn will be due to a different CG and that will be negligible.

However, I do not think that EK flight-plans do take the effect of actual CG change upon burn into account.

Maybe they should, since it is an operational factor that is known and therefore must be covered by the trip fuel and not by the contingency fuel.

I guess from experience, on a very long flight, it could be a couple of tons.

Does anyone else notice a thread-drift here!! Still, makes a change from all the moaning :rolleyes:

Right all the dross has been removed, please keep on topic, or start a thread in the "Tech log" area of PPrune, they'll love you there :E:E

EGGW