Mutt, I'm happy to see that I have a fellow traveller in applying this conservative approach...:ok:

The said flight was indeed one of the early B747s, loaded to the gunnals for a Haj flight direct to home.

Payload penaltys of the order of 3,000 Kg are indeed significant, but I sleep better at night knowing that I've delivered my end users (the pilots) with information which errs on the side of safety, presumably you do too:ok:

Now that most of our B777 ops are based upon performance calculations derived from the EFB OPT, Heaven only knows what "precautionary" measures the programmers have incorporated......probably none!:eek:

BTW, welcome to the world of unbalanced field operations, happens to the best of us.:D

Regards,

Old Smokey

ha ha, not I, totally balanced operations these days :):)

Mutt