Thanks for the replies.
If we take 1.9 tons of extra in this case so basically we are limited to our 'planned' zfw which means we can not take any more extra load? 13.5+61.0+1.9= 76.4 (minus burn off gives us 66.4). We are absolutely limited by planned zfw. No additional LMC. Whereas if we took 1.7 tons extra that is (max zfw minus req) we could get 0.2 extra load? I am with the consideration of max ldg wt to be the limiting factor GIVEN we will not exceed planned zfw. My calculations,
(LDG wt + b/o) - planned zfw - req fuel = max fuel that can be uplifted
My another question is then why are we calculating Max ZFW plus Req fuel