Okay so I was thinking why the add the 77L🤔 Because there is almost No different beween then 77W and 77L, but one thing is the range. So who cares about the range we can fly so long as we want there is no fuel usage. So I think for Global flight they want to add the 77L for the ranges this Will mean there possible comes fuel usage.
Do you understand?😂😂
Just think about it