Thus I am not sure where your response above comes from.
- only a 'few' years using dropline trim sheets (D-LTS) and on those for 737NG, 5T in the centre tank represents about 2%MAC nose down (6 'trim units' on my last company charts)
There is no chart that displays what happens when fuel remains in the centre tank while main tank fuel is burnt
- most D-LTS will show that. Incidentally, CofG moves FORWARD as main tank fuel is burnt on the 737, or it did on the ones I flew!
I have never seen a chart like the one you posted, sj, and I would be VERY wary of using it since the MAC change from empty tanks to full tanks (19%MAC) is prettty well outside the scope of the 737NG envelope at some weights (700, anyway). That has an absolute max range of 20%MAC so not a lot of margin for error.