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Jack57
19th Dec 2005, 01:32
Can anyone tell me why some B747-400F's have a sliding ZFW/TOW scale......i.e. smaller ZFW's mean larger TOW's and visa versa?????

Intruder
19th Dec 2005, 01:38
Yes.

Otherwise, too much weight in the fuselage, and not enough in the wings. The wing bending moment is then excessive.

CR2
19th Dec 2005, 10:05
Are you refering to Extended ZFW (Variable ZFW to our US colleagues)?

744rules
19th Dec 2005, 15:34
standard mzfw is around 276000kg

above that, you have to check the mtow as it is decreasing due to wingbending. When using increased zfw , forward max cumulative weights will decrease as well.

Max increased zfw is around 288000kg