i think that i maybe didn't express clearly my concern. Nighrider, i agree with you concerning the evolution of the protection by the yellow hollow bars. And that's my initial point: you have a MACTOW on the loadsheet. Let's say around 22%. That's not the value that should be inserted on the PERF INIT page. After TO cleaning up the aircraft will advance the CG (negative moment of the movement of the gear and TEF, much lesser positive moment of the LED). So what value, besides the FMC default value, should i insert? eckard would you happen to have any value of those fuel index? for 734? Because what you wrote is axactly my concern: where do i get this CRZ CG.