Ok thank you guys! Interesting topic. I get it now but Sergei I don’t undestand about the assumption of 25%CG you mentioned earlier. From what I saw during flight preparation if you change the ZFWCG value it will affect the VAPP on the Perf page based on the estimated landing CG. Then from what Check Airman said, when you pass 14500 feet or when you activate approach phase the actual CG. Isn’t it?