A20N LDG CG trim.
Hello pilots! Recently I've found smth interesting. Maybe I'm missing something obvious, so help me find the answer. During des prep I checked that LDG CG was around 31%, according loadsheet it was the same. But during final and until landing actual pos of pitch trim was around 20-25%. The same situation occured during next flights. Can someone explain this?(with reference please)As I know FMGS always use 25%CG to calculate your Vapp, and thats why we add our actual LDG CG in EFB ldg performance app to correct our Vapp.(+-1/2kt difference). Why do we do that if actual ldg cg differs from calculated))thanx.