A320 Earlier activate approach phase
According to the FCOM3, approach phase should be activated either by automatically over Decel way point or manually around 15 NM from touchdown.
What if the Approach phase is earlier activated, may be > 100 Nm from touchdown? Few of my colleagues ignore the SOP and I want some reason to explain them but I can't find in the FCOM.
As I notice, it will cause some inaccurate predictions on FMGS?
1. Level off sign?
2. Vls , I heard that FMGS calculate Vapp from Actual GW instead of predicted landing weight, isn't it?
anybody has anything else?