hey thanks for the response
but whats confusing me is :
it says in the maintanence manual if you turn alt knob when pushed climb mode or descent mode engage and it will follow the selected altitude while taking into account the altitude constraints untill it synchronizes with the actual altitude then the aircraft levels off while
if you turn it when pulled the same happens except that it disregards the altitude constraints
so basically climb mode and descend mode are selected because u turn the knob while pushed and it follows the selected altitude and the only difference between it and the open climb or open descend is that the latter one ignores the altitude constraints
its really confusing
arent u supposed to have dashes displayed on the FCU if its managed ?