Originally Posted by
dream747
The “latched” function refers to the Descent Profile Optimisation (DPO). Not all aircraft have it (refer to FCOM), the NEOs should come with it but it is available for retrofit on the CEOs.
Given that the DPO is essentially less conservative than the traditional descent profile has anyone found that it usually ends up being too optimistic and leaves you high of profile? Our newer Airbus aircraft seem to have this tendency and hence I stay below the profile at the start of the descent, those who manage right from TOD end up above. I have no idea if our newer aircraft have the DPO function but I'm assuming so as I see marked difference in the aircrafts ability to follow the profile versus older aircraft.