Originally Posted by
LEVC
Do you correct DA for an ILS if it is -20C?, I take that the answer is a yes, same should be done for other type of approaches.
Completely different case though, the ILS is a fixed geometric path in space, the VNAV approach is not. And if you, in direct breach of the relevant AMC, adjust your DA, you put it quite a bit farther away from the runway, whereas an adjusted DA on an ILS simply puts it where it should be anyway. And yes, the DA is taken into account for the minimum temperature of the procedure, in fact it is one major point there, choose a higher temperature and you can accept a lower DA, chose a lower temperature and you have to choose a higher one.