Originally Posted by
pineteam
Hello guys,
RNP and RNP AR is a new concept for me and I have a doubt about the deviation scale. Assuming we are allowed to shoot a RNP AR approach with a RNP value of 0.2 or 0.3. During the approach on the progress page the RNP value will be automatically set to 0.3 and in case we are shooting a 0.2 RNP approach we have to manually insert the value in the progress page.
I would like to know if the lateral deviation, the scale of the L DEV will adapt to the value we insert in the progress page or is it a fix value?
Like RNP AR 0.2: 1 dot would be 0.1nm and RNP AR 0.3: 1 dot would be 1.5nm?
Because in the FCOM they say: Go around in case L/DEV reaches 2 dots or XTK reaches 1 RNP. So if the scale is the same for RNP 0.2 and 0.3 then we would go around too early with 2 dots out for a RNP AR approach with a value of 0.3 nm as 2 dots if the scale is fixed would be .2nm deviation only.
Thank you for your help.
Scaling is supposed to conform with the RNP value in use.