To do a VOR, ILS or RNP approach, I am turning to establish the final approach course. The approach chart shows I should descend to a lower altitude for intercepting the final descent path.
So, my question is how many degrees deviation from the defined final course can I have to start this descent?
Is 0.8 degree for ILS, 5 degrees for VOR and NDB, 0.1NM for RNP? And the same issue when intercept a VOR radial. Where can I find the official answers about those?