Haha, thank you for your reply. Of course, I am concerning lateral guidance since VOR doesn’t have glide slop. And mmm345 answered my question so well! I am still looking for the counterpart in FAR. Should be similar. In spite of this, thanks B2N2 help us review VDP and the formula. While CDFA is taking place VDP. I nearly forget this theory.
BTW, where did you get this lovely chart? Far better than Jeppesen. I tried use VNAV to fly this approach several times, but it always end up with very high speed. Seems by manual is still the best way. But it will greatly increase the work load. Especially when fly in this narrow valley. Not quite correspond to the topic, but very glad to talk about it in another thread if anyone interested.
Last edited by chx230; 6th Jul 2021 at 15:36.