CJAM,
Can you please clarify this point for me?
If you are in a cat b a/c you can maintain msa until you get to 4.2 nm then start your descent down to no lower than the cat c circling minima, then @2.66nm you will be closer to the cat b circling minima.
Are you saying that you switch between Cat B and Cat C during the approach? If so, I would have to say that I don't agree with your method. You may choose to change categories, but once doing so, the approach must be completed in the newly elected category.
I would also recommend that a constant rate of descent from the applicable fix to the minima, will give you a more stabilised approach with no need to "dive down". All approaches are designed with a constant rate profile which is shown on the chart. (Although you can use the dive and drive method, in the interest of safety and passenger comfort the constant rate must be the best option IMHO)
Zhaadum,
You asked:
More limiting on cloud base and vis too...What is the advantage of it?
The one major advantage is SPEED!! and lots of it!!
Cheers, HH.
