Approach procedures are designed by CAT, BUT there are a few forward thinkers that realize the actual FAS.
(ie the FAS of a 737-800 is not 140KTS for the final segment..)
I understand the parameters you are talking about, but those are to optimize the FAS, and put everyone on the same page. As you note, a fixed point and a fixed speed to aim for.
Last edited by FlightPathOBN; 20th June 2012 at 23:03.