DME/Best (worse) case track miles vs height (or achievable FPA) has to be considered for every descent. We are very lucky in so much that we are regularly fflying to destinations with pathetic ATC that we have become accustomed to playing to playing the system. But we can only be players if we know what we can do, hence the understanding between height and distance. Having said that I only ever recall one sim detail where we had the "bum's rush" in a descent. Fortunately, we are not forced to use VNAV; a system designed to create either unstable or uneconomic approaches - ATC never stick to your plans.
Last edited by Piltdown Man; 12th Feb 2017 at 10:41.