Bob Petruska, a member of Charlotte's Airport Community Roundtable, posted this really interesting analysis of Pre and Post Nextgen arrivals and departures. Using data provided by the Airport's Noise Abatement staff, Bob shows the much lower median altitude for arrivals and departures after Nextgen implementation. His findings are consistent with a previous post from Brian Cox regarding a sample set of arrivals.
Clearly it is indisputable that arrivals and departures at Charlotte's airport are significantly lower after the 2016-17 Nextgen implementation. Arrivals are on a more narrow rail further exacerbating the issue for some neighborhoods.
One has to wonder why this is the case with more sophisticated technology touted in the Nextgen implementation. Seemingly, new and more precise technology would enable practices and procedures to lessen the impact on dense single family neighborhoods. Instead, arrivals and landing are taking shorter, lower, and direct paths with little regard to noise and emissions dumped on neighborhoods.
It begs the question: is accommodating the desires of the airline industry the real decision driver?