FAA is presently being sued by groups across the nation, due to their botched NextGen implementation. It looks like another lawsuit may be initiated, seeking relief for residents in Bethesda, MD. See the Bethesda Magazine article (archived copy below, in a scrollable PDF).
Essentially, what is happening is FAA is tweaking upward the number of operations handled at Washington National Airport [KDCA], to enable four airlines (American, Delta, JetBlue and Southwest) to schedule heavier arrival and departure pushes. To facilitate this, FAA got Congress to pass legislation in early 2012 that eliminated the requirement to do real environmental assessments (this is the infamous ‘CATEX’ issue; click here to see documentation of a CATEX example impacting residents near LaGuardia).
Using CATEX to approve and implement NextGen procedures has turned out to be a huge failure. The root failure is that FAA’s DNL noise metric does not capture the very real and damaging noise impacts caused by repetitive flights passing one after another at low altitudes, using automation to track the same narrow path. This narrow route concentration is very clearly indicated in the graphics, within the article below. The repetitive noises go on for days and even weeks on end; people suffer sleep loss and elevated blood pressure, and some may be going crazy, but their problems are all dismissed by FAA. Oddly, FAA insists that by averaging those weeks over the entire calendar year, no damages are done ‘on average’. This is sort of a variation of a bad strategy for abating pollution: “the solution to pollution is dilution.”
The graphics in this article appear to depict the pre-NextGen and post-NextGen departure tracks. Montgomery County is concerned about the intense concentration for north flow departures heading northeast to NYC and Boston, etc.; the NextGen RNAV departure begins a right turn over the RNAV fix named ALEEX (Cabin John Parkway and I-495), then passes DOGUE (roughly 2-miles NW of the Mormon Temple), inundating North Bethesda. Similarly, residents in the Fort Hunt neighborhoods of Virginia are impacted, because the new RNAV departure procedure in south flow turns west at lower altitudes, roughly two miles north of Mt. Vernon … instead of climbing another couple miles southbound over the Potomac River. Again, all to save the airlines a smidgeon of money, while shifting a heavier noise and pollutant cost onto previously peaceful residential communities. The people below are frustrated not just because the noise pattern persists for hours on end (and can repeat each day for weeks on end), but also because they are trying to squeeze accountability out of one of the most intransigent and insensitive federal bureaucracies ever to exist: today’s FAA.
Click on the image below for a scrollable view; the PDF file may be downloaded.
The Larger Picture
On a national scale, FAA is facilitating hub concentration (see this aiReform Post). Each of the hub-growth airports is also not just seeing a larger number of flights, but the flights are serving a higher percentage of through-passengers, who never even leave the airport terminal. And, for each of these few growing hub airports, other airports are in sharp decline. So, as KDCA grows, there is a shift of flights away from Washington-Dulles [KIAD] and Baltimore-Washington [KBWI]; Dulles is now down 47% from peak traffic year (2005), and BWI is now down 23% from peak traffic year (2001). This is precisely the problem that is growing at a tiny few other major U.S. hub airports, such as Seattle [KSEA] (where Delta is rapidly expanding its schedule) and at both Kennedy [KJFK] and LaGuardia [KLGA] in the New York City area. The KSEA hub expansion is diminishing Portland [KPDX] (down 31% from peak traffic year 1997) and Salt Lake City [KSLC] (down 30% from peak traffic year 2005). In the NYC area, Southwest is expanding while gutting service at Islip [KISP] (down 48% from peak traffic year 2000) American expansion has all but eliminated the use of Pittsburgh [KPIT] as a hub (down 69% from peak traffic year 1997); Delta expansion has all but eliminated the use of Cincinnati [KCVG] as a major airline hub (down 73% from peak traffic year 2004).
NextGen route concentration, caused by autopilot use of RNAV routes, is a serious impact that FAA chooses to totally ignore. Think about it: wherever you live, chances are that any aircraft flying through is not noticeable so long as it is roughly 2-miles or more away from directly overhead. In the case of Bethesda, the pre-NextGen dispersal of departures meant each resident below was subjected to randomized and irregular noise events; but, post-NextGen, the noise events are concentrated and repetitive, like a Chinese dripping water torture.
Of course, this picture reflects the attitudes and values of our nation in 1860. Today, we have technologies that can benefit us, enhancing quality of life … but only if we manage them intelligently.