KSEA: ‘Fight the Flight 101’ Community Forum, Tonight

One of the only major U.S. airports growing right now serves the Seattle area, Sea-Tac [KSEA]. While most other U.S. airports remain flat or in decline, Sea-Tac is growing simply because Delta Airlines chose to build up a new hub there in 2012. Time will show other Delta hubs (KSLC, KMSP, KDTW) will diminish to feed the excess of flights to KSEA, where areas even 20-miles from the runway are now getting far more noise and pollutant impact.

Here is the announcement by Quiet Skies Puget Sound, a group of impacted residents who have had enough and are coming together, activating to fix this mess at Sea-Tac, pressing elected officials to serve, and FAA and other authorities to become transparent and accountable:

(click on image to view event announcement and learn more)

And, here are two slides from the conclusion of the aiREFORM presentation, to be given tonight at this community forum:

The problem is a broken and corrupted culture at FAA, enabling abuses upon people by money-interests in the aviation industry. This is a widespread problem, extending far beyond Sea-Tac’s impact zone. The entire aiREFORM presentation will be posted online in the near future.


KDCA NextGen Impacts May Trigger Yet One More Legal Action Against FAA

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.

An 1860 photograph of an actual water torture, used by prison authorities to drive Sing Sing prisoners insane. (source: The Burns Archive, via Wikipedia)

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.

See also:

The Need for Night-time Curfews near SuperHubs, so People can Sleep

The Heathrow Airport west of London is hands-down the busiest UK hub for transatlantic commercial passenger flights. Just as we see in the U.S., where NextGen is creating health problems and destroying communities, hundreds of thousands of residents are severely impacted by the long conga lines of low, slow and loud arrivals. Plus, the noise and fumes from nonstop departure streams deny sleep and increase stress, too. Some of the worst examples in the U.S. include: Boston, NYC-JFK, NYC-LGA, DC-Reagan, Chicago-O’Hare, Charlotte, Phoenix, and Seattle.

A recent article notes a Conservative minister calling for a strong ban on all flights for the 7-hour block, from 11PM to 6AM. This would be a very good first step toward reducing Heathrow impacts. Indeed, it not only should be done, but the curfew should extend further. Given the tendency of airlines to overschedule at the main superHub airports, we commonly end up with delays cascading at the end of the day; thus, 11PM arrivals actually land at midnight or even later. This has been a huge problem at LaGuardia [KLGA], for example. So, to ensure that these arrivals actually land before the 11PM curfew, CAA (and FAA, in the U.S.) should require:

  1. the airlines need to schedule the arrivals long enough before 11PM so that, if delayed by the end of the day, they can still land before 11PM; and,
  2. substantial penalties need to be imposed – and rigidly enforced – to incentivize airlines to clean up their schedules, so that slippage past 11PM never happens.

Here’s an archived copy of the article:

Click on the image below for a scrollable view; the PDF file may be downloaded.

Kudos to Mr. Hands for pressing forward on this proposed curfew at Heathrow. FAA should give serious consideration to imposing similar curfews at the busiest U.S. commercial hubs. If FAA refuses to do this, at the least FAA should pass the authority on, so that local officials and the communities can impose these restrictions.

MHFC: Technology and Design Achieve Nothing When Too Many Flights are Scheduled

An incredible airshow: Michael Huerta’s Flying Circus.

20160408.. Michael Huerta's Flying CircusIn service to the airlines, FAA has carefully worked to bypass environmental review procedures while also embarking on a scheme to abandon wholesale decades worth of noise mitigation procedures. In their effort to increase ‘throughput’, turns are being made lower and closer to the airports, for both departures and arrivals. This would reduce fuel consumption by a small amount, but the savings are routinely more than lost when excessive airline scheduling necessitates that ATC must issue delay turns (even entire delay loops) during the enroute/cruise portion of the flight.

It is really a circus. Controllers work harder, and pilots also work harder. Airline profits tweak slightly higher while many airports downsize and more flights become concentrated into a handful of superHubs. More delays are incurred, and repetitive-noise-pattern impacts increasingly damage neighborhoods that previously had no aviation noise issues. And what do FAA regulators do about it? Nothing. They just retire, take their pension, and sign up to work for the industry and as lobbyists.

An SFO arrival from Puerto Vallarta, on January 9th.

This Analysis looks at how NextGen fails at one of the few emerging superHubs: San Francisco [KSFO]. Here’s a screencap showing extensive delays ATC issued to an Alaska Boeing 737, during a January 9th evening arrival. Take a close look and you’ll see: the flight crew was issued vectors to fly a large box, then a smaller loop, then sent northwest for further descent and sequencing back into the arrival flow near Palo Alto.

Altitudes have been added to this graphic, so you can better estimate the impacts upon residents below, especially while ATC was routing the flight at the lower altitudes, from Pescadero to Portola Valley to Palo Alto and on to the landing.

An SFO arrival from Puerto Vallarta, on 3/10/17.

This is the type of inefficient maneuvering that happens everyday. Massive backups can be triggered by incidents that cause temporary runway closures or weather problems, but most of the time, these inefficiencies happen when too many flights are scheduled too close together, all because FAA refuses to properly manage arrival rates.

On days when there are not too many arrivals, this same flight normally looks like the example to the left: a direct route and a steady rate of descent, from Santa Cruz to where they turn final at the Bay, just west of the Dumbarton Bridge. This type of efficiency can become a reliable norm, but only if FAA goes one step further and imposes programs to stop airlines from exceeding workable airport arrival rates. Sadly, under NextGen, FAA is doing precisely the opposite: giving the airlines the sun and the moon, and all the stars if they have to, so long as the airlines will not oppose the expensive boondoggle that NextGen is. FAA wants Congress to throw more money at the agency, and that won’t happen, unless all the Av-Gov players ‘collaborate’ and act unified behind the NextGen fraud.

JetSuiteX Blowing Off Airport Authorities, Still Planning Scheduled Flights Out of Santa Monica

We’re down to the last two weeks. On February 6th, a charter operator wants to add to the impacts at Santa Monica with the start of scheduled passenger service on 30-passenger jets, offering flights to San Jose, Carlsbad, and Las Vegas. It appears the airport has not been certified to handle this type of operation, that for example the emergency response personnel and equipment is not sufficient for a possible accident by the operator ‘Delux Public Charter’ under JetSuiteX. But, corporate hubris ignores safety, legality, and environmental compatibility.

The scrollable PDF below shows a recent article by Beige Luciano-Adams, in a local paper, the Argonaut. This reporter did a very good job asking questions and getting candid answers from both sides. On the other hand, attempts to get candor from FAA were rebuffed. Indeed, in this whole matter, the worst character is FAA. They are truly acting as a captured regulator serving only aviation, enabling JetSuiteX to compel the City to waste resources protecting the City and people from excessive and unacceptable risks.

A real aviation regulator would have put a stop on JetSuiteX in December, shortly after they started selling tickets online. A real aviation regulator also would have ordered JetSuiteX to cease selling of these tickets with discounts for Santa Monica residents, a practice that is discriminatory and thus appears to be illegal. A real aviation regulator would have worked hard to bring the operator and the airport authority together to quickly resolve all issues, trying earnestly to create air service, but rejecting the proposal if it failed safety standards and other requirements.

FAA has done nothing … which is part of the collaborated plan.

Readers are encouraged to study this article. Reader comments/analysis shared with aiREFORM may be added to this aiREFORM page, with or without attribution, at the request of the reader.

Click on the image below for a scrollable view; the PDF file may be downloaded.

To read another local article, and to also see an analysis showing how poorly JetuiteX has done selling passenger seats to Santa Monicans (despite the discriminatory pricing), click here.

FAA’s Refusal to Manage Airport Capacity

Satellite-based (aka, NextGen) technologies have been in use for decades, and at most airports they have enabled minimization of distance flown and fuel burned. In fact, at the very few airports where NextGen is failing, the problem is not the technologies: it is too many flights, and FAA’s lazy refusal to impose more restrictive airport flow rates.

If you spend any time studying today’s routes and flight profiles for U.S. commercial passenger flights (and it is REALLY easy to do, with FlightAware, FlightRadar24, and other websites that present FAA’s ATC data), you will see that all flights are already capable of and actually flying optimized routes: long, direct flights from origin airport to destination airport, with smooth and continuous climbouts and descents. But, for a small handful of airports, you will also see that ATC ends up creating long conga lines of low, slow and loud arrivals (the Long Island Arc of Doom is the classic example) … simply because there are too many flights arriving in too small a time window.

The root problem is the hub system, and FAA’s policy of enabling undisciplined hub scheduling by the dominant airline. FAA does this to maximize a theoretical number called ‘runway throughput’, and thus to help the airlines to maximize their profits. In simplest terms, a hub airline can tweak their profits upward a percentage point or two, if they can process say a dozen simultaneous arrivals, sorting the passengers quickly between gates, then send all those flights outbound at exactly the same moment.

Obviously, this is only theoretically possible. Because of limited runway capacity, each arrival and each departure needs roughly a one-minute window where the runway is theirs alone, so the scheduled ‘banks’ of a dozen ‘simultaneous arrivals’ and ‘simultaneous departures’ get spread out over two 12-20 minute windows. To safely handle the arrival banks, ATC has to level off the arrivals and extend the arrival pattern to long final legs, spacing the flights at roughly one-minute intervals; to process the departure banks, ATC issues immediate turns on departure (with terrible impacts in places like Phoenix), so that takeoff clearances can be issued in rapid succession.

The reality that FAA and Bill Shuster refuse to accept is this: runway capacity is limited, and we can pretend to be creating new technological solutions, but so long as there are only so many arrivals that a key hub airport can handle per hour, it is folly for FAA to let hub airlines schedule in excess. It only guarantees delays, which then cascade into other airports that otherwise would never see delays. Also, it is important to note that hourly flow rates do not address the problem. Delays happen every time, when just two arrivals aim to use one runway at the same minute. So, if FAA is to work with the airlines to design delay-free arrivals, the schedule needs to look at small time increments, even how many arrivals every 5-minutes. Fortunately, this finer data granularity is easily studied with todays digital processing capabilities.

The solution is obvious: we need Congress to change the laws, so as to disincentivize excessive hub scheduling; and, we need FAA to aggressively restrict airport flow rates at key delay-plagued hub airports, so that the conga lines never need to happen.

An Example: Seattle Arrivals

Here’s an example of what happens at an airport, when just one more flight creates enough traffic, to necessitate ATC stretching the arrival pattern. Seattle is a great example, because it is a major hub airport but [KSEA] is far from other major airports, thus flight patterns are not made more complicated by airport proximity issues. The dominant airline is Alaska (including its feeder, Horizon), but Delta began aggressive hub growth in 2012. The airport has triple-parallel north-south runways; a south flow is by far the dominant airport flow configuration. Whenever ATC has enough arrivals to reduce spacing to less than two minutes apart, the arrivals are extended downwind, turning base abeam Ballard (12nm), abeam Northgate Mall (14nm), abeam Edmonds (20nm), or even further north (see this graphic that shows distances on final from the runway approach ends).

The scrollable PDF below has sample arrivals on December 29th, with altitudes added to the screencaps, to illustrate level-offs and descent profiles. Five sample arrivals are included:

  • Horizon #2052 vs Horizon #2162 vs Horizon #2405: all are Dash-8s, from KPDX. Horizon #2052 has no traffic and is able to use the preferred noise abatement arrival route over Elliott Bay; the other two flights both have to extend to well north of Green Lake, including a long level-off at 4,000ft.
  • Alaska #449 vs Alaska #479: both are from KLAX. Alaska #449 has no traffic and is able to use the preferred noise abatement arrival route over Elliott Bay; Alaska #479 has to extend to well north of Green Lake, including a long level-off at 3,800ft, starting to the west of Alki Point.
Click on the image below for a scrollable view; the PDF file may be downloaded.

UPDATE, 01/17/2017 — further details and graphic added, re distances on final for KSEA south flow.

Why They are so Upset in Malverne and Under the L.I. ‘Arc of Doom’

Below are two scrollable PDF plots, one for KJFK Runway 4L departures impacting Malvern, and the other for KJFK Runway 22L arrivals using the infamous low-altitude ‘Arc of Doom’. Both plots were extracted from the recent noise study report done for FAA, by ESA, posted online at the airport authority PANYNJ website (report referenced in this article). Be sure to expand the view to see the finely detailed color-dots for these routes.

Click on the images below for a scrollable view; click here for a downloadable copy of the first PDF (Departures Runway 4L) and here for a downloadable copy of the second PDF (Arrivals Runway 22L) .

Generally speaking, repetitive noise impacts are more problematic the closer the flights are to the ground, but impacts tend to abate to a tolerable level at or above 8,000 feet altitude (blue dots on the Departure PDF, above).

Note also the extraordinary added distances being flown for these arrivals (see the light gray dots, at or above 6,000 altitude). Anyone who has been a passenger on a flight to KJFK has experienced the interminable arrival path that chugs along at low altitudes. This added work by ATC is created by too many flights, in too small an arrival window, forcing controllers to over-control the flights. The simplest solution, to reduce delays and noise and air pollutants, and to optimize efficiency, is for FAA to start managing capacity: setting and enforcing much lower hourly arrival rates and departure rates.

And What are PANYNJ Authorities Doing About It?

After years of complaints, Part 150 Studies were ordered for KJFK and KLGA. This formal process is designed to create an enormous volume of documents, many of which are almost indecipherable, to feed the illusion that citizens have an opportunity to aid in a decision-making process. In truth, it is all only for show; there is no meaningful or effective citizen involvement.

Here’s a challenge: go to this website (PANYNJ’s official webpage for the KJFK Part 150 Study) and spend a few minutes reading it and intuitively navigating. Try to learn from it, and see what valuable info/data you can find. More likely than not you will quickly leave your exploration, because PANYNJ, FAA and their well-paid pro-aviation consultant have created such an incredible volume of technobabble, and presented it in such a bizarre layout, that only the most obsessive individuals will press onward past the many click-deadends and long download times. I located some documents and spent well over an hour downloading the October 2016 ‘Draft Noise Exposure Map (NEM) Report’; 13 PDF files, measuring 1,349 pages (149Mb) total. Just finding and copying the documents is a substantial effort, and then to read all those pages? Do they really expect the average concerned citizen to do this much work??? Of course not.

If you liked that challenge, do it again at this website (same Part 150 page design, this time for KLGA!).

This appears to be what has evolved. Whether it is for a small and nearly dead airport in MN, AR, or wherever) or a huge chunk of airspace such as the LA Basin or the NYC area, FAA has evolved the public participation process (a requirement dating back to even before the 1946 Administrative Procedures Act) to make sure the average citizen is blown away with so much documentation (and much of it superfluous) that they simply give up even trying.

UPDATE, 11/25/2016: — A recent email by a resident with Plane Sense 4 LI points out repetitive noise impacts on Malverne, caused by approaches to LaGuardia. Click here to view an archived copy.

An Example of a Serious Weather Delay … but Delays Can Also Happen by Scheduling ‘Too Many Arrivals’

A recent day with foggy weather in the Puget Sound area produced a few examples of weather-related delays. ksea-20161110at1009-jza8089-arr-f-cyvr-map-data-wxdlasIn the example presented below, Jazz Air 8089, a Dash-8, departed Vancouver [CYVR] on a short 30-minute flight to SeaTac [KSEA]. The flight departed at 8:55am, just as the KSEA visibility was reducing to a half mile. The crew was turned toward the Olympic Peninsula and issued turns to delay their arrival.

Here is a screen-cap of the METAR weather sequence, reading from bottom to top; thin red boxes have been added, marking the departure time at CYVR and the arrival time at KSEA. The column in the middle is most critical, showing visibility deteriorating from 10-miles to a half-mile; the magenta text to the right, reading BKN001 and VV001 is also significant, indicating low clouds and fog obscuring the sky at 100′ above the surface.ksea-20161110-metar-0825am-to-1120am-low-wx-markedupThe flight altitudes and times at points on the JZA8089 route have been added to this enlarged map view of the delay portion of the flight, over the Olympic National Park:ksea-20161110at1009-jza8089-arr-f-cyvr-map-analysis-of-dlas-over-olypennIn normal weather conditions, the flight is routine, even boring to both pilots and ATC. ksea-20161109at0929-jza8089-arr-f-cyvr-map-dataksea-20161111at0950-jza8089-arr-f-cyvr-map-dataksea-20161112at0915-jza8089-arr-f-cyvr-map-dataTo the left are screen-caps for the same flight on days before and after… on 11/9, 11/11, and 11/12. In all cases, KSEA is in a South Flow, so the minor variations in these three flights are almost entirely due to other arrival traffic.

In an extreme case, if traffic volume is sufficiently large, ATC may need to issue a holding loop, or multiple turns to achieve even 20+ minutes of delay. Note on these screen-caps, the busiest day of the week for air travel (Friday) shows the most extreme excess turns to final; the slowest day of the travel week (Saturday) shows essentially no added delays.

One way that FAA fails to prevent excessive delays is by refusing to manage capacity. Especially at hub airports, arrival rates are set too high, so as not to restrict the airlines. In their NextGen studies, FAA has repeatedly referred to maximizing ‘runway throughput’. The problem, though, is that when arrival rates are set too high, it takes just one minor weather glitch to create a cascade of delays, one airplane after another, often for hours. In the worst cases, typical at LaGuardia Airport, cascaded delays can cause arrivals to finish well after midnight, even more than two hours beyond their schedule times. And these delays nearly ALWAYS result in continuous arrival streams, with repetitive noise patterns impacting residential neighborhoods, a problem being exacerbated under NextGen.

(All graphics & flight data from FlightAware)

Unspinning the Spin: A Liberal Rant by the Conservative Wall Street Journal

It is bad enough that the mainstream media tries every trick in the book to manipulate the outcome of our major elections … and, more often than not, they succeed. Their greed and power know no boundaries. No surprise, then, that the media applies these same propaganda tactics to prop up industries and bogus programs, such as NextGen and the Av-Gov Complex co-conspirators’ latest stab at privatizing ATC.

A new opinion piece was published yesterday by the Wall Street Journal editors. One reader’s comments summarize it very well: “…Although I think the FAA is completely inept and has bungled the NextGen rollout on all levels, some of the WSJ’s statements were very unfair (aka the old ‘World War II technology’ argument), and I fear the airlines being in charge even more.”

Another reader’s comments are drawn from his profession, as an airline pilot with extensive knowledge about labor and aviation politics:

“This article has absolutely nothing in it except for many errors and convenient omissions. For example, the comparison to the 1960’s is totally inaccurate because today all aircraft have the ability to fly direct, point-to-point with GPS and other similar navigation devices that all airliners have, even the “older” ones. The United States has complete, 100% radar coverage, so the statements referring to enroute delays are totally incorrect. Plus, it states that Schuster’s proposal “isn’t perfect” without pointing out what those imperfections are.

This is “airline deregulation” all over again, but this time targeting ATC. As far as FAA “oversight” goes, just look at the fines the airlines have accumulated for improper maintenance—and those are only the cases that were caught.

The true problem lies in the terminal areas of the busiest airports and neither NextGen nor any other fancy-sounding baloney has come even close to resolving that. All it has done is increase the noise levels for airport neighbors.”

Here’s a PDF of aiREFORM’s analysis of the WSJ piece, with numerous rebuttal notes added as footnotes:

Click on the image below for a scrollable view; the PDF file may be downloaded.

Clearly, this will not be the last of an ongoing series of lame propaganda pieces. The collusion by members of the Av-Gov Complex – called a ‘collaboration’ – will not end until they pull off yet another change that serves industry profits at the expense of everyone else. A Congress weakened and compromised by too much focus on fundraising may eventually capitulate to this fraudulent campaign.

Airports and Cities: Can They Coexist?

As often happens, a good lead was tweeted regarding an interesting article. This time, @NoFlyDay tweeted with a link to an article by Ed Ayres, Airports and Cities:  Can They Coexist?, archived at WorldWatch.org. The article was first published in the July/August 2001 issue of  World Watch Magazine, for which Mr. Ayres served as editor.

The article points toward the enormous land-grab to create the Denver International Airport (DIA) or [KDEN]. That massive project, undertaken from 1989 into 1995, was intended to accommodate major hubs that pre-existed in Denver, for both United and Continental. But, Continental decided to abandon their Denver hub (and decades later was merged with United), causing annual operations to decline substantially. This huge new airport has never come even slightly close to operating at the capacity it was built for.

The article also notes how, in shifting the burden to airline passengers to drive long distances away from their homes, total air pollution was substantially increased … and all at public cost. All this was done ostensibly to better serve the general public, but in truth served only to improve airline profits. *until ten years ago, the strategy at Southwest was to completely avoid the major hubs for the legacy airlines, such as ATL, BOS, DEN, MSP and SFO … and even when their strategy was changed, they were careful to not really ‘compete’ with the dominant carrier at each hub.And, as is the case throughout the U.S. commercial aviation system, Denver has virtually zero competition on routes, and serves as a hub dominated by one airline: United (with a lesser hub by Southwest, who only began serving KDEN in 2006*).

Two other interesting aspects to contemplate while reading this article (and the related documents accessible via the links below):

  1. first, all of these documents were researched and created years PRIOR to the inception of NextGen by FAA and industry stakeholders; and,
  2. second, the article came out just prior to the 9-11 attacks, which arguably were used to justify enormous ‘Shock Doctrine’ changes in all aspects of U.S. commercial aviation, most significantly modifying security, ATC procedures, and environmental impact mitigations.

Here are links to a PDF copy as well as some related documents archived at aiREFORM.com: