One week ago, United 441 departed Orlando [KMCO] late in the day on a scheduled trip to O’Hare [KORD]. The flight history was normal up until the last moment, when the Boeing 757 slid off the edge of the runway and ended up in the mud at 12:53AM. FlightAware shows the flight made it to the gate two hours later.
It turns out, the flight was cleared to land on Runway 4L at a time when runway traction was reduced (after hours of light snow and mist) and the winds were poorly aligned with the runway (nominally a 70-degree crosswind per this official weather: METAR KORD 180651Z 33017G25KT 1SM R10L/P6000FT -SN BR BKN017 OVC043 M08/M11 A2994 RMK AO2 PK WND 33029/0618).
A group in the Chicago area, FAiR.org, issued this press release, making some very credible points. It appears that, in the mad rush to spend billions replacing the O’Hare runway system with a gazillion east-west runways, the busiest commercial airport in the world is losing its capacity to offer runways aligned with the wind, which are needed most during poor weather. The multi-parallel runways, and the NextGen reliance on automation (in the tower, and on the flight deck), are increasing runway throughput but decreasing safety margins.
Click on the image below for a scrollable view; the PDF file may be downloaded.
And what is driving all of this? The desire to be the world’s number one airport, in terms of operations per year. For a few years, Atlanta [KATL] took that title away from O’Hare. Atlanta operates using a set of five parallel east-west runways. Atlanta is Delta’s superHub, and an enormous fraction (well over half?) of arriving passengers never leave the airport… they sit and wait enjoying the comfortable seatpitch on the same plane, or they walk to another gate and depart on a different flight.
FAA is collaborating with the airlines with the same business plan at O’Hare, which is a superHub for both United and American. The safety consequences are not insignificant, but there are environmental impacts, too. Here’s two serious environmental problems with these superHubs:
- when a huge portion of arriving passengers are using the airport only as a connecting point, the number of flights in and out of the airport each day far surpasses what is needed to serve the actual community. So, you end up with double, triple, or more flights per hour as are needed. Under NextGen, some neighborhoods like Bensenville are inundated with nonstop noise related to the superHub airport.
- the carbon footprint for each passenger is greatly increased. Essentially, every time a passenger connects at a superHub not on the direct route between origin and destination, it increases miles travelled. It is quite common in the U.S. for airlines to offer discounted airfares to fill seats, so they offer itineraries that add 20% or more to the miles travelled. This translates to that passenger generating a proportional increase in fuel consuming to carry their butt/baggage to their destination. More time, more hassle, more CO2, but too many of us are conditioned to ignore that because we ‘stole a great deal’, saving $20 when we clicked the buy button.