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.
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.