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[quote user="blue streak 1"] [quote user="Sam1"] Good points!  Wanna relieve airport congestion?  Use bigger airplanes. The argument about airport congestion is a bit overblown. Those who make it are overlooking the development of NextGen, which will be a significant improvement over the current air traffic control system, as well as using larger airplanes. [/quote] bigger airplanes?  watch out  --  takeoff and landing separation has to be increased when following a larger plane. from 2 miles for small planes to 3 miles for B-737 type airplanes, to 5 -  6 miles following a B767, B777, to maybe 7 miles following a 747-400, A-380.  The effect of newer planes uning super critical wings and winglets on the planes' downdrafts have not been studied enough.  SO scaling up with larger planes does not necessarily increase the capacity by number of seats added.  Would like to know the number of takeoffs an hour at JFK or LAX airport when the big international departure rushes occur ( almost all planes then are the above mentioned heavys ) with the airports each using 2 runways for takeoff.   Just wait for the first wake turbulence caused landing or takeff accident to gum up the works. As for next gen  ---  a $40 -50 B investment subsidized by the taxpayers.  While traveling the airways most of what is ballyhooded is already taking place.  Was able to get direct most times to initial arrival fix.  It still comes down to the congestion at airports landings and takeoffs. [/quote] Higher capacity airplanes are part of the answer. Better scheduling is also part of it.  Works between Melbourne and Sydney.  Can work for many corridors in the U.S. Higher capacity airplanes does not necessarily mean a heavy.  For example, Southwest is upgrading its fleet to incorporate B-737-800 models.  They have 38 per cent more seating capacity than the 700 models. In the United States the heaviest air corridors are LA to SFO, NY to Wash, etc.  LA is served by four airports; SFO by three, NY by four or five, and Wash by three.    NetGen will be paid for like most of the airways in the United States. By user fees!
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