In article ,
Larry Dighera wrote:

So it would seem that Boeing is predicting the worldwide airline fleet
to double within the next 20 years. Is there any wonder that Boeing
is pushing for ATC modernization? Imagine the NAS with twice as many
airliners in flight at any given time. Clearly that is not possible
with the current technology and infrastructure. And with UAVs poised
to start filling the NAS with freight haulers, the NAS is going to
become even more congested well before 20 years hence.

While Boeing's solution is to increase the capacity of the NAS, would
it make more sense to just put a cap on the number of concurrent
flights? What would be the downside to such a restriction?


Unless more runways are built, the NAS capacity for aircraft will be
more limited by available runways than airspace.

--
Bob Noel
(goodness, please trim replies!!!)