Here's the Arrival Acceptance rate with the RAPC demand management reductions. This time, however, the purple lines have moved up to show the 10% increase in Arrival Acceptance rate expected with AVOSS( Aircraft VOrtex Spacing System). Actually they predict more than 10% but, hey, let's be fair.

Note there no peaks over the minimum SOIA/AVOSS line.

So the bottom line of all this is that SFIA can solve the problem, without new runways, within five years. Will there be delays after implementing all of this? Do bears live in the woods? Of course there will be. See the delay section of these pages for more info. But technology and demand management will achieve as much delay reduction as new runways with significantly less environmental damage.

You may want to argue that the reduction due to demand management will not be uniform throughout the day as I have said. That's true but notice that with demand management the peaks will be reduced and the average reduction will be 19.3%. So one time slot may only have a 15% reduction of flights while another might have a 24.6% reduction. There may have to be some form of slot controls to force flights into a better time.

You may also want to know how AVOSS would affect the takeoffs. One problem with 60 arrivals per hour is that the planes taking off need to go between the planes landing. If the planes landing are closer together in time, doesn't that make it harder for planes to take off? Not if Demand Management has been implemented. The chart above shows the maximum arrival rate would be 41 planes per hour. That leaves lots of time for the planes taking off. And those planes must come from somewhere - they don't manufacture planes at SFIA - so the average number taking off can't be greater than the number landing over a period of time.