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Originally Posted by daharris80
I thought the South terminal complex was intended to be built between the 4th and 5th runways, is there enough room to put a 6th runway and a terminal complex between the 4th and 5th runways?
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It would take a significant chunk of room between the two runways, but there would still be room for a terminal complex. My guess is that the long range plan is to have AirTran and regional jets use the south terminal complex, and keep 737s and larger airplanes at the main terminal complex.
A sixth runway on the existing footprint of the airport is possible between runways 9R/27L and 10/28. They'd just have to build another bridge and taxiway across I-285. But I believe that building it between the two, assuming it's built just adjacent to the north of 10/28, means that the existing 10/28 would be a landing-only runway and the new runway would be strictly for takeoffs. This is because there wouldn't be enough room between the new runway and existing 9R/27L for both runways to have the same type of operation at the same time.
This way, they can keep trimultaneous landing and takeoff operations in almost all weather conditions. It would increase overall operational capacity by 15% at most, but it does make sense assuming that such a runway is utilized primarily by regional jets. That's the main reason the fifth runway was built in the first place.