pton , ▁Georgia , ▁United ▁States . ▁ ▁The ▁primary ▁responsibility ▁of ▁Atlanta ▁Center ▁is ▁sequ encing ▁and ▁separation ▁of ▁over - fl ights , ▁arrival s , ▁and ▁depart ures ▁in ▁order ▁to ▁provide ▁safe , ▁order ly , ▁and ▁exp edit ious ▁flow ▁of ▁aircraft . ▁ ▁Atlanta ▁Center ▁is ▁the ▁bus iest ▁air ▁traffic ▁control ▁facility ▁in ▁the ▁world . ▁In ▁ 2 0 1 7 , ▁Atlanta ▁Center ▁handled ▁ 3 , 1 2 0 , 4 9 9 ▁aircraft ▁operations . ▁ ▁Atlanta ▁Center ▁covers ▁approximately ▁ 1 2 9 , 0 0 0 ▁square ▁miles ▁of ▁the ▁Southern ▁United ▁States , ▁including ▁parts ▁of ▁Georgia , ▁Alabama , ▁South ▁Carolina , ▁North ▁Carolina , ▁Tennessee , ▁Kentucky , ▁West ▁Virginia , ▁Virginia , ▁and ▁touch es ▁parts ▁of ▁Florida , ▁and ▁Mississippi . ▁ ▁Atlanta ▁Center ▁borders ▁five ▁other ▁Air ▁Route ▁Tra ffic ▁Control ▁Cent ers , ▁including ▁Houston ▁Air ▁Route ▁Tra ffic ▁Control ▁Center , ▁Jackson ville ▁Air ▁Route ▁Tra ffic ▁Control ▁Center , ▁Washington ▁Air ▁Route ▁Tra ffic ▁Control ▁Center , ▁Indian apolis ▁Air ▁Route ▁Tra ffic ▁Control ▁Center , ▁and ▁M emph is ▁Air ▁Route ▁Tra ffic ▁Control ▁Center . ▁Z TL ▁over lies ▁or ▁ab uts ▁many ▁approach ▁control ▁facilities ▁( including ▁Atlanta , ▁Charlotte , ▁Gre ens bor o , ▁Kno x ville , ▁Ch att ano oga , ▁and ▁B irmingham , ▁Alabama ▁approaches ). ▁ ▁References ▁ ▁External ▁links ▁ ▁Atlanta ▁Center ▁We ather ▁Service ▁Unit ▁( C WS U