A80 CONTROLLER EXPERIENCED OPERATIONAL ERROR WHEN FAILING TO PROVIDE HEAVY JET SEPARATION DURING TRIPLE APPROACH PROCEDURES AT ATL.

Narrative

I WAS WORKING THE S FINAL DURING TRIPLE APCHS TO RWYS 8L; 9R AND 10. I HAD AN ACFT ON DOWNWIND AND ONE ON BASE WHICH APPEARED TO BE CONFLICTING. I NOTICED A LARGE GAP BTWN THE ARRS OF RWYS 8L AND 9R AND DECIDED TO TURN THE DOWNWIND ACFT'S BASE SOONER THAN NORMAL. WHEN I TURNED ACR X (B737) BASE TO STAGGER BTWN THE RWYS 8L AND 9R ARRS IT LOOKED GOOD. WHEN I CLRED ACR X FOR THE APCH; THE SEPARATION APPEARED APPROPRIATE. I NOTICED ACR X GO THROUGH THE RWY 10 LOC AND INSTRUCTED HIM TO CONTINUE HIS TURN TO THE LOC AND CAUTION WAKE TURB FROM THE HVY B767 (ACR Y) ON RWY 9R. THE PLT STATED THAT THE WIND BLEW HIM THROUGH AND HE WAS CORRECTING. IT APPEARED THAT I KEPT THE STAGGER OF 3 MI SEPARATION BTWN ALL ACFT INVOLVED. WHEN I WAS RELIEVED OF MY POSITION APPROX 30 MINS LATER; I WAS TOLD THAT THERE WAS A POSSIBLE ERROR. IN THE INITIAL VIEWING; IT APPEARED CLEAN UNTIL THEY NOTICED THE ACFT ON RWY 9R WAS A HVY. ACR X WENT THROUGH THE RWY 10 LOC; BUT NOT THE RWY 9R LOC. BUT ACCORDING TO THE NOTE IN THE 7110.65S 5-5-4E: '1) WHEN APPLYING WAKE TURB SEPARATION CRITERIA; DIRECTLY BEHIND MEANS AN ACFT IS OPERATING WITHIN 2500 FT OF THE FLT PATH OF THE LEADING ACFT OVER THE SURFACE OF THE EARTH;' WHICH SAYS THAT ACR X MAY HAVE BEEN SUBJECTED TO ACR Y'S WAKE TURB. I WAS NOT AWARE OF THE ADDITION OF THE NOTE. I BELIEVED THAT I WAS CLEAN SINCE ACR X DID NOT GO THROUGH ACR Y'S FLT PATH. I DON'T BELIEVE ACR X WAS SUBJECTED TO ANY WAKE TURB DUE TO THE FACT THAT THE WIND WAS OUT OF THE S BTWN 30-40 KTS. ACR X WAS ABOVE ACR Y MOST OF THE TIME AND 3 MI BEHIND HIM.