Narrative:

I was working radar position S4 (sby) combined with radar position (23) ccv at ZDC. Traffic was both busy and complex with several aircraft on 2 frequencys. Air carrier X was on standard route to jfk, air carrier Y was on a non standard route to bos, a situation that I was unaware of. My assistant was either unaware of bad route or did not pass that information on. Approximately 3 mins before the occurrence the 2 aircraft involved began to conflict alert with each other. I suppressed this because I was under the belief that the aircraft was on the standard route and the conflict alert often is activated in this situation due to the angle of the airways. After a while I noticed air carrier Y further east of the route than he should have been and took evasive action on him and the aircraft he was in conflict with, air carrier X. After separating the aircraft I issued the correct routing to air carrier Y. Supplemental information from acn 352707: was busy performing d-side functions during heavy volume when standard separation minimum requirements were compromised.

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Original NASA ASRS Text

Title: ARTCC RADAR CTLR WORKING 2 ACR ACFT AT SAME ALT THOUGHT THAT THEIR RTES DIVERGED PRIOR TO SWL AND DID NOT SEE THE POTENTIAL CONFLICT LTSS OCCURRING UNTIL THE CONFLICT ALERT ACTIVATED. ONE ACR WAS TURNED AND SEPARATION REGAINED AFTER THE SYS ERROR HAD OCCURRED.

Narrative: I WAS WORKING RADAR POS S4 (SBY) COMBINED WITH RADAR POS (23) CCV AT ZDC. TFC WAS BOTH BUSY AND COMPLEX WITH SEVERAL ACFT ON 2 FREQS. ACR X WAS ON STANDARD RTE TO JFK, ACR Y WAS ON A NON STANDARD RTE TO BOS, A SIT THAT I WAS UNAWARE OF. MY ASSISTANT WAS EITHER UNAWARE OF BAD RTE OR DID NOT PASS THAT INFO ON. APPROX 3 MINS BEFORE THE OCCURRENCE THE 2 ACFT INVOLVED BEGAN TO CONFLICT ALERT WITH EACH OTHER. I SUPPRESSED THIS BECAUSE I WAS UNDER THE BELIEF THAT THE ACFT WAS ON THE STANDARD RTE AND THE CONFLICT ALERT OFTEN IS ACTIVATED IN THIS SIT DUE TO THE ANGLE OF THE AIRWAYS. AFTER A WHILE I NOTICED ACR Y FURTHER E OF THE RTE THAN HE SHOULD HAVE BEEN AND TOOK EVASIVE ACTION ON HIM AND THE ACFT HE WAS IN CONFLICT WITH, ACR X. AFTER SEPARATING THE ACFT I ISSUED THE CORRECT ROUTING TO ACR Y. SUPPLEMENTAL INFO FROM ACN 352707: WAS BUSY PERFORMING D-SIDE FUNCTIONS DURING HVY VOLUME WHEN STANDARD SEPARATION MINIMUM REQUIREMENTS WERE COMPROMISED.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.