Narrative:

Aircraft Y flight to clt needed to be in trail with 3 other aircraft going to clt. Aircraft Y was put on a 275 degree heading for spacing. Aircraft X was a departure out of cvg going over psb at FL350. Another situation presented itself and aircraft Z had to be climbed to FL350 sbound. This put aircraft Y in conflict with aircraft Z. Aircraft Y was put on a 200 degree heading to avoid aircraft Z. This put the aircraft Y in conflict with aircraft X. Aircraft X attempted to check on frequency twice; during a time when more critical clearance needed to be given. On the third check-in from aircraft X; he asked who the traffic was off his left side. Headings were issued immediately; both aircraft responded to RA's. Aircraft Y descended and aircraft X climbed. Both aircraft were returned on course. Supplemental information from acn 778056: aircraft Y was being vectored to accomplish in trail spacing requirements. At the time of the incident; another traffic situation was also going on requiring multiple clrncs and coords with other sectors. Then aircraft X called again; but this time asked about traffic off his left; which is what called our attention to the situation between aircraft Y and aircraft X.

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Original NASA ASRS Text

Title: ZOB DEVELOPMENTAL EXPERIENCED OPERROR AT FL350 WHILE FOCUSED ON ANOTHER PROBLEM AND FAILING TO RECOGNIZE A DEVELOPING CONFLICT.

Narrative: ACFT Y FLT TO CLT NEEDED TO BE IN TRAIL WITH 3 OTHER ACFT GOING TO CLT. ACFT Y WAS PUT ON A 275 DEG HDG FOR SPACING. ACFT X WAS A DEP OUT OF CVG GOING OVER PSB AT FL350. ANOTHER SITUATION PRESENTED ITSELF AND ACFT Z HAD TO BE CLBED TO FL350 SBOUND. THIS PUT ACFT Y IN CONFLICT WITH ACFT Z. ACFT Y WAS PUT ON A 200 DEG HDG TO AVOID ACFT Z. THIS PUT THE ACFT Y IN CONFLICT WITH ACFT X. ACFT X ATTEMPTED TO CHK ON FREQ TWICE; DURING A TIME WHEN MORE CRITICAL CLRNC NEEDED TO BE GIVEN. ON THE THIRD CHK-IN FROM ACFT X; HE ASKED WHO THE TFC WAS OFF HIS L SIDE. HDGS WERE ISSUED IMMEDIATELY; BOTH ACFT RESPONDED TO RA'S. ACFT Y DSNDED AND ACFT X CLBED. BOTH ACFT WERE RETURNED ON COURSE. SUPPLEMENTAL INFO FROM ACN 778056: ACFT Y WAS BEING VECTORED TO ACCOMPLISH IN TRAIL SPACING REQUIREMENTS. AT THE TIME OF THE INCIDENT; ANOTHER TFC SITUATION WAS ALSO GOING ON REQUIRING MULTIPLE CLRNCS AND COORDS WITH OTHER SECTORS. THEN ACFT X CALLED AGAIN; BUT THIS TIME ASKED ABOUT TFC OFF HIS L; WHICH IS WHAT CALLED OUR ATTN TO THE SITUATION BTWN ACFT Y AND ACFT X.

Data retrieved from NASA's ASRS site as of May 2009 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.