Narrative:

During a dtw inbound push, departures were climbing west off cle, and dtw arrs were being vectored for spacing. I received aircraft X, an inbound for ptk. For his descent, he was put on a 340 degree heading and descended to 17000 ft. Another sector called pointing out aircraft Y, climbing southeast off dtw. I accepted the pointout with an interim altitude of FL230 in the data block. Later, they changed the interim altitude on aircraft Y and I thought he was descending into cle. They then keyed in FL230 again and the conflict alert activated. After the conflict alert activated, they keyed in 16000 ft. I made sure aircraft X was stopped at 17000 ft and turned him left to a 260 degree heading for separation. Aircraft Y, however, kept climbing through 16000 ft and I issued a safety alert to aircraft X. He reported the DC9 in sight and turned took effect. Separation at closest was approximately 3.9 mi and 500 ft.

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Original NASA ASRS Text

Title: ZID CTLR INTRAFAC COORD DOES NOT CLARIFY ADJOINING SECTORS CLRNC INTENT OF A DC9 RESULTING IN A LOSS OF SEPARATION WITH AN F2TH CPR JET.

Narrative: DURING A DTW INBOUND PUSH, DEPS WERE CLBING W OFF CLE, AND DTW ARRS WERE BEING VECTORED FOR SPACING. I RECEIVED ACFT X, AN INBOUND FOR PTK. FOR HIS DSCNT, HE WAS PUT ON A 340 DEG HDG AND DSNDED TO 17000 FT. ANOTHER SECTOR CALLED POINTING OUT ACFT Y, CLBING SE OFF DTW. I ACCEPTED THE POINTOUT WITH AN INTERIM ALT OF FL230 IN THE DATA BLOCK. LATER, THEY CHANGED THE INTERIM ALT ON ACFT Y AND I THOUGHT HE WAS DSNDING INTO CLE. THEY THEN KEYED IN FL230 AGAIN AND THE CONFLICT ALERT ACTIVATED. AFTER THE CONFLICT ALERT ACTIVATED, THEY KEYED IN 16000 FT. I MADE SURE ACFT X WAS STOPPED AT 17000 FT AND TURNED HIM L TO A 260 DEG HDG FOR SEPARATION. ACFT Y, HOWEVER, KEPT CLBING THROUGH 16000 FT AND I ISSUED A SAFETY ALERT TO ACFT X. HE RPTED THE DC9 IN SIGHT AND TURNED TOOK EFFECT. SEPARATION AT CLOSEST WAS APPROX 3.9 MI AND 500 FT.

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.