Narrative:

Aircraft #1 was apprequed direct lex. I approved the route and elected to work the aircraft (in lieu of taking a pointout). I assumed the aircraft would be given to me directly from cmh approach control direct lex climbing to 10000 ft. Aircraft #1 was observed climbing through 12000 ft. I turned aircraft #2 to a 350 degree heading and stopped him at 14000 ft (aircraft #2 was climbing much slower than aircraft #1). Aircraft #1 called on frequency climbing through 13000 ft. I issued an immediate turn to 170 degrees and descent to 13000 ft. The turns were insufficient to maintain separation.

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Original NASA ASRS Text

Title: ZOB CTLR ASSUMES COORD RTE OF FLT CHANGE WILL PROVIDE SEPARATION BTWN DEPARTING SBR1 AND ENRTE DC9.

Narrative: ACFT #1 WAS APPREQUED DIRECT LEX. I APPROVED THE RTE AND ELECTED TO WORK THE ACFT (IN LIEU OF TAKING A POINTOUT). I ASSUMED THE ACFT WOULD BE GIVEN TO ME DIRECTLY FROM CMH APCH CTL DIRECT LEX CLBING TO 10000 FT. ACFT #1 WAS OBSERVED CLBING THROUGH 12000 FT. I TURNED ACFT #2 TO A 350 DEG HDG AND STOPPED HIM AT 14000 FT (ACFT #2 WAS CLBING MUCH SLOWER THAN ACFT #1). ACFT #1 CALLED ON FREQ CLBING THROUGH 13000 FT. I ISSUED AN IMMEDIATE TURN TO 170 DEGS AND DSCNT TO 13000 FT. THE TURNS WERE INSUFFICIENT TO MAINTAIN SEPARATION.

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.