Narrative:

Needed to have aircraft descend. Thought there was separation with en route aircraft. Turns were issued; but separation was lost.

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Original NASA ASRS Text

Title: ZOB CTLR EXPERIENCED OPERROR AT FL310 WITH DSND AND ENRTE ACFT.

Narrative: NEEDED TO HAVE ACFT DSND. THOUGHT THERE WAS SEPARATION WITH ENRTE ACFT. TURNS WERE ISSUED; BUT SEPARATION WAS LOST.

Data retrieved from NASA's ASRS site as of January 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.