Narrative:

After briefing, I asked an F18, if able, to accept FL350 for traffic. Reply affirmative. Instructed the F18 to climb. I turned air carrier X 15 degrees right. Asked F18 to expedite climb and report level. Told F18 he needed to be level in less than 2 mins. F18 reported out of FL342 for FL350 and reported level at FL350. I believed that the climb rate of the F18 would insure separation of aircraft in climb.

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Original NASA ASRS Text

Title: ZME CTLR EXPERIENCED OPERROR AT FL330 BY MISJUDGING ALT CLB RATE BTWN A MIL F18 AND AN MD80.

Narrative: AFTER BRIEFING, I ASKED AN F18, IF ABLE, TO ACCEPT FL350 FOR TFC. REPLY AFFIRMATIVE. INSTRUCTED THE F18 TO CLB. I TURNED ACR X 15 DEGS R. ASKED F18 TO EXPEDITE CLB AND RPT LEVEL. TOLD F18 HE NEEDED TO BE LEVEL IN LESS THAN 2 MINS. F18 RPTED OUT OF FL342 FOR FL350 AND RPTED LEVEL AT FL350. I BELIEVED THAT THE CLB RATE OF THE F18 WOULD INSURE SEPARATION OF ACFT IN CLB.

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.