Narrative:

B738 was en route at FL250. B737 Q/a departed den. I took the handoff climbing to FL230 and climbed the aircraft to FL260. Separation was lost.

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Original NASA ASRS Text

Title: ZDV ARTCC RADAR CTLR CLBS A B737 THROUGH AN OCCUPIED ALT RESULTING IN A LOSS OF SEPARATION.

Narrative: B738 WAS ENRTE AT FL250. B737 Q/A DEPARTED DEN. I TOOK THE HDOF CLBING TO FL230 AND CLBED THE ACFT TO FL260. SEPARATION WAS LOST.

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.