Narrative:

#1 DC9 level flight 11000 ft. #2 DC9 climbing out, receives TCASII RA to descend. #1 TCASII RA to climb. But later, said he saw traffic and disregarded climb RA. This was all unknown to me. Conflict alert goes off, I turn aircraft #1 who I was working to miss aircraft #2 who departure control was working.

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Original NASA ASRS Text

Title: TRACON APCH CTLR REACTS TO 2 PLT TCASII RA'S, INITIATING TURNS. ONE PLT CHOOSES NOT TO REACT TO THE TCASII RA. CONFLICT ALERT ACTIVATES FROM DUAL PLT ACTIONS.

Narrative: #1 DC9 LEVEL FLT 11000 FT. #2 DC9 CLBING OUT, RECEIVES TCASII RA TO DSND. #1 TCASII RA TO CLB. BUT LATER, SAID HE SAW TFC AND DISREGARDED CLB RA. THIS WAS ALL UNKNOWN TO ME. CONFLICT ALERT GOES OFF, I TURN ACFT #1 WHO I WAS WORKING TO MISS ACFT #2 WHO DEP CTL WAS WORKING.

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.