Narrative:

Approximately XA52Z, clover control called with a pointout. The communication was somewhat garbled, so I confirmed that the aircraft being pointed out was aircraft #2 (4 F16). In my mind the pointout was to be at FL200. The reality was the pointout was at FL230. After approving the pointout, I entered a temporary altitude of FL200 in the data block. Aircraft #1 checked on at FL330. I gave aircraft #1 a descent clearance to FL270 for traffic. After clearing the traffic at FL260, I issued descent to FL210 to clear the pointed out traffic. Aircraft #1 stated that he was responding to TCASII. Just a few seconds later, aircraft #1 reported at FL250. I called clover control to confirm the altitude that the pointed out traffic was at FL200. Clover responded FL230. By that time the aircraft were laterally separated, so I issued a descent to 17000 ft then over to approach with aircraft #1. I didn't inform the supervisor when it happened because I did not remember that it was mandatory to report it. I did not lose separation.

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Original NASA ASRS Text

Title: CTLR COPIED WRONG ALT ON ACFT #2 (4 F-16). RPTR ISSUED CLRNC TO ACFT #1 TO DSND THROUGH ACFT #2'S ALT. ACFT #1 HAD A TCASII RA, STOPPED DSCNT ABOVE ACFT #2. NO SEPARATION LOST.

Narrative: APPROX XA52Z, CLOVER CTL CALLED WITH A POINTOUT. THE COM WAS SOMEWHAT GARBLED, SO I CONFIRMED THAT THE ACFT BEING POINTED OUT WAS ACFT #2 (4 F16). IN MY MIND THE POINTOUT WAS TO BE AT FL200. THE REALITY WAS THE POINTOUT WAS AT FL230. AFTER APPROVING THE POINTOUT, I ENTERED A TEMPORARY ALT OF FL200 IN THE DATA BLOCK. ACFT #1 CHKED ON AT FL330. I GAVE ACFT #1 A DSCNT CLRNC TO FL270 FOR TFC. AFTER CLRING THE TFC AT FL260, I ISSUED DSCNT TO FL210 TO CLR THE POINTED OUT TFC. ACFT #1 STATED THAT HE WAS RESPONDING TO TCASII. JUST A FEW SECONDS LATER, ACFT #1 RPTED AT FL250. I CALLED CLOVER CTL TO CONFIRM THE ALT THAT THE POINTED OUT TFC WAS AT FL200. CLOVER RESPONDED FL230. BY THAT TIME THE ACFT WERE LATERALLY SEPARATED, SO I ISSUED A DSCNT TO 17000 FT THEN OVER TO APCH WITH ACFT #1. I DIDN'T INFORM THE SUPVR WHEN IT HAPPENED BECAUSE I DID NOT REMEMBER THAT IT WAS MANDATORY TO RPT IT. I DID NOT LOSE 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.