Narrative:

There were 2 aircraft on V244 eastbound same area one at 5000 going to lvk and one at 7000 going to sck. There was also an aircraft nebound on V195 at 5000 going to lvk, an aircraft on the approach to lvk descending out of 4000, and an aircraft south of eca wbound at 4500 VFR going to lvk VOR an approach. While I was ensuring that the aircraft for lvk were separated I observed small aircraft X eastbound and air carrier Y sbound at 7000. I issued traffic to air carrier Y and descended small aircraft X immediately. It was one of the first WX systems of the yr in our area and there were more aircraft wanting IFR approachs to lvk than usual. I let the approach aircraft to lvk distract me from my other traffic. If there are unusual factors such as WX systems in the area that could effect the usual traffic flow be extra cautious and ask for handoff position to be opened if necessary. Callback conversation with reporter revealed the following information. The reporter stated he was a developmental controller radar certified on the approach control position he was working. He had 1 yr experience in the facility. Conflict alert had activated which brought the separation problem between small aircraft Y and air carrier X to his attention. A system error was filed. Separation was 1 mi horizontal and 0 vertical.

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Original NASA ASRS Text

Title: SMA X HAD LTSS FROM ACR Y. SYS ERROR.

Narrative: THERE WERE 2 ACFT ON V244 EBOUND SAME AREA ONE AT 5000 GOING TO LVK AND ONE AT 7000 GOING TO SCK. THERE WAS ALSO AN ACFT NEBOUND ON V195 AT 5000 GOING TO LVK, AN ACFT ON THE APCH TO LVK DSNDING OUT OF 4000, AND AN ACFT S OF ECA WBOUND AT 4500 VFR GOING TO LVK VOR AN APCH. WHILE I WAS ENSURING THAT THE ACFT FOR LVK WERE SEPARATED I OBSERVED SMA X EBOUND AND ACR Y SBOUND AT 7000. I ISSUED TFC TO ACR Y AND DSNDED SMA X IMMEDIATELY. IT WAS ONE OF THE FIRST WX SYSTEMS OF THE YR IN OUR AREA AND THERE WERE MORE ACFT WANTING IFR APCHS TO LVK THAN USUAL. I LET THE APCH ACFT TO LVK DISTRACT ME FROM MY OTHER TFC. IF THERE ARE UNUSUAL FACTORS SUCH AS WX SYSTEMS IN THE AREA THAT COULD EFFECT THE USUAL TFC FLOW BE EXTRA CAUTIOUS AND ASK FOR HDOF POS TO BE OPENED IF NECESSARY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO. THE RPTR STATED HE WAS A DEVELOPMENTAL CTLR RADAR CERTIFIED ON THE APCH CTL POS HE WAS WORKING. HE HAD 1 YR EXPERIENCE IN THE FACILITY. CONFLICT ALERT HAD ACTIVATED WHICH BROUGHT THE SEPARATION PROBLEM BTWN SMA Y AND ACR X TO HIS ATTN. A SYS ERROR WAS FILED. SEPARATION WAS 1 MI HORIZ AND 0 VERT.

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.