Narrative:

The air traffic controller asked if we had traffic in sight. The first officer (PNF) said yes. The controller immediately cleared us to climb through the altitude that the traffic was at and maintain visual separation. I did not see the traffic and did not immediately begin to climb. Eventually I saw the traffic that the first officer was looking at. I was not certain he was looking at the right airplane at this point but I began to climb anyway knowing the controller wanted us to leave our altitude. I then saw another aircraft and stopped climbing. Several seconds passed by and the TCASII alert sounded telling me to descend which I did to avoid traffic. It was established that there were 2 air carrier B737 airplanes moving left to right in our window and we initially were looking at the wrong airplane. The PNF should not accept visual separation until the PF has the traffic in sight.

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Original NASA ASRS Text

Title: A JET CHARTER FLC HAS A POTENTIAL CONFLICT WITH A B737 DURING A DELAYED CLB WITH VISUAL CLRNC 30 MI S OF JAX, FL.

Narrative: THE AIR TFC CTLR ASKED IF WE HAD TFC IN SIGHT. THE FO (PNF) SAID YES. THE CTLR IMMEDIATELY CLRED US TO CLB THROUGH THE ALT THAT THE TFC WAS AT AND MAINTAIN VISUAL SEPARATION. I DID NOT SEE THE TFC AND DID NOT IMMEDIATELY BEGIN TO CLB. EVENTUALLY I SAW THE TFC THAT THE FO WAS LOOKING AT. I WAS NOT CERTAIN HE WAS LOOKING AT THE RIGHT AIRPLANE AT THIS POINT BUT I BEGAN TO CLB ANYWAY KNOWING THE CTLR WANTED US TO LEAVE OUR ALT. I THEN SAW ANOTHER ACFT AND STOPPED CLBING. SEVERAL SECONDS PASSED BY AND THE TCASII ALERT SOUNDED TELLING ME TO DSND WHICH I DID TO AVOID TFC. IT WAS ESTABLISHED THAT THERE WERE 2 ACR B737 AIRPLANES MOVING L TO R IN OUR WINDOW AND WE INITIALLY WERE LOOKING AT THE WRONG AIRPLANE. THE PNF SHOULD NOT ACCEPT VISUAL SEPARATION UNTIL THE PF HAS THE TFC IN SIGHT.

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.