Narrative:

Third aircraft involved. We were on takeoff roll, runway 15, bur and I heard us called as traffic on the roll to an aircraft transiting(?) bur control zone. Just after liftoff, and in turn per published departure, bur tower pointed out traffic to us left to right at (?) altitude. Traffic was spotted slightly above and to the right and close, but the turn and climb momentum was taking us into traffic. TCASII activated with RA to descend almost immediately with tower's traffic call. An evasive left turn was started along with compliance with RA to descend. Before the transition was completed, we climbed through the visual traffic's altitude, but TCASII RA continued to call for descent, and further increase the descent. This caused some confusion since we were now above the traffic, or so we thought! The first officer continued RA compliance and then saw the second target on the TCASII display. This display was overlapping the original target display, and in the intense moment in our flight deck, the separation altitude of this target could not be determined. The second target was not pointed out to us. Both targets were within 1/4 mi and right at the departure end of runway 15 at bur. It seems bur tower, or vny tower, or someone should have been aware of these targets/traffic and let them be farther down the road before we were cleared for takeoff. A departure window for phx flow control for us may have been a factor.

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Original NASA ASRS Text

Title: DEPARTING BUR, A320 INITIATES TCASII MANEUVER TO AVOID 2 TRANSITING VFR ACFT APPROX 1 MI AT DEP END RWY 15.

Narrative: THIRD ACFT INVOLVED. WE WERE ON TKOF ROLL, RWY 15, BUR AND I HEARD US CALLED AS TFC ON THE ROLL TO AN ACFT TRANSITING(?) BUR CTL ZONE. JUST AFTER LIFTOFF, AND IN TURN PER PUBLISHED DEP, BUR TWR POINTED OUT TFC TO US L TO R AT (?) ALT. TFC WAS SPOTTED SLIGHTLY ABOVE AND TO THE R AND CLOSE, BUT THE TURN AND CLB MOMENTUM WAS TAKING US INTO TFC. TCASII ACTIVATED WITH RA TO DSND ALMOST IMMEDIATELY WITH TWR'S TFC CALL. AN EVASIVE L TURN WAS STARTED ALONG WITH COMPLIANCE WITH RA TO DSND. BEFORE THE TRANSITION WAS COMPLETED, WE CLBED THROUGH THE VISUAL TFC'S ALT, BUT TCASII RA CONTINUED TO CALL FOR DSCNT, AND FURTHER INCREASE THE DSCNT. THIS CAUSED SOME CONFUSION SINCE WE WERE NOW ABOVE THE TFC, OR SO WE THOUGHT! THE FO CONTINUED RA COMPLIANCE AND THEN SAW THE SECOND TARGET ON THE TCASII DISPLAY. THIS DISPLAY WAS OVERLAPPING THE ORIGINAL TARGET DISPLAY, AND IN THE INTENSE MOMENT IN OUR FLT DECK, THE SEPARATION ALT OF THIS TARGET COULD NOT BE DETERMINED. THE SECOND TARGET WAS NOT POINTED OUT TO US. BOTH TARGETS WERE WITHIN 1/4 MI AND RIGHT AT THE DEP END OF RWY 15 AT BUR. IT SEEMS BUR TWR, OR VNY TWR, OR SOMEONE SHOULD HAVE BEEN AWARE OF THESE TARGETS/TFC AND LET THEM BE FARTHER DOWN THE ROAD BEFORE WE WERE CLRED FOR TKOF. A DEP WINDOW FOR PHX FLOW CTL FOR US MAY HAVE BEEN A FACTOR.

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.