Narrative:

On the climb out, the controller asked us to expedite our climb. At this point, I was climbing through 11000-12000' at a climb rate of 2000 FPM. I increased my rate of climb to 3000 FPM immediately, and we were given a frequency change to ZLA. My copilot acknowledged and made the frequency change. The frequency was busy when we switched over. Before we could check in the controller came up and told us we had a C/a and to level off at 15000'. I was going through 15300' at a rate of about 3300 FPM at this point. I knocked off the autoplt and was trying to get the aircraft back to 15000', while the copilot was acknowledging the clearance and informing the controller we were already at 15300'. The controller upon hearing this cleared us to climb to FL230. Shortly after this we saw the other aircraft, an small transport, who was at least 1000' below us and about 1/2 mi in front of us, crossing from right to left. At no time were we informed by the first controller of any traffic, but the request to expedite the climb told us there was someone out there that we needed to be aware of. I was about to ask for traffic information when we were given the frequency change. Visibility at the time was very good, especially for south cal. I believe this problem was caused by a lack of coordination between controllers and could have been avoided if the first controller had given us a vector or a level off at a lower altitude. The reason for the expedited climb as to the other aircraft's relative position and altitude would have alerted us to the problem sooner. We were keeping a very alert traffic watch, but this information would have helped.

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Original NASA ASRS Text

Title: CONFLICT BETWEEN ACR-MLG AND SMT DURING MLG CLIMB.

Narrative: ON THE CLBOUT, THE CTLR ASKED US TO EXPEDITE OUR CLB. AT THIS POINT, I WAS CLBING THROUGH 11000-12000' AT A CLB RATE OF 2000 FPM. I INCREASED MY RATE OF CLB TO 3000 FPM IMMEDIATELY, AND WE WERE GIVEN A FREQ CHANGE TO ZLA. MY COPLT ACKNOWLEDGED AND MADE THE FREQ CHANGE. THE FREQ WAS BUSY WHEN WE SWITCHED OVER. BEFORE WE COULD CHK IN THE CTLR CAME UP AND TOLD US WE HAD A C/A AND TO LEVEL OFF AT 15000'. I WAS GOING THROUGH 15300' AT A RATE OF ABOUT 3300 FPM AT THIS POINT. I KNOCKED OFF THE AUTOPLT AND WAS TRYING TO GET THE ACFT BACK TO 15000', WHILE THE COPLT WAS ACKNOWLEDGING THE CLRNC AND INFORMING THE CTLR WE WERE ALREADY AT 15300'. THE CTLR UPON HEARING THIS CLRED US TO CLB TO FL230. SHORTLY AFTER THIS WE SAW THE OTHER ACFT, AN SMT, WHO WAS AT LEAST 1000' BELOW US AND ABOUT 1/2 MI IN FRONT OF US, XING FROM RIGHT TO LEFT. AT NO TIME WERE WE INFORMED BY THE FIRST CTLR OF ANY TFC, BUT THE REQUEST TO EXPEDITE THE CLB TOLD US THERE WAS SOMEONE OUT THERE THAT WE NEEDED TO BE AWARE OF. I WAS ABOUT TO ASK FOR TFC INFO WHEN WE WERE GIVEN THE FREQ CHANGE. VISIBILITY AT THE TIME WAS VERY GOOD, ESPECIALLY FOR S CAL. I BELIEVE THIS PROB WAS CAUSED BY A LACK OF COORD BTWN CTLRS AND COULD HAVE BEEN AVOIDED IF THE FIRST CTLR HAD GIVEN US A VECTOR OR A LEVEL OFF AT A LOWER ALT. THE REASON FOR THE EXPEDITED CLB AS TO THE OTHER ACFT'S RELATIVE POS AND ALT WOULD HAVE ALERTED US TO THE PROB SOONER. WE WERE KEEPING A VERY ALERT TFC WATCH, BUT THIS INFO WOULD HAVE HELPED.

Data retrieved from NASA's ASRS site as of August 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.