Narrative:

Our clearance limit as given by clearance delivery on the ground was 7000'. We were given the prado 2 departure and it states to cross the 'arnee' intersection at or below 9000'. It was a sunny sunday afternoon in the los angeles area and I had briefed my fellow crew members to be extra alert for light aircraft during our climb out. Our TCAS system was in use. We encountered approximately 15 aircraft flying in various directions at various altitudes. Some were pointed out by departure control and some were not. This was all within a 10 mi area. We received approximately 5 consecutive traffic alerts on the TCAS. We were concentrating our efforts on the traffic and trying to avoid a midair and with the TCAS system going off, that I let the aircraft climb through our 7000' clearance limit to 7600'. We immediately descended back to 7000'. The climb was very distracting especially with the TCAS system going off. There were no comments from ATC. All three crew members have filed NASA reports and the company was notified by me upon my return to dfw.

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Original NASA ASRS Text

Title: ACR LGT ALT DEVIATION OVERSHOT DURING CLIMB OUT FROM ONT. FLT CREW CLAIMS TCAS DISTR.

Narrative: OUR CLRNC LIMIT AS GIVEN BY CLRNC DELIVERY ON THE GND WAS 7000'. WE WERE GIVEN THE PRADO 2 DEP AND IT STATES TO CROSS THE 'ARNEE' INTXN AT OR BELOW 9000'. IT WAS A SUNNY SUNDAY AFTERNOON IN THE LOS ANGELES AREA AND I HAD BRIEFED MY FELLOW CREW MEMBERS TO BE EXTRA ALERT FOR LIGHT ACFT DURING OUR CLBOUT. OUR TCAS SYS WAS IN USE. WE ENCOUNTERED APPROX 15 ACFT FLYING IN VARIOUS DIRECTIONS AT VARIOUS ALTS. SOME WERE POINTED OUT BY DEP CTL AND SOME WERE NOT. THIS WAS ALL WITHIN A 10 MI AREA. WE RECEIVED APPROX 5 CONSECUTIVE TFC ALERTS ON THE TCAS. WE WERE CONCENTRATING OUR EFFORTS ON THE TFC AND TRYING TO AVOID A MIDAIR AND WITH THE TCAS SYS GOING OFF, THAT I LET THE ACFT CLB THROUGH OUR 7000' CLRNC LIMIT TO 7600'. WE IMMEDIATELY DSNDED BACK TO 7000'. THE CLB WAS VERY DISTRACTING ESPECIALLY WITH THE TCAS SYS GOING OFF. THERE WERE NO COMMENTS FROM ATC. ALL THREE CREW MEMBERS HAVE FILED NASA RPTS AND THE COMPANY WAS NOTIFIED BY ME UPON MY RETURN TO DFW.

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.