Narrative:

On climb-out from psp passing 8;000 ft MSL; ATC advised us of a small aircraft at 10;500 ft at our 1 o'clock position. While climbing at about 4;000 ft per minute going through 9;000 ft; ATC advised us of the traffic again and suggested we level off at 9;500 ft if traffic not in sight. We immediately saw the traffic and simultaneously got a 'descend' RA which we immediately responded to. We overshot 9;500 ft slightly (about 200 ft) as we responded to the RA but had the traffic in sight. The RA lasted for about 10 seconds. When clear of the conflict we continued our climb to our assigned altitude of 13;000 ft as the other aircraft passed well behind us (approximately 1/2 mile). The TCAS system worked as designed and the flight continued uneventfully.ATC [was] a little late with the traffic callout. [The] crew [was] unable to make visual contact earlier. The simultaneous suggestion (it was only a suggestion) that we level off at 9;500 ft from ATC just as we made visual contact with the traffic and the activation of the 'descend' RA all occurred at the same time. The TCAS system worked as designed and we responded to it appropriately.

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Original NASA ASRS Text

Title: B737 Captain passing 8;000 FT during climb is advised of VFR traffic at one o'clock at 10;500 FT. ATC suggests level off at the same time TCAS RA commands a descent and visual acquisition is made. A level off at 9;500 FT is made before resuming climb to 13;000 FT.

Narrative: On climb-out from PSP passing 8;000 FT MSL; ATC advised us of a small aircraft at 10;500 FT at our 1 o'clock position. While climbing at about 4;000 FT per minute going through 9;000 FT; ATC advised us of the traffic again and suggested we level off at 9;500 FT if traffic not in sight. We immediately saw the traffic and simultaneously got a 'descend' RA which we immediately responded to. We overshot 9;500 FT slightly (about 200 FT) as we responded to the RA but had the traffic in sight. The RA lasted for about 10 seconds. When clear of the conflict we continued our climb to our assigned altitude of 13;000 FT as the other aircraft passed well behind us (approximately 1/2 mile). The TCAS system worked as designed and the flight continued uneventfully.ATC [was] a little late with the traffic callout. [The] crew [was] unable to make visual contact earlier. The simultaneous suggestion (it was only a suggestion) that we level off at 9;500 FT from ATC just as we made visual contact with the traffic and the activation of the 'descend' RA all occurred at the same time. The TCAS system worked as designed and we responded to it appropriately.

Data retrieved from NASA's ASRS site as of April 2012 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.