Narrative:

During initial contact socal cleared us direct to vydda for a localizer 27 approach in VMC conditions. At 6;000 ft ATC reported traffic above us and gave us 5;000 ft at the same time the traffic appeared on our TCAS. We then received a TCAS RA to descend followed by a climb RA. We notified ATC and cleared the conflict. We landed with no further incident. After the conflict ATC apologized and informed us the traffic had been instructed to maintain an altitude above us.

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Original NASA ASRS Text

Title: An A319 flight in descent with SOCAL Approach responded to a TCAS RA generated by another aircraft who failed to comply with its clearance to maintain a higher altitude.

Narrative: During initial contact SoCal cleared us direct to VYDDA for a LOC 27 approach in VMC conditions. At 6;000 FT ATC reported traffic above us and gave us 5;000 FT at the same time the traffic appeared on our TCAS. We then received a TCAS RA to descend followed by a climb RA. We notified ATC and cleared the conflict. We landed with no further incident. After the conflict ATC apologized and informed us the traffic had been instructed to maintain an altitude above us.

Data retrieved from NASA's ASRS site 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.