Narrative:

Executed a missed approach from lax runway 24R -- told to climb to 2000 ft, heading 250 degree. At 2000 ft level at approximately la shoreline, TCASII issued a 'traffic' followed immediately by a 'climb, climb immediately' RA. It showed traffic 200 ft below us. I was concerned that there was a departure off of 24L or right, so I immediately climbed to 2200 ft, where TCASII issued a 'clear of conflict.' I returned to la and landed without further incidence. After landing I was requested by ground to call la approach on the telephone. I did this and spoke with a supervisor at la TRACON. He informed me that when I climbed from 2000 ft I was in conflict with an IFR aircraft at 3000 ft within 1 mi of my aircraft. La TRACON gave the 3000 ft traffic an abrupt right turn as they didn't know how high my RA would take me. I questioned la TRACON as to what traffic my TCASII could have picked up. He said he had a departure off runway 25, but that aircraft was heading 235 degree (away from me). We were both concerned that the TCASII did not pick up the traffic it tried to climb me into. I notified my airline and they will pull and check the TCASII. However, my faith in the TCASII system is further diminished. Ps -- I have had at least 12 false RA's.

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Original NASA ASRS Text

Title: CAPT OF ACR MLG ACFT DEV FROM ASSIGNED ALT DURING MISSED APCH IN RESPONSE TO A TCASII RA.

Narrative: EXECUTED A MISSED APCH FROM LAX RWY 24R -- TOLD TO CLB TO 2000 FT, HDG 250 DEG. AT 2000 FT LEVEL AT APPROX LA SHORELINE, TCASII ISSUED A 'TFC' FOLLOWED IMMEDIATELY BY A 'CLB, CLB IMMEDIATELY' RA. IT SHOWED TFC 200 FT BELOW US. I WAS CONCERNED THAT THERE WAS A DEP OFF OF 24L OR R, SO I IMMEDIATELY CLBED TO 2200 FT, WHERE TCASII ISSUED A 'CLR OF CONFLICT.' I RETURNED TO LA AND LANDED WITHOUT FURTHER INCIDENCE. AFTER LNDG I WAS REQUESTED BY GND TO CALL LA APCH ON THE TELEPHONE. I DID THIS AND SPOKE WITH A SUPVR AT LA TRACON. HE INFORMED ME THAT WHEN I CLBED FROM 2000 FT I WAS IN CONFLICT WITH AN IFR ACFT AT 3000 FT WITHIN 1 MI OF MY ACFT. LA TRACON GAVE THE 3000 FT TFC AN ABRUPT R TURN AS THEY DIDN'T KNOW HOW HIGH MY RA WOULD TAKE ME. I QUESTIONED LA TRACON AS TO WHAT TFC MY TCASII COULD HAVE PICKED UP. HE SAID HE HAD A DEP OFF RWY 25, BUT THAT ACFT WAS HDG 235 DEG (AWAY FROM ME). WE WERE BOTH CONCERNED THAT THE TCASII DID NOT PICK UP THE TFC IT TRIED TO CLB ME INTO. I NOTIFIED MY AIRLINE AND THEY WILL PULL AND CHK THE TCASII. HOWEVER, MY FAITH IN THE TCASII SYS IS FURTHER DIMINISHED. PS -- I HAVE HAD AT LEAST 12 FALSE RA'S.

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.