LGT FLC ON DSCNT INTO LAX HAS TCASII RA INVOLVING AN LTT ON PARALLEL APCH.

Narrative

DSNDING THROUGH 7000 FT ON THE CIVET ARR AT LAX FOR RWY 25L WE WERE ADVISED BY SOCAL APCH OF A JETSTREAM IN OUR 12 O'CLOCK DSNDING TO 4000 FT FOR THE PARALLEL RWY 25R. WE DID NOT HAVE HIM IN SIGHT NOR DID WE CALL HIM IN SIGHT; AND WE DID NOT HEAR THE JETSTREAM CALL US IN SIGHT. WE COULD SEE THE TCASII TARGET TURN TO YELLOW IN FRONT OF US (LESS THAN 1/2 MI) AND THE ALT SEPARATION DECREASING TO 300 FT AS WE DSNDED TO 4000 FT MSL. (WE STILL DID NOT HAVE THE JETSTREAM IN SIGHT NOR DID WE CALL HIM YET IN SIGHT). WE RECEIVED A TCASII RA AT THAT TIME; INSTRUCTING US TO 'CLB.' WE RESPONDED; DISCONNECTING THE FMS; AND CLBED APPROX 400-500 FT; TELLING SOCAL APCH WE WERE DOING SO. AFTER LEVELING OFF; WE THEN PICKED UP A 'VISUAL' ON THE JETSTREAM AT OUR 3 O'CLOCK LOW; ABOUT 1000 FT HORIZLY AND 300-400 FT BELOW US. WE THEN CALLED THE VISUAL AND BOTH ACFT CONTINUED THEIR RESPECTIVE APCHS AND LNDGS TO THE PARALLEL RWYS; 25L AND 25R. I CALLED SOCAL APCH THE NEXT DAY AND EXPRESSED OUR CONCERN FOR THEIR CLRING 2 ACFT FOR PARALLEL APCHS; WITHOUT EITHER OF THE ACFT HAVING OR CALLING A VISUAL ON THE OTHER ACFT. THE SHIFT SUPVR (I DID NOT GET HIS NAME) DID NOT SEEM TOO CONCERNED ABOUT THE WHOLE SIT; MAINTAINING THAT THE RADAR MAN WATCHING US 'HAD THINGS UNDER CTL.' WE ARE WORRIED THAT THIS LAX ATTITUDE COULD COMPROMISE SAFETY IN THIS AND OTHER SIMILAR SITS. I ASKED HIM TO BRING UP THE SIT AT THEIR NEXT CTLR MEETING; AND EMPHASIZE THE FACT THAT ONE OR THE OTHER OF 2 ACFT ON SIMULTANEOUS APCHS; WHETHER VFR OR NOT; TO CLOSE RWYS SUCH AS LAX RWYS 25L AND 25R; SHOULD HAVE A VISUAL ON THE OTHER; PRIOR TO CLRING EITHER ACFT FOR SUCH AN APCH. ON THE WHOLE; WE SEEMED MORE CONCERNED ABOUT SAFETY IN THIS SIT THAN DID SOCAL APCH. THUS; THE NASA RPT! WE ARE NOT POINTING FINGERS AT THEM; WE ONLY WANT THE AIRSPACE TO BE AS SAFE AS POSSIBLE.