FLC EXPERIENCES TCASII RA NEAR OM AT LOS ANGELES AS CONFUSION OCCURS BTWN TFC CTLRS AND PLTS.

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IN SUM: LAX WAS BUSY; NIGHTTIME. L1011 ON N DOWNWIND WAS ASKED IF HE HAD TFC AT 10 O'CLOCK IN SIGHT. L1011 SAID HE DID. SOCAL APCH CTLR SAID CLRED FOR THE VISUAL RWY 24L; CROSS BEHIND THAT TFC WHICH IS FOR RWY 24R. L1011 COMPLIED. HOWEVER; IT APPEARS THE L1011 WAS SEEING THE B737 AND DID NOT SEE THE RPTR BEHIND IN THE JETSTREAM. THEREFORE; THE L1011 CROSSED TOO CLOSE IN FRONT OF THE JETSTREAM HE WAS SUPPOSED TO CROSS BEHIND. THE L1011 DID NOT SEE THE JETSTREAM. THE L1011 ENDED UP GOING AROUND. THE JETSTREAM THE L1011 WAS SUPPOSED TO PASS BEHIND WHICH WAS THE RPTR MADE AN EVASIVE MANEUVER IN RESPONSE TO HIS TCASII RA AND VISUAL SIGHTING. THE TWR DID NOT TELL THE L1011 TO GAR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED HE WAS FLYING A JETSTREAM 3100. THE ACFT THAT WAS TURNING IN FROM THE N THAT PASSED FRIGHTFULLY CLOSE IN FRONT WAS AN L1011. AND; THE ACFT AHEAD OF THE RPTR FOR RWY 24R WAS A B737-300. THE TWR DID NOT TELL THE L1011 TO GAR BUT DID CLR THE RPTR TO TURN OFF AT AN INTXN ASSOCIATED WITH THE B737 AHEAD AND CLRED TO CROSS RWY 24L. THE RPTR AT THIS TIME WAS ABOUT 3 MI OUT ON FINAL. THE TWR SEEMED SURPRISED WHEN THE RPTR RESPONDED THEY WERE STILL 3 MI OUT. THE RPTR WAS CONCERNED THAT THEIR TCASII AURAL WARNING IS INAUDIBLE. HOWEVER; THE RPTR DID SAY THE COCKPIT NOISE IS SUCH IN THEIR JETSTREAM 3100 THAT MANY PLTS WEAR EARPLUGS ALONG WITH THEIR HEADSETS AND TURN UP THEIR RADIO VOLUMES TO COMPENSATE FOR THE EARPLUGS. OF COURSE; THE AURAL TCASII WARNING IS NOT CTLABLE IN THE COCKPIT. THE RPTR STATED THEIR JETSTREAM 3100 COCKPIT NOISE SEEMS LOUDER THAN OTHER JETSTREAM MODELS. THE ANALYST MENTIONED TO THE RPTR THERE HAVE BEEN COMPLAINTS FROM OTHER RPTRS OPERATING OTHER ACFT THAT THE TCASII WARNING IS SO LOUD THEY CANNOT COMMUNICATE OVER THE RADIO.