ON SHORT FINAL AT LAX FOR RWY 24L; LCL CTLR ISSUES XING CLRNC TO B737 CAUSING AN 3120 TO EXECUTE A GAR.

Narrative

MY ACFT WAS ON A VISUAL APCH TO RWY 24L AT LAX. WE WERE STAGGERED BEHIND ANOTHER COMPANY ACFT ON APCH TO RWY 24R. AS WE DSNDED THROUGH APPROX 1000 FT MSL ON FINAL; TWR CROSSED AN ACFT THAT HAD LANDED ON RWY 24R ACROSS RWY 24L. THIS WAS ACCOMPLISHED WITHOUT INCIDENT AND WAS NO FACTOR TO US AS WE WERE STILL AT 2 MI FINAL. AS WE DSNDED THROUGH 5600 FT MSL ON 3/4 MI FINAL; TWR INSTRUCTED ACR B737 HOLDING SHORT FOR TKOF TO CROSS RWY 24L AND HOLD SHORT RWY 24R. I WAS SHOCKED TO HEAR THIS INSTRUCTION AS WE WERE ON VERY SHORT FINAL BUT WERE UNABLE TO MAKE ANY CALLS DUE TO RADIO CONGESTION. THE THOUGHT THAT I HAD HEARD IN ERROR CROSSED MY MIND SO I WATCHED THE B737 CLOSELY AND DECIDED THAT IF IN FACT THEY DID CROSS THE HOLD LINE AND INCUR THE RWY I WAS APCHING; I WOULD GO AROUND. THE ACR ACFT APPARENTLY SAW US AND APPLIED A GREAT DEAL OF PWR TO EXPEDITE THEIR XING. IN THEIR POS; I WOULD HAVE REFUSED TO MOVE; HELD SHORT; AND QUESTIONED THE CTLR AS THE INSTRUCTION WAS OBVIOUSLY A MISTAKE. AS THEY PASSED THE HOLD SHORT LINE; I APPLIED PWR AND INITIATED THE GAR. BEFORE THE NOSE OBSCURED THE RWY; I NOTICED THAT THE B737 WAS RACING ACROSS THE RWY; APPARENTLY IN THE HOPE THAT I WOULD ACCEPT THEIR XING AND CONTINUE MY LNDG. I; HOWEVER; WAS NOT GOING TO PLAY THAT GAME. DUE TO THE TWR'S ALMOST CONTINUOUS INSTRUCTIONS TO VARIOUS ACFT; NEITHER I NOR MY FO WERE ABLE TO CALL OUR GAR. THE TWR CALLED US AND INSTRUCTED US TO CLB TO 2000 FT AND MAINTAIN RWY HDG. WE WERE VECTORED BACK FOR APCH AND LANDED UNEVENTFULLY. AS AN ACR PLT WHO HAS OPERATED OUT OF LAX FOR 2 YRS; I KNOW FULL WELL HOW BUSY THAT ARPT IS AND I APPRECIATE THE EFFORT THE CTLRS PUT INTO EXPEDITING TFC FLOW. HOWEVER; THIS WAS WELL OVER THE LINE. TO CROSS AN ACFT THAT IS STATIC WITH TFC APPROX 20 SECONDS FROM TOUCHDOWN IS UNCONSCIONABLE. IF THE CTLR HAD JUST WAITED 20 SECONDS FOR ME TO LAND; THEN CROSSED THE B737; THERE WOULD HAVE BEEN NO NEED FOR PAPERWORK AND NO RISK OF DISASTER.