PLTDEV.

Narrative

FLT WAS FROM MSP TO LAX. WE WERE CLRED TO 14000 FT DIRECT TO BREMER. ZLA SAID TURN 275 DEGS AND STOP DSCNT AT 15000 FT; THERE IS VFR TFC AT 12 O'CLOCK 15000 FT. WE GOT A TCASII RA 'DSND NOW; DSND NOW.' WE DSNDED TO 14000 FT AND SAW THE LIGHT ACFT PASS OFF THE L WING. ZLA SAID THE VFR TFC WAS ALSO IN A DSCNT. SUPPLEMENTAL INFO FROM ACN 289984: WE LOOKED FOR TFC AND COULD NOT SIGHT HIM VISUALLY. WE CHKED THE TCASII AND SAW THE TARGET AT 12 O'CLOCK 4-5 MI AT APPROX SAME ALT (YELLOW). CTR ADVISED TURN FURTHER R TO A 290 DEG OR 295 DEG HDG WHEN WE GOT A RA 'DSND NOW; DSND NOW;' I CLRED THE AREA AND EXECUTED A RESOLUTION. FO ADVISED CTR WE WERE COMPLYING WITH RESOLUTION AND THAT A DSCNT WAS COMMENCED. AFTER TCASII ADVISED 'MONITOR VERT SPD;' CLR OF CONFLICT; I LEVELED OFF AT 14000 FT AND CTR WAS ADVISED. CTR FELT WITH VECTORS AND ALT RESTR WE WOULD HAVE CLRED TFC; BUT NOT HAVING HIM VISUALLY. I FELT COMPELLED TO FOLLOW THE RA. THE FO AND SO FINALLY SIGHTED TFC DURING EVASIVE ACTION AND STATED WE CAME PRETTY CLOSE.