ACR X HAD LTSS FROM ACR Y. SYS ERROR. 2 ACFT PENETRATION OF ADJACENT APCH CTL AIRSPACE. OP DEV.

Narrative

I WAS WORKING THE STADIUM SECTOR (N ARR SECTOR); TFC WAS EXTREMELY HVY. THE ASSOCIATE RADAR POS AND THE ZUMA SECTOR WERE COMBINED AT MY POS. I WAS EXTENDED BEYOND MY NORMAL BASE LEG TURNING POINT BECAUSE OF THE NUMBER OF HVY JETS AND THE AMOUNT OF TFC BEING PUT ON MY RWY FROM THE DOWNEY SECTOR. I HAD ASKED THE COORD (CI-2) IF I COULD TURN BASE LEG WITH ACB X COMMUTER AT 3500 MSL; NORMALLY YOU WOULD TURN BASE LEG AT 2500 FT WHEN ON SIMULTANEOUS APCHS; THE CI-2 APPROVED THE OP. I WAS TO THE POINT WHERE I WAS NO LONGER ABLE TO KEEP THE ACFT ON THE DOWNWIND IN THE CONFINES OF CLASS B AIRSPACE. I TURNED THE COMMUTER ON BASE LEG AND IMMEDIATELY NOTICED ACR Y AT HIS 12 O'CLOCK POS 1 AND 1/2 MI SAME ALT. I ISSUED A TFC ALERT AND ADVISED HIM TO DSND IMMEDIATELY TO 2500 FT. X RPTED Y INSIGHT AND I CLRED HIM FOR THE RWY 24 R ILS APCH. AS SOON AS I ISSUED THE APCH CLRNC. I OBSERVED THE DOWNEY CTLR ON THE RWY 25 L LOC AT 4000 FT. I ASKED THE CI-2 WHAT WAS GOING ON OVER AT DOWNEY AND I WAS TOLD THAT HE WAS EXTREMELY BUSY ALSO AND FORGOT TO PROTECT MY ACFT WITH ALT SEPARATION. I ESTIMATE SEPARATION BTWN THE 2 ACFT AT LESS THAN 500 FT AND 1-2 MI LATERAL SEPARATION. THE AREA MGR AND SUPVR WAS STANDING BEHIND US AT THE TIME OF THE OCCURRENCE. I HEARD THE CI-2 CTLR TELL THE AREA MGR AT ONE POINT THAT WE WERE UNABLE TO STAY WITHIN THE CONFINES OF OUR AIRSPACE BECAUSE OF THE VOLUME OF TFC AND THAT ONTARIO APCH WAS UNABLE TO GIVE US PERMISSION TO ENTER THEIR AIRSPACE. THE CI-2 WENT ON TO SAY THAT ONTARIO WOULD BE CALLING BECAUSE WE HAD PENETRATED THEIR AIRSPACE ON AT LEAST 2 DIFFERENT OCCASIONS. AN OPERATIONAL ERROR HAD OCCURRED THAT BOTH THE AREA MGR AND AREA SUPVR HAD WITNESSED AND NOTHING WAS DONE. A POSSIBLE SOLUTION TO THIS SIT IS TO STAFF THE POSITIONS DURING MODERATE OR GREATER TFC; IE; OPEN THE FEEDER SECTOR (ZUMA) AND THE ASSOCIATE HDOF POS.