Narrative:

ILS lax runway 25R side-step runway 25L. Tower advised us of potential no-contact traffic off our right. At 600 ft on final approach after side-stepping to runway 25L, we observed a twin beech passing right to left slightly above us. No evasive action was required since, by the time we saw the traffic, the event was over. Traffic was later determined to be beech queen air which was flying an unauthorized approach to lax, then breaking off and continuing to lgb.

Google
 

Original NASA ASRS Text

Title: POTENTIAL CONFLICT IN CLASS B AIRSPACE BTWN FREIGHTER ON A SIDE-STEP MANEUVER AND AN UNAUTH, NORAC BE65 IN PROX OF APCH RTE. NIGHT OP.

Narrative: ILS LAX RWY 25R SIDE-STEP RWY 25L. TWR ADVISED US OF POTENTIAL NO-CONTACT TFC OFF OUR R. AT 600 FT ON FINAL APCH AFTER SIDE-STEPPING TO RWY 25L, WE OBSERVED A TWIN BEECH PASSING R TO L SLIGHTLY ABOVE US. NO EVASIVE ACTION WAS REQUIRED SINCE, BY THE TIME WE SAW THE TFC, THE EVENT WAS OVER. TFC WAS LATER DETERMINED TO BE BEECH QUEEN AIR WHICH WAS FLYING AN UNAUTH APCH TO LAX, THEN BREAKING OFF AND CONTINUING TO LGB.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.