Narrative:

Originally cleared to fly the seavu arrival runway 25L at lax. After beginning the arrival; approach changed our arrival to the seavu runway 24R. I had preloaded the seavu runway 24R in route 2 and upon clearance executed route 2. The initial points all matched. However; while on the arrival; I realized not all the points matched and began investigating. Almost immediately after; the aircraft turned earlier than it should have on the seavu and I realized that I had most likely inadvertently executed the wrong arrival or possibly; the FMS database was not correct. At the same exact time; approach control inquired about our arrival. I requested a vector until we could correct the discrepancy. Approach control issued a vector and altitude to descend to. Then approach issued a clearance to palac and to intercept the runway 24R ILS. We complied. Approach made no other inquiries about the event. There were no conflicts and no other action was necessary. At the same time as the events described above; my first officer and myself were evaluating a minor engine malfunction that had previously been reported and which we began experiencing immediately upon descent into lax.

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Original NASA ASRS Text

Title: A B767 FLT CREW GETS A LAST MINUTE RWY CHANGE ON THE SEAVU ARRIVAL TO LAX AND DEVIATES FROM THE CLEARED TRACK.

Narrative: ORIGINALLY CLRED TO FLY THE SEAVU ARR RWY 25L AT LAX. AFTER BEGINNING THE ARR; APCH CHANGED OUR ARR TO THE SEAVU RWY 24R. I HAD PRELOADED THE SEAVU RWY 24R IN RTE 2 AND UPON CLRNC EXECUTED RTE 2. THE INITIAL POINTS ALL MATCHED. HOWEVER; WHILE ON THE ARR; I REALIZED NOT ALL THE POINTS MATCHED AND BEGAN INVESTIGATING. ALMOST IMMEDIATELY AFTER; THE ACFT TURNED EARLIER THAN IT SHOULD HAVE ON THE SEAVU AND I REALIZED THAT I HAD MOST LIKELY INADVERTENTLY EXECUTED THE WRONG ARR OR POSSIBLY; THE FMS DATABASE WAS NOT CORRECT. AT THE SAME EXACT TIME; APCH CTL INQUIRED ABOUT OUR ARRIVAL. I REQUESTED A VECTOR UNTIL WE COULD CORRECT THE DISCREPANCY. APCH CTL ISSUED A VECTOR AND ALT TO DSND TO. THEN APCH ISSUED A CLRNC TO PALAC AND TO INTERCEPT THE RWY 24R ILS. WE COMPLIED. APCH MADE NO OTHER INQUIRIES ABOUT THE EVENT. THERE WERE NO CONFLICTS AND NO OTHER ACTION WAS NECESSARY. AT THE SAME TIME AS THE EVENTS DESCRIBED ABOVE; MY FO AND MYSELF WERE EVALUATING A MINOR ENG MALFUNCTION THAT HAD PREVIOUSLY BEEN RPTED AND WHICH WE BEGAN EXPERIENCING IMMEDIATELY UPON DSCNT INTO LAX.

Data retrieved from NASA's ASRS site as of January 2009 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.