Narrative:

The following is as best of a description I can give 4 days after the event. Flight from chicago to lax on jan/tue, we were cleared for the civet 4 profile descent into lax. Control wanted our speed kept up through-out the descent. At arnes we were told to reduce speed to 210 KTS, cleared for the runway 25 (unreadable) approach and report lima to the tower. At this point we were unsure if the landing runway was runway 25R or runway 25L a fast review of our approachs clearly showed runway 25R as having a final approach fix of lima. When I contacted tower both the captain and I thought the tower cleared us to land runway 25R, I confirmed by saying in effect 'cleared to land runway 25R.' the approach and landing was uneventful. Approximately 2 days after the landing into lax, we were informed that we had landed on the wrong runway. That in fact we were cleared to land on runway 25L not runway 25R and that both ILS runway 25L and runway 25R had a final approach of lima. Solutions: better individual attention and confirmation procedure by both pilots. Change final approach identifier, to correct any confusion that might occur in the future.

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Original NASA ASRS Text

Title: UNAUTH LNDG. WRONG RWY APCH LNDG. NIGHT OP. FO MISREAD APCH CHART REGARDING LIMMA ONLY ON RWY 25R. CLRNC LNDG.

Narrative: THE FOLLOWING IS AS BEST OF A DESCRIPTION I CAN GIVE 4 DAYS AFTER THE EVENT. FLT FROM CHICAGO TO LAX ON JAN/TUE, WE WERE CLRED FOR THE CIVET 4 PROFILE DSCNT INTO LAX. CTL WANTED OUR SPD KEPT UP THROUGH-OUT THE DSCNT. AT ARNES WE WERE TOLD TO REDUCE SPD TO 210 KTS, CLRED FOR THE RWY 25 (UNREADABLE) APCH AND RPT LIMA TO THE TWR. AT THIS POINT WE WERE UNSURE IF THE LNDG RWY WAS RWY 25R OR RWY 25L A FAST REVIEW OF OUR APCHS CLEARLY SHOWED RWY 25R AS HAVING A FINAL APCH FIX OF LIMA. WHEN I CONTACTED TWR BOTH THE CAPT AND I THOUGHT THE TWR CLRED US TO LAND RWY 25R, I CONFIRMED BY SAYING IN EFFECT 'CLRED TO LAND RWY 25R.' THE APCH AND LNDG WAS UNEVENTFUL. APPROX 2 DAYS AFTER THE LNDG INTO LAX, WE WERE INFORMED THAT WE HAD LANDED ON THE WRONG RWY. THAT IN FACT WE WERE CLRED TO LAND ON RWY 25L NOT RWY 25R AND THAT BOTH ILS RWY 25L AND RWY 25R HAD A FINAL APCH OF LIMA. SOLUTIONS: BETTER INDIVIDUAL ATTN AND CONFIRMATION PROC BY BOTH PLTS. CHANGE FINAL APCH IDENTIFIER, TO CORRECT ANY CONFUSION THAT MIGHT OCCUR IN THE FUTURE.

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.