Narrative:

Performed actual autoland CAT IIIB approach runway 25L lax. RVR touchdown 1000 ft, mid 1000 ft, rollout 800 ft. During rollout, ATC directed us to make right turn off of taxiway M. That was our plan as we understood taxiway K was closed. During deceleration, we saw the green turnoff lights (taxi) assuming it was taxiway M because we thought we passed taxiway K, we made the right turn. By the time we were 1/2 way onto the taxiway, we realized it was indeed taxiway K. Tower told us we were on taxiway K and had follow-me truck clear the taxiway so that we could proceed to the gate. In reality, taxiway K was not closed (it was lit for taxi and there were no barricades or obstructions). It was so foggy that we assumed taxiway K was taxiway M. There were no problems with tower. No delays -- just a misunderstanding on the turnoff. If taxiway K was indeed closed, the turnoff taxi (green) lights should have been turned off with a form of lighted barricade to enhance the fact that it was closed. We, in the fog decelerating on rollout, mistook the well lit taxiway for taxiway M. Even the signage was hard to see.

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Original NASA ASRS Text

Title: AN ACR FLT MAKES A CAT IIIB ILS APCH INTO LAX, RWY 25L AND TURNS ONTO A CLOSED TXWY K AT LAX CA.

Narrative: PERFORMED ACTUAL AUTOLAND CAT IIIB APCH RWY 25L LAX. RVR TOUCHDOWN 1000 FT, MID 1000 FT, ROLLOUT 800 FT. DURING ROLLOUT, ATC DIRECTED US TO MAKE R TURN OFF OF TXWY M. THAT WAS OUR PLAN AS WE UNDERSTOOD TXWY K WAS CLOSED. DURING DECELERATION, WE SAW THE GREEN TURNOFF LIGHTS (TAXI) ASSUMING IT WAS TXWY M BECAUSE WE THOUGHT WE PASSED TXWY K, WE MADE THE R TURN. BY THE TIME WE WERE 1/2 WAY ONTO THE TXWY, WE REALIZED IT WAS INDEED TXWY K. TWR TOLD US WE WERE ON TXWY K AND HAD FOLLOW-ME TRUCK CLR THE TXWY SO THAT WE COULD PROCEED TO THE GATE. IN REALITY, TXWY K WAS NOT CLOSED (IT WAS LIT FOR TAXI AND THERE WERE NO BARRICADES OR OBSTRUCTIONS). IT WAS SO FOGGY THAT WE ASSUMED TXWY K WAS TXWY M. THERE WERE NO PROBS WITH TWR. NO DELAYS -- JUST A MISUNDERSTANDING ON THE TURNOFF. IF TXWY K WAS INDEED CLOSED, THE TURNOFF TAXI (GREEN) LIGHTS SHOULD HAVE BEEN TURNED OFF WITH A FORM OF LIGHTED BARRICADE TO ENHANCE THE FACT THAT IT WAS CLOSED. WE, IN THE FOG DECELERATING ON ROLLOUT, MISTOOK THE WELL LIT TXWY FOR TXWY M. EVEN THE SIGNAGE WAS HARD TO SEE.

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.