Narrative:

Parking area gate xx mexico city, MMMX. Cleared to taxi from taxiway C to taxiway B to hold short runway 5L. We turned on taxiway B from taxiway C. As we taxied down, the lights (blue) ahead were out but lights to the left were on. Captain went left thinking that was the way to go. After committed I told him 'you're on a closed runway, the light's still blue for taxi.' tower came back and asked us what we were doing. We explained about the lights and he told us to get back to the right on taxiway B. We asked controller 'is there a problem for our mistake?' he said 'no problem.' mexico city airport is lit very badly and very bad sign directions. I think they need to improve this. Maybe this wouldn't have happened.

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Original NASA ASRS Text

Title: A B747-200 FREIGHTER TAXIES ONTO RWY 5 FROM TXWY B AT MMMX DUE TO A LIGHT OUTAGE ON TXWY B.

Narrative: PARKING AREA GATE XX MEXICO CITY, MMMX. CLRED TO TAXI FROM TXWY C TO TXWY B TO HOLD SHORT RWY 5L. WE TURNED ON TXWY B FROM TXWY C. AS WE TAXIED DOWN, THE LIGHTS (BLUE) AHEAD WERE OUT BUT LIGHTS TO THE L WERE ON. CAPT WENT L THINKING THAT WAS THE WAY TO GO. AFTER COMMITTED I TOLD HIM 'YOU'RE ON A CLOSED RWY, THE LIGHT'S STILL BLUE FOR TAXI.' TWR CAME BACK AND ASKED US WHAT WE WERE DOING. WE EXPLAINED ABOUT THE LIGHTS AND HE TOLD US TO GET BACK TO THE R ON TXWY B. WE ASKED CTLR 'IS THERE A PROB FOR OUR MISTAKE?' HE SAID 'NO PROB.' MEXICO CITY ARPT IS LIT VERY BADLY AND VERY BAD SIGN DIRECTIONS. I THINK THEY NEED TO IMPROVE THIS. MAYBE THIS WOULDN'T HAVE HAPPENED.

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.