Narrative:

Visibility restr due to fog. Early morning departure. Off the gate ground issued clearance to taxi to 18L via B, J taxiways. We looked at chart and both of us agreed the taxiway in front of us was B it angled as chart indicated but was not marked. After entering taxiway, we saw B further to the west, we were actually on A2. I went heads down to review chart, when I looked up I realized captain was about to hit taxiway lights. He had lined up on yellow taxi line but the taxiway lights had been reinstalled, just outside of this line and a new yellow line painted further in. So taxi concrete width appeared normal but taxiway actually made smaller by shifting lights and taxi line. Old taxi line was not blocked out adequately. Smooth transition was made so we assumed that no damage to aircraft or taxi light had occurred. We inspected aircraft at destination. And did not see any indication of hitting any lights. Ground issued instructions to stop at T8 and contact tower. As we approached T8 we advised we needed full length of runway and tower okayed back taxi and takeoff but captain proceeded to 'T' and entered runway at full length position. Contributing factors: early morning (dawn), no or poor taxiway markings, construction in area, airport NOTAMS did not indicate anything unusual, old taxi line not removed.

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Original NASA ASRS Text

Title: ACR TAXIES IN AREA WHERE LIGHTS MOVED BUT OLD TAXI LINE NOT BLACKED OUT ADEQUATELY. ALMOST HIT LIGHTS.

Narrative: VISIBILITY RESTR DUE TO FOG. EARLY MORNING DEP. OFF THE GATE GND ISSUED CLRNC TO TAXI TO 18L VIA B, J TAXIWAYS. WE LOOKED AT CHART AND BOTH OF US AGREED THE TAXIWAY IN FRONT OF US WAS B IT ANGLED AS CHART INDICATED BUT WAS NOT MARKED. AFTER ENTERING TAXIWAY, WE SAW B FURTHER TO THE W, WE WERE ACTUALLY ON A2. I WENT HEADS DOWN TO REVIEW CHART, WHEN I LOOKED UP I REALIZED CAPT WAS ABOUT TO HIT TAXIWAY LIGHTS. HE HAD LINED UP ON YELLOW TAXI LINE BUT THE TAXIWAY LIGHTS HAD BEEN REINSTALLED, JUST OUTSIDE OF THIS LINE AND A NEW YELLOW LINE PAINTED FURTHER IN. SO TAXI CONCRETE WIDTH APPEARED NORMAL BUT TAXIWAY ACTUALLY MADE SMALLER BY SHIFTING LIGHTS AND TAXI LINE. OLD TAXI LINE WAS NOT BLOCKED OUT ADEQUATELY. SMOOTH TRANSITION WAS MADE SO WE ASSUMED THAT NO DAMAGE TO ACFT OR TAXI LIGHT HAD OCCURRED. WE INSPECTED ACFT AT DEST. AND DID NOT SEE ANY INDICATION OF HITTING ANY LIGHTS. GND ISSUED INSTRUCTIONS TO STOP AT T8 AND CONTACT TWR. AS WE APCHED T8 WE ADVISED WE NEEDED FULL LENGTH OF RWY AND TWR OKAYED BACK TAXI AND TKOF BUT CAPT PROCEEDED TO 'T' AND ENTERED RWY AT FULL LENGTH POS. CONTRIBUTING FACTORS: EARLY MORNING (DAWN), NO OR POOR TAXIWAY MARKINGS, CONSTRUCTION IN AREA, ARPT NOTAMS DID NOT INDICATE ANYTHING UNUSUAL, OLD TAXI LINE NOT REMOVED.

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.