Narrative:

Taxiing south on taxiway F, approaching K loop, told 'taxi shortest way' to runway 8L. Had previously been told to 'taxi runway 8L W1.' captain had no experience in europe, I over 2 yrs experience. Dark evening with no other ground traffic. On south side of K loop, told 'cleared for takeoff runway 8L.' stopped at approximately right turn on S1 (see attached chart). I thought we were at W1. Continued taxi and crossed runway 8L at S1 thinking the hold short lights we could see were for wy 8L -- they were for runway 8R. As we exited runway 8L sbound, flight engineer said 'I think we just crossed a runway.' stopped at S1. Informed ground of our location. Reclred back onto runway 8L on S2 for takeoff. Paris has unsatisfactory ground markings. Very confusing. Due to taxi route, we did not cross any stop bars! It was dark and no other aircraft to judge our location from. Ground was of no help. Confusion in cockpit. Captain was relying on me for ground guidance. To do again, I would have had captain stop plane and we would have discussed route he wanted to taxi to get to runway. No help from ground control. Unsatisfactory ground markings. Supplemental information from acn 451425: both copilot and myself have taxi chart out. We request further instructions 3 times during taxi. Copilot and I disagreed on which was shortest route. I wanted to go via W1, he via K3, W2 to W1. Supplemental information from acn 451276: it was dark, there were no red hold short lights on our route of taxi. The runway edge lights were off, and the centerline lights were not visible.

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Original NASA ASRS Text

Title: A B727 FLC TAXIED ACROSS AN ACTIVE RWY AT CDG, FO.

Narrative: TAXIING S ON TXWY F, APCHING K LOOP, TOLD 'TAXI SHORTEST WAY' TO RWY 8L. HAD PREVIOUSLY BEEN TOLD TO 'TAXI RWY 8L W1.' CAPT HAD NO EXPERIENCE IN EUROPE, I OVER 2 YRS EXPERIENCE. DARK EVENING WITH NO OTHER GND TFC. ON S SIDE OF K LOOP, TOLD 'CLRED FOR TKOF RWY 8L.' STOPPED AT APPROX R TURN ON S1 (SEE ATTACHED CHART). I THOUGHT WE WERE AT W1. CONTINUED TAXI AND CROSSED RWY 8L AT S1 THINKING THE HOLD SHORT LIGHTS WE COULD SEE WERE FOR WY 8L -- THEY WERE FOR RWY 8R. AS WE EXITED RWY 8L SBOUND, FE SAID 'I THINK WE JUST CROSSED A RWY.' STOPPED AT S1. INFORMED GND OF OUR LOCATION. RECLRED BACK ONTO RWY 8L ON S2 FOR TKOF. PARIS HAS UNSATISFACTORY GND MARKINGS. VERY CONFUSING. DUE TO TAXI RTE, WE DID NOT CROSS ANY STOP BARS! IT WAS DARK AND NO OTHER ACFT TO JUDGE OUR LOCATION FROM. GND WAS OF NO HELP. CONFUSION IN COCKPIT. CAPT WAS RELYING ON ME FOR GND GUIDANCE. TO DO AGAIN, I WOULD HAVE HAD CAPT STOP PLANE AND WE WOULD HAVE DISCUSSED RTE HE WANTED TO TAXI TO GET TO RWY. NO HELP FROM GND CTL. UNSATISFACTORY GND MARKINGS. SUPPLEMENTAL INFO FROM ACN 451425: BOTH COPLT AND MYSELF HAVE TAXI CHART OUT. WE REQUEST FURTHER INSTRUCTIONS 3 TIMES DURING TAXI. COPLT AND I DISAGREED ON WHICH WAS SHORTEST RTE. I WANTED TO GO VIA W1, HE VIA K3, W2 TO W1. SUPPLEMENTAL INFO FROM ACN 451276: IT WAS DARK, THERE WERE NO RED HOLD SHORT LIGHTS ON OUR RTE OF TAXI. THE RWY EDGE LIGHTS WERE OFF, AND THE CTRLINE LIGHTS WERE NOT VISIBLE.

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.