Narrative:

Approaching runway 26L for takeoff on taxiway ae; with instructions to hold short at M1 hold point; I was making the 'prepare for takeoff' PA as the first officer received the 'position and hold' clearance from ATC. Expecting taxiway M as the easternmost taxiway; I was taxiing past the turn to M1 toward taxiway Y as relief pilot called out 'hey!' to alert me that I was passing the turn toward the runway. Stopped the aircraft promptly; but we were too far to turn around safely and the ramp area south of pier 1 appeared too narrow for a 180 degree turn; so we called for a tug to push us about 50 ft back to resume approach to taxiway M. This was my first takeoff at egkk from other than txwys B or a. Expecting the usual and receiving a clearance outside the ordinary; I took from a glance at the chart that taxiway M was 'at the end;' so I proceeded toward the easternmost taxiway; only to find it was actually taxiway Y; just beyond the runway which I was heading for. The catch by the relief pilot was just a few seconds too late during xmissions by both the first officer and myself that set me up for a perfect trap for a most embarrassing situation. Greater advance planning and chart familiarity along with earlier 'takeoff' PA's should help alleviate the risk of such slips in the future.

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Original NASA ASRS Text

Title: B767-300 FLT CREW HAS A TXWY INCURSION AT EGKK.

Narrative: APCHING RWY 26L FOR TKOF ON TXWY AE; WITH INSTRUCTIONS TO HOLD SHORT AT M1 HOLD POINT; I WAS MAKING THE 'PREPARE FOR TKOF' PA AS THE FO RECEIVED THE 'POS AND HOLD' CLRNC FROM ATC. EXPECTING TXWY M AS THE EASTERNMOST TXWY; I WAS TAXIING PAST THE TURN TO M1 TOWARD TXWY Y AS RELIEF PLT CALLED OUT 'HEY!' TO ALERT ME THAT I WAS PASSING THE TURN TOWARD THE RWY. STOPPED THE ACFT PROMPTLY; BUT WE WERE TOO FAR TO TURN AROUND SAFELY AND THE RAMP AREA S OF PIER 1 APPEARED TOO NARROW FOR A 180 DEG TURN; SO WE CALLED FOR A TUG TO PUSH US ABOUT 50 FT BACK TO RESUME APCH TO TXWY M. THIS WAS MY FIRST TKOF AT EGKK FROM OTHER THAN TXWYS B OR A. EXPECTING THE USUAL AND RECEIVING A CLRNC OUTSIDE THE ORDINARY; I TOOK FROM A GLANCE AT THE CHART THAT TXWY M WAS 'AT THE END;' SO I PROCEEDED TOWARD THE EASTERNMOST TXWY; ONLY TO FIND IT WAS ACTUALLY TXWY Y; JUST BEYOND THE RWY WHICH I WAS HEADING FOR. THE CATCH BY THE RELIEF PLT WAS JUST A FEW SECONDS TOO LATE DURING XMISSIONS BY BOTH THE FO AND MYSELF THAT SET ME UP FOR A PERFECT TRAP FOR A MOST EMBARRASSING SITUATION. GREATER ADVANCE PLANNING AND CHART FAMILIARITY ALONG WITH EARLIER 'TKOF' PA'S SHOULD HELP ALLEVIATE THE RISK OF SUCH SLIPS IN THE FUTURE.

Data retrieved from NASA's ASRS site as of January 2009 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.