Narrative:

Captain was taxiing for takeoff runway 27 cdg. We were at maximum gross weight and needed all the runway, so captain turned right at point 1 (see graphic). If turn is not made, runway length is shortened due to confign of intersection. Right truck left pavement and sank into dirt. Because the dirt area was on my side, I was aware that he was turning a little closer than I had seen other capts doing it. But I thought that the gear was positioned to stay on pavement so did not override the brakes or issue any warning. I believe the problem occurred because: 1) the captain was not in visual contact with the small dirt area (his view was of lots of concrete in front and to both sides due to the overrun portion). 2) I was aware but not trained or experienced enough to know exactly how much clearance we had. Suggestions to prevent recurrence: 1) pave triangular area to end of runway (not overrun). 2) paint line across runway at point taxiway intersects runway. 3) change usable length figures or runway and provide new takeoff charts. 4) formal taxi training for coplts.

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Original NASA ASRS Text

Title: A WDB ACR GOT ONE OF ITS MAIN GEAR TRUCKS OFF OF THE PAVEMENT WHILE ATTEMPTING TO USE ALL OF THE RWY FOR A MAX GROSS TKOF.

Narrative: CAPT WAS TAXIING FOR TKOF RWY 27 CDG. WE WERE AT MAX GROSS WT AND NEEDED ALL THE RWY, SO CAPT TURNED R AT POINT 1 (SEE GRAPHIC). IF TURN IS NOT MADE, RWY LENGTH IS SHORTENED DUE TO CONFIGN OF INTXN. R TRUCK LEFT PAVEMENT AND SANK INTO DIRT. BECAUSE THE DIRT AREA WAS ON MY SIDE, I WAS AWARE THAT HE WAS TURNING A LITTLE CLOSER THAN I HAD SEEN OTHER CAPTS DOING IT. BUT I THOUGHT THAT THE GEAR WAS POSITIONED TO STAY ON PAVEMENT SO DID NOT OVERRIDE THE BRAKES OR ISSUE ANY WARNING. I BELIEVE THE PROB OCCURRED BECAUSE: 1) THE CAPT WAS NOT IN VISUAL CONTACT WITH THE SMALL DIRT AREA (HIS VIEW WAS OF LOTS OF CONCRETE IN FRONT AND TO BOTH SIDES DUE TO THE OVERRUN PORTION). 2) I WAS AWARE BUT NOT TRAINED OR EXPERIENCED ENOUGH TO KNOW EXACTLY HOW MUCH CLRNC WE HAD. SUGGESTIONS TO PREVENT RECURRENCE: 1) PAVE TRIANGULAR AREA TO END OF RWY (NOT OVERRUN). 2) PAINT LINE ACROSS RWY AT POINT TXWY INTERSECTS RWY. 3) CHANGE USABLE LENGTH FIGURES OR RWY AND PROVIDE NEW TKOF CHARTS. 4) FORMAL TAXI TRAINING FOR COPLTS.

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.