Narrative:

We were cleared to taxi into position and hold behind an airliner already in position on 27R. After the air carrier departed, we were cleared to take off with a right turn to 290 degrees. At this point our final takeoff checklist items were completed and takeoff power was set. During my takeoff scan of the engineer panel, I heard what sounded like the controller, over the radio, saying something to the effect of 'what are you doing,' and a short pause. Then the controller instructed us to 'abort takeoff,' at which point we aborted--and at the far end of the runway was the nose of a heavy transport that was taxiing onto the runway. We had been cleared for takeoff and the heavy transport may have misunderstood taxi instructions. We taxied back and had a successful flight. I do not mean to say this was the pilot of the heavy transport error, it may have been the controller's instructions.

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Original NASA ASRS Text

Title: LGT ABORTED TKOF ON TWR CTLR INSTRUCTION ACCOUNT HEAVY ENTERING RWY AT DEP END.

Narrative: WE WERE CLRED TO TAXI INTO POS AND HOLD BEHIND AN AIRLINER ALREADY IN POS ON 27R. AFTER THE ACR DEPARTED, WE WERE CLRED TO TAKE OFF WITH A RIGHT TURN TO 290 DEGS. AT THIS POINT OUR FINAL TKOF CHKLIST ITEMS WERE COMPLETED AND TKOF PWR WAS SET. DURING MY TKOF SCAN OF THE ENGINEER PANEL, I HEARD WHAT SOUNDED LIKE THE CTLR, OVER THE RADIO, SAYING SOMETHING TO THE EFFECT OF 'WHAT ARE YOU DOING,' AND A SHORT PAUSE. THEN THE CTLR INSTRUCTED US TO 'ABORT TKOF,' AT WHICH POINT WE ABORTED--AND AT THE FAR END OF THE RWY WAS THE NOSE OF A HVT THAT WAS TAXIING ONTO THE RWY. WE HAD BEEN CLRED FOR TKOF AND THE HVT MAY HAVE MISUNDERSTOOD TAXI INSTRUCTIONS. WE TAXIED BACK AND HAD A SUCCESSFUL FLT. I DO NOT MEAN TO SAY THIS WAS THE PLT OF THE HVT ERROR, IT MAY HAVE BEEN THE CTLR'S INSTRUCTIONS.

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.