THE LCL CTLR CLRED SEVERAL ACFT TO CROSS RWY 18L; THEN MISTAKENLY CLRED AN ACR ACFT FOR TKOF ON THE SAME RWY. A TAXIING FK10 CROSSED THE HOLD LINE; BUT HELD SHORT OF THE RWY AFTER OBSERVING THE DEPARTING ACFT START TO ROLL. THE DEP ACFT ABORTED TKOF.

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LOCATION ON TXWY A EBOUND HOLDING SHORT OF RWY 18L. AFTER LNDG ON RWY 13R AT DFW WE HAD CROSSED RWY 18R AND WERE HOLDING SHORT OF RWY 18L ON TXWY A. SEVERAL OTHER ACFT WERE ALSO HOLDING SHORT OF RWY 18L AT OTHER TXWYS WAITING TO CROSS FROM W TO E. AFTER WAITING THROUGH SEVERAL DEPS THE TWR CTLR CLRED OUR FLT AND SEVERAL OTHER FLTS TO CROSS RWY 18L AND STATED THAT THERE WAS NO NEED TO ACKNOWLEDGE THE XMISSION AND THAT HE WOULD OBSERVE OUR XING. THE ACFT TO OUR L ON TXWY B HAD PULLED FORWARD ENOUGH TO OBSTRUCT OUR VIEW OF THE DEP END OF RWY 18L. WE HESITATED LONG ENOUGH TO SEE BEYOND THE ACFT ON TXWY B AND OBSERVED ANOTHER ACFT ON ITS TKOF ROLL ON RWY 18L. WE THEN XMITTED TO THE TWR THAT WE WERE HOLDING SHORT OF RWY 18L. THE TWR CALLED FOR THE ACFT TO ABORT ITS TKOF. WE WERE HOLDING SHORT OF RWY 18L BUT WERE SEVERAL FT BEYOND THE HOLD SHORT LINE. WE FELT UNCOMFORTABLE WITH THE XMISSION FROM THE TWR STATING THAT THERE WAS NO NEED TO ACKNOWLEDGE THE RWY XING CLRNC SINCE USUALLY THIS REQUIRES ACKNOWLEDGEMENT. SUPPLEMENTAL INFO FROM ACN 378976: FLT ON TKOF ROLL AT DFW ABORTED THE TKOF TO AVOID ANOTHER ACFT XING DOWN-FIELD. THE CTLR ALSO INSTRUCTED TO ABORT; BUT IN THE PANIC HE USED THE INCORRECT FLT NUMBER. THE ABORT WAS UNEVENTFUL AND WE DIDN'T GET CLOSE TO THE OTHER ACFT. (THE CTLR CLRED US TO TKOF WHILE XING ANOTHER FLT DOWN-FIELD.)