Narrative:

We landed at dfw on runway 13R. While holding short of runway 18R on taxiway a, the tower issued instructions to cross runway 18R and hold short runway 18L. He also said to expedite crossing as the aircraft landing was unrestr. I acknowledged the immediate crossing and simultaneously advanced the throttles. I was about 1/3 the way across the runway when I heard instructions to hold short runway 18R. I replied I was unable because I was already on the runway. The tower issued go around instructions to the landing aircraft. I was instructed to call tower on termination. Another aircraft said, on tower frequency, that the first hold short instruction was blocked. I talked to the west tower supervisor. He said possibly the first hold short was blocked and acknowledged it was too late to stop when I acknowledged with an unable to hold short. He said he considered the incident closed.

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Original NASA ASRS Text

Title: AN S80 FLC IS UNABLE TO HOLD SHORT OF ACTIVE RWY AFTER CTLR CHANGES HIS MIND ABOUT METHOD OF SEPARATION OF TAXIING AND LNDG ACFT FOR RWY 18R AT DFW, TX.

Narrative: WE LANDED AT DFW ON RWY 13R. WHILE HOLDING SHORT OF RWY 18R ON TXWY A, THE TWR ISSUED INSTRUCTIONS TO CROSS RWY 18R AND HOLD SHORT RWY 18L. HE ALSO SAID TO EXPEDITE XING AS THE ACFT LNDG WAS UNRESTR. I ACKNOWLEDGED THE IMMEDIATE XING AND SIMULTANEOUSLY ADVANCED THE THROTTLES. I WAS ABOUT 1/3 THE WAY ACROSS THE RWY WHEN I HEARD INSTRUCTIONS TO HOLD SHORT RWY 18R. I REPLIED I WAS UNABLE BECAUSE I WAS ALREADY ON THE RWY. THE TWR ISSUED GAR INSTRUCTIONS TO THE LNDG ACFT. I WAS INSTRUCTED TO CALL TWR ON TERMINATION. ANOTHER ACFT SAID, ON TWR FREQ, THAT THE FIRST HOLD SHORT INSTRUCTION WAS BLOCKED. I TALKED TO THE W TWR SUPVR. HE SAID POSSIBLY THE FIRST HOLD SHORT WAS BLOCKED AND ACKNOWLEDGED IT WAS TOO LATE TO STOP WHEN I ACKNOWLEDGED WITH AN UNABLE TO HOLD SHORT. HE SAID HE CONSIDERED THE INCIDENT CLOSED.

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.