Narrative:

Taxi to mia runway 8R. When approximately 6000 ft short of hold short line, noticed we were #1. At 3000 ft short of hold short, completed PA, came back on radio with first officer, heard 'cleared on to hold, keep it rolling, cleared for takeoff, traffic 4 mi final, turn right 120 degrees after takeoff.' turned right toward runway 8R, crossed runway 8R hold line. Tower instructed continued right turn and clear runway. Did not hear tower change runway to mia runway 12. Supplemental information from acn 636236: was taxiing down taxiway M and was expecting to depart runway 8R. Towards (not at the end) the end of the taxiway area and pad area, ATC changed the runway to runway 12 and informed our flight to keep the aircraft rolling and go to position and hold. The first officer accepted the clearance and changed the heading selector from 92 degrees to 123 degrees. Also the runway was changed in the CDU from runway 8R to runway 12. The first officer asked the captain if he was ready to go to position and hold on runway 12. The captain said he was ready. At the end of the runway environment, the aircraft made a very abrupt turn to the right and was not creating an incursion onto runway 8R. There was very little time to react to the incorrect turn and it seemed prudent by then to keep the turn going right round to 180 degrees to remove the aircraft from the runway 8R environment as soon as possible. ATC was aware of this situation and reclred flight to position and hold on runway 12. Flight departed runway 12 without any further delay.

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Original NASA ASRS Text

Title: RWY INCURSION WHEN A RWY CHANGE IS MADE FOR A DEP B757 FLT WHILE THE PIC IS ON THE PA WELL SHORT OF THE HOLD LINE FOR RWYS 8 AND 12 AT MIA.

Narrative: TAXI TO MIA RWY 8R. WHEN APPROX 6000 FT SHORT OF HOLD SHORT LINE, NOTICED WE WERE #1. AT 3000 FT SHORT OF HOLD SHORT, COMPLETED PA, CAME BACK ON RADIO WITH FO, HEARD 'CLRED ON TO HOLD, KEEP IT ROLLING, CLRED FOR TKOF, TFC 4 MI FINAL, TURN R 120 DEGS AFTER TKOF.' TURNED R TOWARD RWY 8R, CROSSED RWY 8R HOLD LINE. TWR INSTRUCTED CONTINUED R TURN AND CLR RWY. DID NOT HEAR TWR CHANGE RWY TO MIA RWY 12. SUPPLEMENTAL INFO FROM ACN 636236: WAS TAXIING DOWN TXWY M AND WAS EXPECTING TO DEPART RWY 8R. TOWARDS (NOT AT THE END) THE END OF THE TXWY AREA AND PAD AREA, ATC CHANGED THE RWY TO RWY 12 AND INFORMED OUR FLT TO KEEP THE ACFT ROLLING AND GO TO POS AND HOLD. THE FO ACCEPTED THE CLRNC AND CHANGED THE HDG SELECTOR FROM 92 DEGS TO 123 DEGS. ALSO THE RWY WAS CHANGED IN THE CDU FROM RWY 8R TO RWY 12. THE FO ASKED THE CAPT IF HE WAS READY TO GO TO POS AND HOLD ON RWY 12. THE CAPT SAID HE WAS READY. AT THE END OF THE RWY ENVIRONMENT, THE ACFT MADE A VERY ABRUPT TURN TO THE R AND WAS NOT CREATING AN INCURSION ONTO RWY 8R. THERE WAS VERY LITTLE TIME TO REACT TO THE INCORRECT TURN AND IT SEEMED PRUDENT BY THEN TO KEEP THE TURN GOING RIGHT ROUND TO 180 DEGS TO REMOVE THE ACFT FROM THE RWY 8R ENVIRONMENT ASAP. ATC WAS AWARE OF THIS SIT AND RECLRED FLT TO POS AND HOLD ON RWY 12. FLT DEPARTED RWY 12 WITHOUT ANY FURTHER DELAY.

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.