Narrative:

On takeoff roll at 80 KT callout, I crosschecked the captain's airspeed on his pfd and saw his airspeed 20-25 KTS lower than mine. I advised the captain and he aborted the takeoff at approximately 100 KTS on my pfd airspeed indicator. Maximum brakes were applied by the automatic brake system. Captain slowed the aircraft down, taxied clear of the runway, and stopped the aircraft. I called the tower and told them to send arff. The wheel temperatures began to climb, and the hot brake and master caution warning came on. Wheel #2 reached 700 degrees. We remained stopped with the brakes off and brake fans on until the hot master caution extinguished. Arff personnel advised that there was no smoke or fire. Captain then taxied the aircraft to the gate. No injuries reported. In addition, miami tower seemed confused as to the significance of arff. At about 5-10 mins after my first call for arff, I made another call to miami tower to request arff and include the term crash and fire rescue. This time they said they would call them. It appears that on the initial call for arff, that the miami tower did not call the fire trucks and only called the county ramp personnel who show up in 2 pickup trucks to inspect our hot brakes.

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Original NASA ASRS Text

Title: AN A300 FLT CREW NOTICES THAT THE AIRSPD INDICATORS DON'T MATCH ON TKOF ROLL RESULTING IN AN ABORTED TKOF.

Narrative: ON TKOF ROLL AT 80 KT CALLOUT, I XCHKED THE CAPT'S AIRSPD ON HIS PFD AND SAW HIS AIRSPD 20-25 KTS LOWER THAN MINE. I ADVISED THE CAPT AND HE ABORTED THE TKOF AT APPROX 100 KTS ON MY PFD AIRSPD INDICATOR. MAX BRAKES WERE APPLIED BY THE AUTO BRAKE SYS. CAPT SLOWED THE ACFT DOWN, TAXIED CLR OF THE RWY, AND STOPPED THE ACFT. I CALLED THE TWR AND TOLD THEM TO SEND ARFF. THE WHEEL TEMPS BEGAN TO CLB, AND THE HOT BRAKE AND MASTER CAUTION WARNING CAME ON. WHEEL #2 REACHED 700 DEGS. WE REMAINED STOPPED WITH THE BRAKES OFF AND BRAKE FANS ON UNTIL THE HOT MASTER CAUTION EXTINGUISHED. ARFF PERSONNEL ADVISED THAT THERE WAS NO SMOKE OR FIRE. CAPT THEN TAXIED THE ACFT TO THE GATE. NO INJURIES RPTED. IN ADDITION, MIAMI TWR SEEMED CONFUSED AS TO THE SIGNIFICANCE OF ARFF. AT ABOUT 5-10 MINS AFTER MY FIRST CALL FOR ARFF, I MADE ANOTHER CALL TO MIAMI TWR TO REQUEST ARFF AND INCLUDE THE TERM CRASH AND FIRE RESCUE. THIS TIME THEY SAID THEY WOULD CALL THEM. IT APPEARS THAT ON THE INITIAL CALL FOR ARFF, THAT THE MIAMI TWR DID NOT CALL THE FIRE TRUCKS AND ONLY CALLED THE COUNTY RAMP PERSONNEL WHO SHOW UP IN 2 PICKUP TRUCKS TO INSPECT OUR HOT BRAKES.

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.