As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING TAKEOFF ROLL AFTER 80 KTS WE HAD AN AIRSPEED UNRELIABLE. CAPTAIN AND STBY ISFD SPEED WERE AT 125 KTS, FO SPEED WAS STUCKAT 80 KTS AND THEN 40-45K DIFFERED FROM CAPT AND STND BY INDICATIONS. MAINTENANCE REMOVED AND REPLACED FO ADM IAW AMM 34-21-04.