As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, THE F/O NOTED A NEGATIVE AIRSPEED INDICATION. AN ABORTED TAKEOFF WAS PERFORMED AND THE ACFT RETURNED TO THE BLOCKS WITHOUT INCIDENT. POST FLIGHT INSPECTION WAS PERFORMED NOTING THAT THE AIR DATA COMPUTER WAS AT FAULT. R & R THE AIR DATA COMPUTER AND PERFORMED OPS CHECKS. ACFT WAS RETURNED TO SERVICE.