As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT ROTATION A GREATER THAN 40KT AIRSPEED DISCREPENCY OCCURRED BETWEEN CAPT AND F/O INSTRUMENTS. CONTROL OF AIRCRAFT WAS TRANSFERRED TO F/O. CONTINUOUS OVERSPEED WARNING SOUNDED OVER CAWS. A 100KT A/S DISCREPENCY WAS NOTED AT ONE POINT. SELECTED BOTH CADC ON 2. AIRSPEEDS STABILIZED TO NORMAL. AN ACS FAULT MESSAGE WAS NOTED AT THAT TIME. FOUND NR 1 CADC HAD NO POWER AND WOULD NOT SELF TEST. REPLACED NR 1 CADC PER MM, NR 1 CADC FUNCTION TEST GOOD PER MM.