As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA ABORTED TAKEOFF AT 70 KTS DUE TO AUTOFEATHER FAILING TO ARM. INSPECTED AND CLEANED CONNECTORS ON BOTH NR 1 AND NR 2 TSCU'S/ COMPLIED WITH AUTOFEATHER AND POWER UPTRIM TEST. CHECKED GOOD SEVERAL TIMES. NO OTHER DEFECTS NOTED. NO PARTS REPLACED AIRCRAFT RETURNED TO SERVICE.