As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER AUTOFEATHER WAS SELECTED IT DID NOT INITIALLY ARM DURING TAKEOFF ROLL. WHEN IT DID ARM, IT CAUSED NR 2 ENGINE TO SURGE UNCOMMANDED. GROUND RAN AIRCRAFT AND PERFORMED AUTOFEATHER AND STATIC TEST WITH NO DEFECTS NOTED. PERFORMED POWER RUN AND CONFIRMED AUTO FEATHER ARMING AT APPROXIMATELY 70 PERCENT TORQUE NUMEROUS TIMES WITH NO SURGING NOTED.