As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AS THE POWER LEVERS WERE BEING ADVANCED TO START THE TAKEOFF ROLL, THE AUTOFEATHER SYSTEM DID NOT ACTIVATE AND THE NR 2 ENGINE TORQUE INDICATION WENT TO 105% FOR AT 3 SECONDS. MAINTENANCE PERFORMED THE BETA LOCKOUT GROUND LOGIC OPS CHECK WORKCARD. MICRO SWITCH 6121-S10 AND WIRES 6121-16D22 & 6121-17A22 RUNNING FROM THE -S10 SWITCH TO CONNECTOR 9811-P38 WERE REPLACED. GROUND CHECKS WERE GOOD AND AIRCRAFT WAS RELEASED FOR SERVICE.