As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA- AUTO FEATHER FAILED TO ARM ON TAKEOFF. ABORTED TAKEOFF AND RETURNED TO GATE. SWAPPED TORQUE SIGNAL CONDITIONERS, CONFIRMED LAYSHAFT SWITCHES. CHECKED RELAYS 6121-K3, K4 AND K5, NO DEFECTS FOUND. REPLACED NR 1 AUTO FEATHER TEST SWITCH, OPERATIONAL CHECKS NORMAL.