As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - LEFT ENGINE SURGING 30 PERCENT TORQUE ON TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE ADJUSTED COMPENSATING RESISTOR AND CLEANED TORQUE RING CANNON PLUG. NO DISCREPANCIES NOTED ON GROUND RUN. AIRCRAFT RETURNED TO SERVICE. (M)