As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - LEFT ENGINE RPM REPORTED ERRATIC UPON POWER APPLICATION ON TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE PERFORMED FULL POWER ENGINE GROUND RUN WITH FRICTION LOCK SET ON SPEED LEVER. NO DISCREPANCIES NOTED. UNABLE TO DUPLICATE REPORTED DISCREPANCY. AIRCRAFT RETURNED TO SERVICE. (M)