As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF, NR 1 POWER LEVER HAD 2 KNOB SPLIT. WHEN SWITCH SET TO NORM, THE NR 1 ENGINE TORQUE SURGED TO 96 PERCENT MOMENTARILY, THEN DROPPED TO 80 PERCENT. NO CAUTION LIGHT OR ENGINE REVERSION. R & R 1 HMU IAW WORKCARD 73-20-01R, 76-00-01Q AND 72-01-01X. OPS AND LEAKED CHECKED GOOD. CLEARED MEL.