As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLT 4627, AFTER SETTING CLIMB THRUST THE LT ENGINE ACCELERATED TO OVER 101 PERCENT. THE POWER LEVER WAS RETARDED AND THE ENGINE (N1) THEN LATER DROPPED BY 6 PERCENT UNCOMMANDED. REMOVE AND REPLACE NR 1 ENGINE N1 CONTROL AMPLIFIER. PERFORMED FUNCTIONAL CHECK IAW CRJ POWER PLANT GROUND RUN MANUAL 77-00-00. OPS CHECK GOOD.