As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CAPTAIN REPORTED A LEFT ENGINE N2 FLUCTUATION AT CRUISE BETWEEN 88.2 AND 97.6.FOLLOWING SEVERAL PROCEDURES AND PART CHANGES (ADJUSTMENT OF IDLE SPEED, VG FEEDBACK, REPLACEMENT OF FCU & OF T2C SENSOR), THE AIRCRAFT WAS FERRY TO THE MAIN BASE. THE MAINTENANCE THEN REPLACED THE ALTERNATOR STATOR AND ROTOR (STATOR S/N GJAHJ368 AND ROTOR S/N GJAK1576). AIRCRAFT RETURNED TO SERVICE.