As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE IN CRUISE, THE PILOTS REPORTED THAT ON 2 OCCASIONS THE NR 2 ENGINE THROTTLE, AUTO THROTTLE MODE, MOVED BACK UN-COMMANDED WHILE THE ALL 3 ENGINE PARAMETERS REMAINED UNCHANGED. MFG IS AWAITING ENGINE DATA DOWNLOAD FOR TROUBLESHOOTING PURPOSES. MFG WILL INVESTIGATE TO ESTABLISH ROOT CAUSE AND PROVIDE INFORMATION THROUGH SUBSEQUENT SERVICE DIFFICULTY REVIEW MEETING AND SUPPORTING DOCUMENTS OR OTHER AGREED UPON COMMUNICATIONS.