As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) POWER ROLL BACK DURING CLIMB, THE ENGINE POWER ROLLED BACK. THE CREW PULLED THE THRUST LEVER TO IDLE AND CONTINUED CLIMB WITH THE SECOND ENGINE. THE THRUST LEVER WAS READVANCED AT FL130, THE ENGINE RESPONDED WELL AND THE FLIGHT CONTINUED TO DESTINATION NORMALLY. TROUBLESHOOTING IS ON-GOING.