As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING REVENUE FLIGHT IN CRUISE, THE LT ENGINE REDUCED POWER APPROXIMATELY 10 PERCENT, FROM A N1 SPEED, 90.6 PERCENT TO 80.6 PERCENT. NO ENGINE WARNING LIGHTS ILLUMINATED. AFTER A FEW MINUTES THE ENGINE RESUMED POWER BY ITSELF. TROUBLESHOOTING IS ON-GOING.