As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JUST AFTER TAKEOFF, THE LT ENGINE MADE A LOUD NOISE AND TORQUE DROPPED OFF. THE ENGINE WAS SECURED AND THE AIRCRAFT RETURNED AND LANDED WITHOUT INCIDENT. MAINTENANCE DETERMINED A FAILURE OF THE CT DISK BLADES, CAUSE UNKNOWN. THE ENGINE WAS REMOVED FOR REPAIR.