As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SOON AFTER TAKEOFF, A NOISE WAS HEARD AND THERE WAS AN IMMEDIATE SPOOLDOWN OF THE LEFT ENGINE. A RETURN WAS EXECUTED AN UNEVENTFUL SINGLE ENGINE LANDING WAS MADE. THE ENGINE IS CURRENTLY BEING REMOVED FROM THE AIRCRAFT AND WILL BE SHIPPED TO MFG FOR EVALUATION AND REPAIR. MFG TECH THAT HAVE EXAMINED THE ENGINE EXTERNALLY SUSPECT THE FAILURE OF A TURBINE BLADE. (K)