As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WAS REMOVED FROM SERVICE DUE TO VIBRATION. DISASSEMBLY OF THE ENGINE REVEALED A SECTION OF THE HPT REAR SHAFT HAD LIBERATED CAUSING EXTENSIVE DAMAGE WITHIN THE HPT AND LPT MAJOR MODULES. FAILURE INVESTIGATION IS BEING CONDUCTED.