As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JAX INFLIGHT T1328/16NOV MIA TO PHL - LEFT ENGINE INFLIGHT SHUTDOWN DUE TO LEFT ENGINE ROLLBACK. LANDED JAX WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE FOR EVALUATION AND REPAIR. REPLACED HYDROMECHANICAL UNIT FOR LEFT ENGINE. SYSTEM GROUND CHECKED NORMAL OPERATION.