As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 201 FROM MIA TO CCS. AFTER TAKEOFF NR 1 ENGINE STAYED AT FULL POWER AND WOULD NOT RESPOND TO THROTTLE MOVEMENT. ACCOMPLISHED NR 1 ENGINE SHUTDOWN AND AIR TURNBACK TO MIA AND LANDED WITHOUT ANY INCIDENT. INVESTIGATION FOUND THE LOWER THRUST CRANK BOLT WAS MISSING IN NR 1 ENGINE. REINSTALLED BOLT AND COTTER PIN IAW MM 71-00 AND ENGINE RUN OPERATIONAL CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.