As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 712 FROM TOL TO BNA. ON CLIMBOUT, NR 3 ENGINE WENT TO AN OVERSPEED CONDITION WITH NO THROTTLE RESPONSE. THE NR 3 ENGINE WAS SHUTDOWN AN APPROPRIATE CHECKLIST ACCOMPLISHED. DECLARED AN EMERGENCY AND NOTIFIED ATC, AIR TURNBACK TO TOL AND AIRCRAFT LANDED WITHOUT INCIDENT. READJUSTED AND RESECURED THE NR 3 THROTTLE ROD END BETWEEN CROSSOVER SHAFT AND FUEL CONTROL. PERFORMED ENGINE RUN AND SYSTEMS CHECK GOOD IAW MM 72-00, 76-10 & 73-00. AIRCRAFT RETURNED TO SERVICE.