What was found
FLT 11, INBOUND TO ATL, NR 3 ENGINE WAS SHUTDOWN IN FLIGHT, WOULD NOT RESPOND TO THROTTLE MOVEMENT, WENT TO MAX POWER INDICATIONS. REMOVED AND REPLACED NR 3 ENGINE FUEL CONT PER MM 73-21-2, WHEN RIGGING FOUND NUT MISSING AND CRANK OFF SHAFT AT PYLON CONNECTION POINT. REINSTALLED CRANK AND INSTALLED NUT. TRIMMED NR 3 ENGINE IAW 71-00. OPS CHECKED OK. LEAK CHECK OK. (Z)