As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT, NR 4 A,B NACELLE TEMPERATURE INDICATOR READ 7.0 UNITS ON BOTH SYSTEMS WITH CLIMB THRUST SETTING. DUMPED FUEL AND ACCOMPLISHED AIR TURNBACK TO MIA WITHOUT INCIDENT. FOUND ENGINE BORESCOPE PLUG AT 12 O'CLOCK POSITION ON DIFFUSER CASE MISSING. INSPECTED OTHER PLUGS AND FOUND ONE LOOSE AT 7 O'CLOCK POSITION. REPLACED MISSING PLUG AND TORQUED LOOSE BORE PLUG. PERFORMED ENGINE LEAK CHECK AND ENGINE POWER RAN AT 2 MIN, NO DEFECTS.