As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENG NACELLE TEMP READ 300+ ON CLIMB OUT. TEMP. REACTED TO THROTTLE MOVEMENT. DUMPED APPROX. 30K LBS. RETURNED TO FIELD, LANDING NORMAL. MAINTENANCE FOUND IP CHECK VALVE CLAMP OFF DUCT. REINSTALLED CLAMP IAW PROCESS MATERIAL SPEC. MANUAL 01-05-42. ENGINE RUN UP LEAK AND OP'S CK GOOD. AIRCRAFT RETURNED TO SERVICE.