As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT AT FLIGHT LEVEL 200, THE LOWER AFT BODY OVERHEAT LIGHT ILLUMINATED. COMPLIED WITH ABNORMAL CHECKLIST. LOWER AFT BODY OVERHEAT LIGHT EXTINGUISHED WITH LEFT PACK OFF AND NR 1 THROTTLE RETARDED. CHECKED AFT STAIRS AREA, NO LEAKS. REMOVED AFT FORWARD LEFT CARGO LINER AND CHECKED BEHIND LINER FOR LEAKS, NONE NOTED. RAN NR 1 ENGINE AND LEFT PACK, NO DEFECTS FOUND. REINSTALLED LINER.