As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOWER AFT BODY OVERHEAT LIGHT STARTED TO FLICKER ON PASSING THROUGH 27K FT. ON CLIMBOUT LIGHT WENT OUT AFTER TURNED OFF RT PACK AND CLOSED BLEED NR 3 COMPLETED QRH PROCEDURES CONTINUED AT FL280. COMPLIED WITH ADJUST AND TEST AND TROUBLE SHOOTING CHART UNABLE TO DUPLICATE. M/M 26-14-000-5 REPLACED OVER HEAT DETECTION CONTROL UNIT M/M 26-14-11.