As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RDU - FLT 735 - EN ROUTE RDU-ORD, CLIMBING THROUGH 27,000 FEET TAIL COMPARTMENT TEMPERATURE HIGH LIGHT ILLUMINATED. LIGHT EXTINGUISHED AFTER ACCOMPLISHING CHECKLIST AFTER APPROXIMATELY 1 MINUTE LIGHT ILLUMINATED AGAIN. RETURNED RDU AND LANDED WITHOUT INCIDENT. REPLACED RIGHT ACM AND AUGMENTATION VALVE. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)