As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 528 - DFW-ATL - TAIL COMPARTMENT HIGH TEMP LIGHT CAME ON 3 TIMES DURING CLIMB-OUT. AIRCRAFT RETURNED DFW AND LANDED WITHOUT INCIDENT. MAINTENANCE DISCOVERED CLAMPS THAT SECURE THE EIRHG TRIM AIR VALVE TO BE LOOSE. RESECURED THE ASSOCIATED V-BAND CLAMPS. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)