As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED ON CLIMBOUT TAIL COMPARTMENT TEMPERATURE OVERHEAT LIGHT ILLUMINATED. ACCOMPLISHED QRH PROCEDURE AND LIGHT EXTINGUISHED. EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND DUCT BOOT AND CLAMP LOOSE. TIGHTENED CLAMP. SYSTEM GROUND CHECK NORMAL OPERATION.