As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED TAIL COMPARTMENT TEMP HIGH LIGHT ILLUMINATED DURING CLIMBOUT. FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT SIDE AIR CYCLE MACHINE SHIM THAT WAS CRACKED. SYSTEM GROUND CHECK NORMAL OPERATION.