As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAS - CREW REPORTED TAIL COMPARTMENT TEMPERATURE HIGH LIGHT ILLUMINATED DURING CLIMBOUT. EMERGENCY DECLARED FLIGHT RETURNED LAS LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT FLOW CONTROL VALVE AND RIGHT AC PACK DUCT FROM FLOW CONTROL VALVE TO HEAT EXCHANGER. SYSTEM GROUND CHECK NORMAL OPERATION.