As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - INFLIGHT PSP-DFW. CREW REPORTED TAIL COMPARTMENT OVERHEAT WARNING DURING FLIGHT. EMERGENCY DECLARED FLIGHT DIVERTED PHX LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND DUCT IN TAIL SECTION WITH LARGE CRACK. REPLACED DUCT. SYSTEM GROUND CHECK NORMAL OPERATION.