As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUS - REPEAT ITEM CREW REPORTED TAIL COMPARTMENT TEMPERATURE HIGH LIGHT ILLUMINATED ON CLIMBOUT. EMERGENCY DECLARED FLIGHT RETURNED AUS LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND DUCT CRACKED ON THE RIGHT SIDE OF AFT ACCESSORY COMPARTMENT. REPLACED DUCT. SYSTEM GROUND CHECK NORMAL OPERATION.