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 CLIMB OUT. ACCOMPLISHED QRH & LIGHT EXTINGUISHED. EMERGENCY DECLARED FLIGHT RETURNED LAS LANDED WITHOUT INCIDENT. REPLACED PNEUMATIC GND CONNECTOR & CHECK VLV THAT WAS LEAKING. SYS GND CHECKED NORMAL, OPERATION CLOSED.