As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAIL COMPARTMENT HIGH TEMP INDICATION DURING CLIMB OUT. EMER DECLARED FLIGHT RETURNED & LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. REPLACED RT GND AIR CONDITIONING CHECK VLV GASKET THAT WAS LEAKING. SYS GND CHECKED NORMAL OPERATION CLOSED.