As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAIL COMPARTMENT HIGH TEMPERATURE INDICATION. AIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. FLIGHT RETURNED TO DEPARTURE. LANDING UNEVENTFUL. REMOVED AND REPLACED LEAKING CLAMP BETWEEN AIR CYCLE MACHINE AND HEAT EXCHANGER IAW MCM CARD 36-95-14. LEAK AND OPERATIONAL CHECK GOOD.