As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB THE TAIL COMPARTMENT TEMPERATURE HIGH WARING ILLUMINATED ACCOMPANIED BY FIRE AGENT 2 LOW LIGHT ILLUMINATION. EMERGENCY DECLARED. RETURNED TO FIELD. THE AIRCRAFT WAS GROUNDED. ACCOMPLISHED HIGH PRESSURE LEAK CHECK IAW TASK CARD 5461. OPERATIONAL CHECK GOOD. (CLOSED)