As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, TAIL COMPARTMENT TEMPERATURE LIGHT AND MASTER WARNING LIGHT ILLUMINATED. LIGHTS REMAINED ON APPROXIMATELY 10 SECONDS AFTER COMPLETING MEMORY ITEMS ON CHECKLIST. EMERGENCY WAS DECLARED AND AIRCRAFT RETURNED TO DEPARTURE. LANDED WITHOUT INCIDENT. AIRCRAFT WAS GROUNDED. ACCOMPLISHED CARD 0930 SUMMER PREP, 26-96-11 TAIL COMPARTMENT TEMP HIGH LIGHT, 36-95-14 TAIL COMPARTMENT LEAKS AND 5770-20. REPLACED RIGHT AUGMENTATION VALVE.