As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS 15 MIN AFTER TAKEOFF PASSING FL200 RT ENGINE OVERHEAT LIGHT ILLUMINATED. REDUCED ENGINE TO IDLE, LIGHT EXTINGUISHED. EMERGENCY DECLARED, RETURNED TO DFW. MAINTENANCE TROUBLESHOT IAW FIM 26-10-00-810-811 AND FOUND LEAK ON HPT COOLING DUCT. REMOVED AND REPLACED DUCT IAW EM 72-54-11-300, LEAK CHECK GOOD. PERFORMED HIGH POWER ENGINE RUN FOR 10 MIN, NO OVERHEAT INDICATIONS. OK FOR SERVICE.