As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - FLT 1717 - EN ROUTE MIA-ORD, PASSING THROUGH 23,000 FEET TAIL COMPARTMENT TEMPERATURE HIGH LIGHT ILLUMINATED. AIRFOIL ANTI-ICE WAS OFF AND TURNED PACKS TO HIGH PRESSURE BLEED OFF. LIGHT EXTINGUISHED. RETURNED TO MIA AND LANDED WITHOUT INCIDENT. REPLACED BOTH LEFT AND RIGHT OVER HEATS. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)