What was found
EN ROUTE MIA-ORD, TAIL COMPARTMENT TEMPERATURE HIGH LIGHT ILLUMINATED AFTER TAKEOFF. PERFORMED PROCEDURE, LIGHT DID NOT EXTINGUISH AFTER 2 MINUTES. RETURNED AND LANDED MIA WITHOUT INCIDENT. REPLACED LEFT PNEUMATIC SUPPLY TEMPERATURE SENSOR GASKET BROKEN. PRESSURIZED PNEUMATIC DUCTS, NO FURTHER LEAKS NOTED. NO FAULTS NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)