What was found
TPA - FLT 940 - DURING CLIMB-OUT FROM TPA AT FL200, THE NR 1 ENGINE OVERHEAT LIGHT ILLUMINATED. CAPTAIN RETARDED THROTTLE ON THE NR 1 ENGINE TO IDLE AND THE LIGHT EXTINGUISHED. CAPTAIN DECLARED AN EMERGENCY AND RETURNED TO FIELD AT TPA. FLT LANDED WITHOUT INCIDENT AND TAXIED TO THE GATE. MAINTENANCE FOUND THE NR 1 ENGINE COWL ANTI-ICE DUCT CRACKED AT BELLOWS. REMOVED AND REPLACED DUCT ASSEMBLY. RAN ENGINE. LEAK CHECK AND OPERATIONAL CHECK GOOD. (M)