What was found
DURING CRUISE, FIRE WARNING ON NR 3 ENGINE. SECURED NR 3 ENGINE AT 0552Z, DISCHARGED ONE BOTTLE. WINDMILLING OIL PRESSURE 25 PSI, N1 25 PERCENT, N2 40 PERCENT. *S/D* INSPECTION OF THE GENERATOR INDICATES THAT FAILURE OF ONE OR MORE OF THE FOLLOWING COMPONENTS: INPUT DRIVE BEARING, ROTOR WINDING, OR COOLING FAN, DAMAGED THE CSD/GENERATOR UNIT CAUSING OVER SPEED, OVERHEATED CONDITION, LOSS OF OIL, AND RESULTANT FIRE AND FIRE WARNING. ENGINE WAS REPLACED ON AIRCRAFT AND COWLING REPAIRS MADE.