What was found
PIT - FLT 127 - EN ROUTE PHL-SAN, WITHT NE NR 2 ENGINE INTEGRATED DRIVE GENERATOR IDG ON MINIMUM EQUIPMENT LIST MEL, THE AUXILIARY POWER UNIT APU, SHUTDOWN DURING FLIGHT. FLIGHT DIVERTED TO PIT AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NR 2 ENGINE IDG AND REMOVED THE MEL. THE APU WAS THEN PLACED ON MEL. THE APU WAS LATER REPLACED DUE TO AN INTERNAL OIL LEAK. THE SHOP REPLACED THE REAR TURBINE BEARING CARBON SEAL. (M)