What was found
BOS/BTV - FLT 4330 - DURING CRUISE FLIGHT, CREW EXPERIENCED SEVERAL LOUD BANGS FROM LT ENGINE AS ENG LOST POWER. ITT INCREASED TO 975 DEGREES CELSIUS PLUS & RISING AS OTHER PARAMETERS DECREASED. ENG SHUT DOWN & ACFT DIVERTED TO MHT WHERE UNEVENTFUL SINGLE ENG LANDING MADE. TECHNICIANS DISPATCHED & CONFIRMED GAS GENERATOR SEIZED. ENGINE WILL BE REMOVED & REPLACED FOR FURTHER INVESTIGATION. THIS REPORT CLOSES OUT INITIAL EVENT REPORTED 9-11-95. ENG REMOVED FOR IN-FLIGHT FAILURE & DIRECTED TO REPAIR FACILITY TO DETERMINE CAUSE OF SEIZED GAS GENERATOR. DISASSY REVEALED FAILED NR 1 BEARING. BEARING DIRECTED TO ENG MFG'S LAB & FOUND FAILED DUE ROLLING CONTACT FATIGUE ON BALLS & THRUST RING RACEWAY. (X)