What was found
IND - FLT 89 - EN ROUTE PIT-SAN, CREW NOTED AN ODOR AND ALSO HAD A LEFT ENGINE VIBRATION. THE FLIGHT DIVERTED TO IND AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE PERFORMED A BORESCOPE INSPECTION, AND INSPECTED THE INLET COWL, LOW PRESSURE COMPRESSOR BLADES, NOSE COWL FAIRING AND EXHAUST SYSTEM FOR EVIDENCE OF FOD. NO DISCREPANCIES WERE NOTED. THE OIL FILTERS AND MAG CHIP DETECTORS WERE ALSO CHECKED WITH NO DISCREPANCIES NOTED. TROUBLESHOOTING PROCEDURES INDICATED THE REPLACEMENT OF THE BVCU, WHICH WAS ACCOMPLISHED. (M)