What was found
ENG VIB MONITOR R RIGHT ENGINE AIRBORNE VIBRATION MONITORING (AVM) SYSTEM IS INOPERATIVE, OR LOSS OF TACHOMETER DATA. STATUS MSG01- NOT ACTIVE DESCENT INTERMITTENT; 'E' FLANGE ACCELEROMETER (CIRCUIT 1 RIGHT) SIGNAL IS OUT OF RANGE. DB- SIGNAL CONDITIONER UNIT (RIGHT) MSG02- NOT ACTIVE DESCENT INTERMITTENT; 'E' FLANGE ACCELEROMETER (CIRCUIT 1 RIGHT) SIGNAL IS OUT OF RANGE. REPLACED NR 2 ENGINE. SHOP FINDINGS: ENGINE WAS GIVEN A FULL REFURBISHMENT DUE TO POOR PERFORMANCE. LP TURBINE WAS SUSPECT AS CAUSE FOR ON-WING VIBRATION.