What was found
DURING TAXI, RT POWER LEVER HAD SEVERE VIBRATION. RETURNED TO RAMP. INSPECTED NR 2 ENG & PROP. FOUND 3 PROP BOLTS FRACTURED AND/OR SHEARED. ACFT GROUNDED. PERFORMED ENGINE VIBRATION INSPECTION CHECK IAW MM 5-51-13. NR 2 ENG REDUCTION GEARBOX PROP MOUNTING FLANGE NDT INSPECTED & RUN-OUT INSP COMPLETED. NR 2 ENGINE TUBULAR MOUNT, RUBBER ISO MOUNTS & MOUNT BOLTS INSP. INSTALLED NEW ISO MOUNTS BOLTS IAW MM 71-21-01. INSTALLED NEW NR 2 PROP GOV IAW MM 61-20-00. INSTALLED NR 2 PROP IAW MM 61-10-01. INSTALLED NEW CARBON BLOCK IAW MM 61-21-00. OPS CHECKED & DYNAMIC PROP BALANCE COMPLETED. NR 2 ENG OIL FILTER INSPECTED & PACKINGS REPLACED IAW MM 79-00-00. INSTALLED NEW CAM BOX IAW MM 76-10-00 DUE TO WORN LINKAGE & ENG RIGGED IAW MM 71-00-02. ENG RUNS & OS CHECK COMPLETED, NO DEFECTS NOTED. ACFT RETURNED TO SERVICE.