What was found
ON APPROACH, RT TORQUE GAUGE ERRATIC, DROPPED TO ZERO, TRIGGERED AUTO COARSEN, SHUT DOWN ENGINE AND LANDED UNEVENTFULLY. REMOVED AND REPLACED RT DECU P/N ON 6071T20P18, P/N OFF 6071T20P16 S/N ON LMAT2255, S/N OFF ECDTT1933 AND RT TQ SENSOR P/N ON 0774088T42P01, S/N ON EGNFB857, S/N OFF T1936. OPS CHECK GOOD IAW AMM 76-10-57.