What was found
ON CLIMBOUT FROM SLC, RECEIVED AN APPARENT AUTOFEATHER ON THE LEFT ENGINE. THE PROP FEATHERED AND TORQUE INDICATED 145 PERCENT. PERFORMED PRECAUTIONARY ENGINE SHUTDOWN. REMOVED AND REPLACED LEFT TSCU, HMU AND EEC. OPS CHECKS GOOD OF ALL SYSTEMS. TSCU P/N: 30005-0000-57, S/N OFF: 855.73-301. HMU P/N OFF: 786390-0, S/N OFF: M80009. EEC P/N OFF: 800414-2-003, S/N OFF: 90049994.