As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT TORQUE GAUGE WOULD NOT DROP BELOW 76 PERCENT TORQUE. ALL OTHER GAUGES WERE NORMAL. AFTER ABOUT 5 MINUTES, WHEN WE BEGAN DESCENT, LEFT PROP WENT TO FEATHER. TURNED OFF AUTOFEATHER SYSTEM AND EVERYTHING RETURNED TO NORMAL. DIDN'T SEE LEFT TORQUE EXCEED 104 PERCENT REPLACED RIGHT TORQUE SIGNAL CONDITIONER UNIT. FOUND TORQUE NOT TO EXCEED LIMITS 05-10-00. RAN ENGINES FOUND ENGINE AND AUTO FEATHER TO OPERATE NORMAL. OPS CHECKS SCU IAW MM 71-00-00. OPS CHECKS GOOD.PN ON: 30005-0000-57 SN ON: MM5055 SNOFF: 799