As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PROP PSI INDICATIONS PEGGED IN RED. FLUCTUATES WHEN IN FEATHER. OTHER ENGINE INDICATIONS NORMAL. REMOVED AND REPLACED RIGHT PROP OIL PRESSURE SENSOR ON THE PGB IAW SAAB 340B AMM 79-30-05. OPS CHK GOOD. OIL PRESSURE SENSOR. AIRCRAFT RETURNED TO SERVICE.