As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- UNABLE TO REDUCE NR 2 PROP RPM BELOW 925 RPM IN CRUISE PORTION OF FLIGHT. RETENSIONED NR 2 CONDITION CONTROL CABLES. PERFORMED ENGINE POWER AND CONDITION CONTROL RIGGING TEST, OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.