As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - ON CLIMBOUT AT ABOUT 3,500FT RECEIVED A NR 1 OIL PRESSURE LIGHT FOLLOWED BY A DROP IN ENGINE TORQUE. SHUTDOWN ENGINE AND ACCOMPLISHED FAILURE CHECKLIST. RETURNED TO THE FIELD AND ACCOMPLISHED A UNEVENTFUL LANDING. MAINTENANCE REPLACED THE NR 1 ENGINE. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. (A)