As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 5630 - CREW REPORTED SMOKE IN COCKPIT FOLLOWED BY LT ENGINE OIL LIGHT. CREW SHUT DOWN LEFT ENGINE AND RETURNED TO FIELD AT FYV. REMOVED AND REPLACED ENGINE. RECORDS SHOWED ENGINE HAD 54 HOURS SINCE IT CAME OUT OF SHOP FOR REAR HUB REPLACEMENT. GAS GENERATOR HAD 2528 T.S.S.V. TEAR DOWN REPORT STATED NR 1 BEARING HAD FAILED.