As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BNA - ENGINE S/N P65319C WAS REMVOED FOR OTHER MAINTENANCE. AFTER THE REMOVAL, A CRACK APPROXIMATELY 2 INCHES LONG WAS NOTED AT THE 3:30 POSITION 'AS VIEWED FROM THE REAR' RUNNING HORIZONTALLY ACROSS THE TOP REAR TURBINE BEARING SCAVENGE OIL WELDED MOUNT BOSS, LOCATED ON THE DUCT EXHAUST SHIELD OF THE ENGINE. REFERENCE IPC 72-50-05 PAGE 0 FIG 1. ENGINE WILL BE RETURNED TO GARRETT. INSTALLED QEC UNIT. (M)