As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX: BORESCOPE INSPECTION OF THE NR 2 ENGINE S/N FCEFA0174 CIS REVEALED MISSING MATERIAL AT APPROXIMATELY 10 O'CLOCK POSITION REQUIRING ENGINE REMOVAL IAW EO 6-72-136B FIGURE 12 (SHEET 2). MAINTENANCE REMOVED AND REPLACED NR 2 ENGINE PER MTC #6710003 AND 6710004. ALL OPS CHECKS ARE GOOD. LEAK CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.