As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT SCHEDULED ROUTINE MAINTENANCE DISCOVERED ENGINE TRUSS TUBE PN 129-910032-101 CHAFING DAMAGE AT 2.5 INCHES AFT OF FIRE SEAL FLANGE ON IB SIDE. PERFORMED TRUSS REPAIR TO CHAFFED AREA IAW APPROVED DATA CONTAINED IN THE MFG AIRLINER SERIES STRUCTURAL REPAIR MANUAL, CHAPTER 71-91-05.