As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED MAINTENANCE PYLON TRUSS MOUNT REPLACEMENT, MAINTENANCE CONTRACTOR IDENTIFIED OVERSIZE HOLES IN FIREWALL AT LOCATION TO ATTACH FORWARD ENGINE TRUSS MOUNT ON NR 3 ENGINE PYLON. MAINTENANCE CONTRACTOR REPAIRED OVERSIZE HOLES PER MDC MSC-9591/SFY AND REO 03753. AIRCRAFT RETURNED TO SERVICE. (X)