As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND FRAME 64 RT WAS FOUND WITH TOOLING MARKS BEYOUND SRM LIMITS DURING HEAVY CHECK. THE AIRCRAFT WAS REMOVED FROM SERVICE. MANUFACTURED AND INSTALLED L SHAPED DOUBLER OVER BLENDED AREA IAW EO# EM-53MR-1523. THE AIRCRAFT WAS RETURNED TO SERVICE.