As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND CORROSION ON THE BOTTOM OF THE LEFT EXIT LOWER FRAME AROUND ALIGNMENT KNOB. THE AIRCRAFT WAS REMOVED FROM SERVICE. BLENDED OUT CORROSION, PERFORMED NDT-NO CRACKS, FABRICATED & INSTALLED INTERNAL "L" DOUBLER FROM AL2024-T3 0.050" THICK IAW AEA EO-EM-52MR-340. THE AIRCRAFT WAS RETURNED TO SERVICE.