As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:4C, UPPER AFT NUT PLATE HAS EXFOLIATION CORROSION AROUND IT ON SKIN INSIDE ACCESS 316AB RT SIDE APPROX STA 2160. REPAIRED AFT FUSELAGE UPPER AFT SKIN AT APPROX STA Y=2160 BETWEEN LONGERON 12R AND LONGERON 13R IAW EA 011-5370-01-A7362 REV IR AND EO MD11-533-69255-A. (MAJOR)