As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION IN FUSELAGE SKIN IN AREA OF LT KEELBEAM (STR 28LT) AND RT KEELBEAM (STR 28RT)AT BS727A-4. CUT OUT FUSELAGE SKIN FOR ACCESS TO LT AND RT KEELBEAMS. REMOVED CORROSION FROM LT AND RT KEELBEAM AREAS WITHIN LIMITS OF SRM 53-60-12 FIG. 101. REPLACED CORRODED SECTION OF FUSELAGE SKIN IAW EA NR 53-275.