As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT FUSELAGE SKIN STRUCTURE AT APU EXHAUST UNDER FAIRING 347DF FOUND CORRODED. AFT FUSELAGE SKIN STRUCTURE AT APU EXHAUST UNDER FAIRING 347DF FOUND CORRODED, BS 2161 BETWEEN LONGERONS L33 - L35R. CORROSION REMOVED IAW SRM 51-21-01-0G AND FOUND OUT OF LIMITS IAW SRM 53-70-01-2R REPAIR 3 FIG 20. REPAIRED IAW SRM 53-70-01-2R REPAIR 3 FIG 201. REPAIR CLASSIFIED AS MAJOR IAW GMM 6-2-100.