As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:C CORROSION FOUND AT LAP JOINT S4L. LFEC INSPECTION CARRIED OUT FROM B S 360 TO BS 440. MATERIAL LOSS INDICATION FROM BS 440 TO BS 411 APPR OX. 20% - 30%. CORRODED INTERNAL DOUBLER ALSO FOUND TO BE DISBONDED. DOUBLER REMOVED IAW SRM 51-30-2. REPAIR CARRIED OUT IAW SMRO EO 2002-044-003, REF. UPS EO B727-5330-1 7405-A.